Why Machines That Bend Are Better
ฝัง
- เผยแพร่เมื่อ 11 มี.ค. 2019
- Compliant mechanisms have lots of advantages over traditional devices. SimpliSafe is awesome security. It's really effective, easy to use, and the price is great. Check out SimpliSafe here: simplisafe.com/veritasium
I visited the Compliant Mechanisms Research group at Brigham Young University and spoke to Professor Larry Howell:
www.compliantmechanisms.byu.edu
At the above link, you can download 3D-print files to make some of the objects in the video, plus learn more about compliant mechanisms.
What I learned about compliant mechanisms I summarize in the 8 P's of compliant mechanisms:
1. Part count (reduced by having flexible parts instead of springs, hinges)
2. Productions processes (many, new, different enabled by compliant designs)
3. Price (reduced by fewer parts and different production processes)
4. Precise Motion (no backlash, less wear, friction)
5. Performance (no outgassing, doesn't require lubricant)
6. Proportions (reduced through different production processes)
7. Portability (lightweight due to simpler, reduced part count designs)
8. Predictability (devices are reliable over a long period of time)
Special thanks to Patreon supporters:
Donal Botkin, James M Nicholson, Michael Krugman, Nathan Hansen, Ron Neal, Stan Presolski, Terrance Shepherd
Animation by Alan Chamberlain
Professor Howell: "Here's my book, it's the most cited book in the field."
He's flexing.
Jesus loves you:)
You mean bending?
>He's flexing.
Get out. Get out with that pun.
here you go take the 400th like
@@zombrz Why are you gay?
1:37 Engineers in their natural habitat: easily startled, and run away at the first sign of danger.
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I work in an R&D lab of a Swiss watchmaking company, and I can tell you that compliant mechanisms are currently by far the hottest topic in research for mechanical watches. For example, they're used in the form of microfabricated oscillatorsmade of Silicon in the Frederique Constant Monolithic and the Zenith Defy Lab.
@@JW-mb6tq yes completely agree, I just revisited this video and mechanical watches came to mind; didn't know that compliant mechanisms were in the map for watchmaking, would be nice to see how.
One question I had while watching the video was : "How does it react to heat variation ?"
I would say this one is especially relevant for mechanical watches applications
Awesome but when am I going to get flexable phone
Flexible parts sound like a nightmare for longevity and accuracy. As a watch dude, you already know the lengths they go to minimize backlash and friction. Ruby bearings and escapement, precision machined everything. I could see flexible parts being used as part of a complication, but never towards the heart of the watch
@@jankington216 The time inside a watch is literally kept by a hairspring, which you've guessed it, is as thin as a hair. This spring has been recently replaced by Zentih using the compliant mechanism etched on a silicon wafer, in their new watch called the Zenith Defy Lab. This breakthrough could actually mean mechanical watches could become more accurate than their quartz counterparts once again, all thanks to the compliant mechanisms
This is amazing. As a mechanical engineering student, we are learning all the ways to prevent bending and shear, whilst you guys are taking advantage of it to make advanced mechanisms.
That's because the headline is not even true. If you are trying to design a CNC router, then bending is to be avoided at almost all cost, otherwise your machine will only do three things: 1) destroy your workpiece, 2) destroy your tools and 3) destroy itself. If you don't understand why, then you still have a lot to learn, "mechanical engineering student". Engineers who are designing bridges and railways and pipelines, however, have learned centuries ago that compliance against thermal stress, etc. is absolutely required to prevent failure. You just don't know what you don't know.
@@lepidoptera9337 I mean just because he compare "preventing bending" to a compliant machines, doesn't mean he is all wrong tho.
@@farrel_ra Most machine tools are made for highly rigid tooling processes. If the tool is allowed to move in the direction in which it "bites", then we get a destructive positive mechanical feedback where the machine gets deflected ever farther into the wrong direction. The way to counteract that is with rigidity and mass.
"Soft" machining can be done, of course and it's highly useful. That's how optical manufacturing processes work, for instance. Grinding and polishing can produce near atomic precision with machines that are all but precise and are completely floppy at the scale of the final precision. I find that absolutely fascinating in its own right.
A stone mason is, if you want, also a "soft manufacturing process". He constantly compares the shape of the stone he has with the shape he wants. The tradeoff is time... soft processes take much longer than a rigid process. So yeah, there are plenty of applications, but one has to chose wisely.
@@lepidoptera9337 I do not have any type of engineering education, but from what I remember in high school physics, is the use of compound material in things like bows for their compactness and good force multiplying. It depends on the use case. I remember we had tent-like structures on our school fields for shade. One was made by hollow steel pipes, one was made by the bamboo and ropes (very common in my country), when a sudden stronm hit. The steel pipe tent did not suffer damage, but was blown away and the joints suffered damage. The bamboo tent swayed a lit bit, but did not collapse. The bamboo itself suffered no noticeable damage. My teacher had a thing about teaching us things after whatever failed after torrential storms (common in my area) and, he loved to point out all the coconut trees still standings, compared to some of the some thick sturdy trees uprooted or damaged.
@@lepidoptera9337 Really? Manufacturing is your only concern with this? You cannot build anything that spins with bending mechanisms. This already rules out anything from Turbines and Pumps up to wheels and power tools. Compliant mechanisms certainly have their place but they won't replace as much as people like to believe.
11:27 "So are these now being used on nuclear weapons?"
"You know, it turns out they don't tell us"
Now I know how to take my resume to the next level.
I’m laughing. I’m laughing as I add a few fascinating lines to my resume.
They don't tell them??!! Hmmm! NASA just pays them millions $ for the patent?
@@SuperBobby1967 I'd suppose that the designs that were kept got some amount of money or whatever else they could give out and then you don't hear from it in any way shape or form until you see them put up an ad or something asking for a new design.
I'm mostly curious of what kind of amount they got for their different designs.
@@SuperBobby1967 nasa isnt the one who ordered the nuke safety thing. they got paid whatever they got paid by the government for simply being one of the candidates who submitted designs, same as everyone else
i dont get it TvT
“Why machines that bend are better”
iPhone 6: right....
I thought thumbnail was a sexy position.
@@stevethea5250 this is a reply
@@falcon5178 🥴🥴🥴🥴🥴🥴🥴🥴
It's ok that you like recycling stuff, but do it with garbage not expired jokes.
@@BrawndoQC Like my garbageman says, 'I'll take your garbage but not your trash'
"What if I stick my finger in it?"
"You'll scream in pain"
"Sounds great let's do it!"
I knew the mechanisms in Mark Rober's new video looked familiar; I guess this is where I saw them.
I saw "the most cited book on compliant mechanisms" and thought... hmmm, this seems familiar, where have i heard this exact phrase before. Now i remember it was from building mini-nerf guns
The thruster control module was probably the coolest thing I've seen all year.
@ludwig amadeus
_mEmEs_
@
Doctor Jones ....that thing is out of this world !
Doctor Jones and I need its name
yeah that module was the only useful application seen in this video
yep, we are seeing the future
That man was such good sport. Very open with how it works. I personally thank him for being on this episode
I loved that even though he knows everything about it, he was still super excited to show it off and still thought it was cool
I'm sure he's buzzing about your thanks buddy!
ThatMCGamer yeah, this was a great video. After you're done watching you might also enjoy this btw th-cam.com/video/LA9ge1KQWqo/w-d-xo.html
@Swapnil Sinha اة
He is a friend of mine and a good man. Great episode!
Always great when you can use Veritasium as a source in essays and stuff. Doing a 1st year eng research essay on the possible application of Compliant mechanisms in landing gear for spacecraft. (due in 3 hours as of writing this[almost done]) It is so nice to be able to watch a video and then understand(at least a vague understanding) of what all the papers I'm reading are actually saying.
Edit: got an extension, now I can expand my conclusion paragraph
hope it went well
Thanks to incredible people such as Professor Howell we as a species can evolve and get better. Science is amazing
That prof looks so humble. All engineering profs should be this cool.
I used to live next door to one of the other professors in that program and he never really talked about what they do there, they just seem to like to move along and do another project.
@@craigpeel5983 I, too, live next to one of his ME colleagues, and he's one of the most humble people I know.
He's a Latter-day Saint (mormon). Of course he's humble. Imagine the world like this.
@@rickmeeker5713 being Mormon absolutely does not make you a humble person. I've lived in SLC, and some of the nastiest, most judgemental people I've ever met were Mormons from there.
@@siciliandefense21 Ahh, true that! Sorry, I didn't mean to imply anything other than HIM. Though I don't know him personally, he seems a decent fellow... better than me. Cheers!
That thruster control for the satellite is a thing of beauty. I'd love to see an animation of how it works!
Go to our website: cmr.byu.edu, click on videos, and scroll down to the space section. Very cool stuff there!
You can see it in work at 8:50 really awesome, two motors, any direction.
ikr, like human joint. there must be a reason why human joint isn't designed like that...
Thanks!
Cool
Amazingly efficient and impressive. The possibilities at the quantum level have suddenly come into perspective. Good video!
You, your team, and all the people that you feature are so very talented. thank you for sharing as always brother
"you would scream in pain "
*puts his finger and then scream *
they don't call him a scientist for nothing bud
they don't call him a scientist at all, they call him a mechanical engineer lol.
@@anom3778 i think it's because he wanted to know *how fast* it'll hurt and not if it will work because obviously if u apply continuous force on anything, you'll eventually get hurt
@@anom3778 sure....hope you're day is nice now :3
Trust and verify
@@anom3778 hope everything is better now
"Why Machines That Bend Are Better"
written by Bender B Rodriguez
Why does this not have more upvotes. I browsed the comments just for this.
@@PyroManiacbwl ik same!!!!🙊
@@PyroManiacbwl idk maybe cause this isnt reddit lmao
“Wheeze” lol
Hey buddy, wanna kill all Humans?(joke)
I really loved the idea of these machines and this type of mechanisms seriously need to be used more...thank you for the enlightenment.
I would have loved him as a professor! If I had the opportunity to switch to compliant mechanisms for my speciality, I definitely would.
"machines that bend are better"
Bender: "shut up baby, i know it."
Bender Bender Bender! Bender Bender Bender!
th-cam.com/video/y6c5ojxYEq4/w-d-xo.html
@@murtileyto Damn I miss that show
@@nobrainsnoheadache2434 I know.
@@nobrainsnoheadache2434 original cast recorded audio episode some time ago. Kind of meh, but better than nothing.
"You can't bend a wooden door!"
"Shhh! You know it and I know it, but this door looks pretty dumb"
As a former student of mechanical engineering I feel like this is the real business.
3D printing is a pretty cool addition to the toolbox but going back and rethinking linkage mechanisms in this way feels way, way more exciting and fruitful to me.
Old comment, yes, but still wanted to mention you should check out the origami engineering video Derek did with this same guy, Larry Howell. Basically, they talk about taking compliant engineering to the next level using the power of folding.
Everything needs to be looked at again
That is what is brilliant with 3d printing. Gives access to engineering and prototyping to the masses. Never been more easy.
Agreed. I think of my days at M-K Engineers (decades ago). This would have changed how we designed things.
im just grade 9 I'm guessing before watching the video that it's simple. LESS FRICTION
This is crazy good. Opens the door for my brain to think of many cool mechanisms that I did not think of before. Really awesome. Thank you so much!
My professor made a lot of components for electrical devices... feeling lucky to be learning with him! Mechanics of Materials
Weird flex but okay
you got me
This is an underrated comment
When you make the joke first but someone 5 days later makes the same joke and gets all the attention.
Das Life
oh man this is gold and so few people even realize it!
This is honestly one of, if not the best video you've made. Was great to learn so much about a topic I didn't even know existed.
couldn't say it better
I tried to say the same but with different words
Well, he never calls them what they are, which are 'living hinges'. Living hinges are unreliable because they fail unpredictably. Could last 10 years, or just a day. Very impractical for high assurance machines.
Indeed, it is the best one.
I agree completely. You totally scored meeting that guy at one of your talks. I want to see literally every compliant system he's ever done lol.
This really calls for much respect for this research group and Professor
I had a complain mechanism class last year during my Bachelor in Microtechnic at EPFL, and I loved it!
_Any machine is flexible if you're just strong enough_
Taikamuna back at it again
Taikamuna back at it again
What if it's a very brittle machine?
@@illusion466 you just stare at it strongly, until it bends to your will.
Not quite. There are fragility and strongness. Some materials can simply break up.
Please, just pause for a moment and reflect on the fact that the phrase "3D-printed titanium" is, in fact, an ACTUAL THING. That is freakin' awesome... what a time to be alive!
Nerd
@Eliphas 『Over Heaven』 lame
@@johnnyespalahento2431 Yes
@@grovermatic cool
ok I want to ask this now....
can we make Damascus titanium like we make Damascus Steel ?
if so, how much would it cost for Damascus titanium Katana sword with Tesla's picture engraved on it ? this does sound like something every Internet Nerd would love.
This guy and his work should be in school books! He is the definition of thinking outside the box.
I was mind blown by the first titanium hinge. My jaw legitimately dropped, and I’ve only done that 3 times before in my 21 years of life.
1:37 ahh the humble engineers in their natural, mostly awkward and camera shy states XD
Best comment I’ve seen this week!!
lmao! good eye.
I didn't even notice them on a first view.
This hit too close to home
oh my god, I feel bashful.
I am stunned by this level of mechanical and dynamical precision.
Same, when it showed the microscopic stuff I genuinely went 😮
Brian Muhia R/iamverysmart
@A en.wikipedia.org/wiki/Dynamical_system
@@demetraeconomou6096 don't be one of those cuckolds dude. Try to talk without memes or reddit.
Person: *says something relevant and appropriate to the subject of the video that does not over exaggerate, doesn't try to make himself look smart, and is not calling anyone dumber for not understanding, simply marveling at this awesome technology"
Dementra: R\iAmStuUpiD
I want to scrutinize this out of enculcated bias so much and yet it's all so brilliant.
Why YT didn't recommended something like this few years before. I am happy to see such mechanism and videos regarding the same.
3:54
"I got a quiz for you"
"Oh-oh"
Natural reaction.
Not natural just the PTSD left over from our time at school.
Elephant
Now he knows how all those people felt that he bamboozled on the beaches and boardwalks so many videos ago.
Yeah that was a "DOH" moment for me to. Why it gotta be in the booty? But really, science guys pump stuff
out to whoever will pay for them to putz around. I want to see more of them intrinsically motivated. God knows
where those parts are going.
"Is that good thinking?"
"It's thinking at least."
Heheh. I like this guy.
T
@@thomasanderson1416 Can u help a little?
I need 12 more subs.
dude so humble and chill but also shaping the future lol
this was nice and educational
FASCINATING! In slow motion some of these components are still deceptively clever. Modeling the 'snap' point of such materials must be complicated, to the point that trying different materials, widths, and angles are no doubt exhaustively checked during prototyping.
Hinges: *bends
Bendy machines: "but can you do this"
Hinges dont bend thats the point mexico they just swing back and forth when i swing i must be bending myself in your logic
Just adding some American to the mix of Asian, Latino and Mexican
I believe that's a Pewdiepie reference if im not mistaken
@@stevecharron7438 IQ 1000
I don't know if there are deleted replies, but some of those replying to this comment are reckless idiots.
This is mind-bending, but luckily, my mind is flexible and compliant.
No pun intended
I wish my wife was...
But he could be a master debator
Just make sure you don't bend your mind more than a couple of hundred times, cuz it will wind up as the Samsung "Fold" phone... not good! ;D
Good one. Lol
In the military we use a lot of carbiners [sic] and S clips and about 2007 they changed from using springs to bendy part to be a piece of steel with offset connection to the solid bit.
Eye-opening, fun, clever as hell and incredibly important.
My new favourite video from you Derek!
Can't wait
God, real engineering is *av*rywhere these days!
please make it, this is about how to reduse usage of material (which is reduse waste too)
Real Engineering, would you please make a video on the topic?
mine too
8 P's
1.) Part Count (Less) 2:42
2.) Production Processes (Various) 3:28
3.) Price (Inexpensive) 3:33
4.) Precise Motion (no backlash) 5:21
5.) Performance (no backlash) 5:38
6.) Proportions (smaller) 7:18
7.) Portable (lightweight, space application) 7:33
8.) Predictability (safing & arming WMDs) 10:17
in case you missed them :)
i was thinking how you were gonna put size in there and in my head instantly thought "Psize"
also Packable, Passive, & Pleasant (clicking)
less parts => it`s harder to fix it if it breaks somehow
@@elpsykongr00 Less parts to replace, you replace the whole unit.
glad I only saw the ad and not the video
This is absolutely amazing!
Thank you for bringing this to our attention!
I truly appreciate your channel an immense amount.
My mind couldn't handle this. I lost it all at the clutch! I can't believe I've never heard of this before!
haha - that's kind of how I felt when I found out about all of this!
@@veritasium I found the clutch to be intresting version of something that I've already seen before: The clutch in a top fuel dragster. The switches were very cool, that they can be made at such microscopic scales!
This is just like when I learned about Soft Robotics all over again, but this has immediate and direct applications everywhere in life!
Not saying that this isn't cool as hell, but does it really bring that much innovation to the centrifugal clutch that scooters and chainsaws already use? It seems it would be lighter for sure and maybe have cheaper (?) manufacturing costs, but other than that I don't think it would benefit them that much. Still a good take on an established technology.
Lighter weight, better reliability, reduced wear, longer component life and cheaper to boot, Rotax have been using them in their Go Kart engine for a while now, made the old style clutch completely obsolete.
When the scientist says 'Even freakier than this' you RE ALLY want to see the NEXT thing
*engineer
@@allahbole gaming*
This is pretty cool, makes sense for some applications. My major concern would be stress and fatigue issues, of which they are obviously aware, and for which they have done some testing.
I also have question about fatigue issues.
Love the use of compliant mechanisms! Great work guys, soon we will 3D print a glass compliant mechanism :O
Practical examples of use of compliant mechanisms in everyday products
1. Every shampoo bottle uses a live hinge made by injection molding - very cheap, durable and assembly free.
2. Computer mouse buttons use flexures (those bendy things you see throughout the video). The microswitch inside it has a diaphragm flexure and the top casing flexes when you press on it to transmit the compressive force. Older mouse models had separate distinguishable buttons, now its all one piece.
3. Cable ties have a very small tooth with a flexure that engages a rack. You can often reuse cable ties by disengaging the tooth from the rack using a pin and pull out the rack while holding tooth off the rack with the pin.
4. All plastic components of every product you use has a snap fit for assembly - no requirement of fasteners.
5. Every book uses live hinges (crease where you bend) for opening and closing.
6. Some cheap click type ball point pen (e.g. Bic retractable pen) uses flexures to keep the extended pen nib in its position.
7. Tic tac box uses living hinge for the lid.
8. Volume rockers on your cell phone uses flexures instead of springs to bounce back
9. If you have a wind up pendulum clock, the pendulum is suspended by a flexure for avoiding friction caused by use of a pivot.
10. Snap fit locks for straps in duffle bags/backpacks etc.
11. Some shot microphone mounts uses flexures for vibration isolation.
12. Camera lens covers uses flexures for springs for holding the cover on the lens.
13. Disposable food containers, clamps for IV lines.
14. Paper clips.
15. Foldable plastic forks found in ready to eat noodles have a living hinge in the middle for folding.
16. Leaf springs in vehicle suspension (Thanks to Heartycoffee in the comments for suggestion).
17. Tweezers and forceps (Thanks to randal gibbons in the comments for suggestion)
18. Safety pins (Thanks to DrBrainSol in the comments for suggestion)
19. Accordion-style toilet plunger (Thanks to Gary Young in the comments for suggestion)
p.s. I will add more to the list later. I love flexures and thank Derek for making a video on compliant mechanisms with Dr.Howell
Haha I was thinking to myself "if compliant designs are so good, why aren't they used everywhere?". Turns out they *are* used everywhere and I'm just unobservant :)
@@skulleeman Yes They are omnipresent. They are most widely used in disposable food containers to single use clamps used in IV lines. Please keep a close eye on everyday objects and you are bound to find them everywhere!
Yes and many are crappy with the flexible hinges easily overstressed thus failing and breaking off.
@@PebblesChan Yes certain consumer products do have badly designed living hinges and I have had similar experience. However, a properly designed living hinge should last thousands of cycles if not more. They would fail prematurely if they are not designed properly, use of wrong type of plastic, if they are bent over their design limit/excessive force, if they are subject to extreme heat, or if they are subject to UV light(sunlight). Please do not get me wrong. I use them all the time. If you design, use them properly they are shown to last at least a million cycle as the Professor in the video claims. Even a 3D printed flexure lasts hundreds of cycles for me when I use them in my lab for my experimental setups. Often times they simplify design with no assembly required. They are indispensable in applications where you cannot use lubricants. for e.g. MEMS, certain medical devices.
Many are not properly designed and having machines cyclically repeating the same action does not emulate real life where there are substantial differences, variances and exposure to idiots. (No one can engineer against stupidity). I have a car window switch that comprises of the simplest possible machine essentially being just a rod of flexible plastic that pushes onto a copper leaf switch. Just with normal use the end shortens being unable to make the copper leaves to make contact. The biggest problem is that the replacement price of that switch is about $250. In the same vehicle there is a plastic combination stalk mechanism (its second) that now fails to invoke the fast wiper speed unless one deliberately over twists the switch and holds it there. The price for that is about $600. The original plastic combination stalk mechanism failed by not being able to invoke high beam. It's amazing that something that costs cents to make can cost so much as replacement parts.
What I find most amazing is how pressed metal sheeting can outperform solid cast metal structural components.
The clutch is actually a centrifugal clutch, exactly like the ones in the chainsaw, but the one in chainsaw have 2 or 3 springs, and those springs break all the time. So these parts would be much more efficient since they’re made out of one piece. Nice!
Those springs means it is easy and cheap to replace. If it's all one piece, you will have to throw it all away for a single failure. Anybody who has used bending plastic hinges knows that absolutely suck. Ask any guy who regularly uses toolboxes. The good stuff has metal hinges.
@@davidgutierrez8297 Good thing that the design isn't actually meant to be used for plastics, but metals, am I right? The plastic shown is only for demonstration purposes.
Centrifugal clutches has inner shoes made out of friction material for reason: steel shoes and steel drum I suspect would have nice sparks flying all over...
@@davidgutierrez8297 1: injection molded plastic toolboxes use different plastics than this and arent stress tested for over a million uses by firms dedicated to compliant mechanisms
2: he literally showed a metal one right after saying "this ones plastic so its just a model"
3: its a single, relatively small, extruded piece of metal, they showed a picture of it installed on a chainsaw and its just smacked on the outside, itd be the cheapest and easiest thing and to replace it you literally replace exactly one piece of metal, instead of buying and replacing multiple components.
@@trustmeiamtroll4198 they never said the centrifugal clutch gets installed with just bare steel as a friction surface
my grandfather worked for Boeing in Seattle as an engineer and was then invited to work at NASA from early 1960's until his retired, he would love this channel!
I agree with similar comments that this topic intrigued me like no other. It is almost like modeling an exoskeleton but in a future modernistic manner. This seems like future tech that is so cool that it has come back in time for us mere mortals to marvel over.
MIT: What degree do you have?
Me: Watched Veritasium.
U got accepted!
@@lol-zi4sv I watched vsauce and veritasium both.
Invigilator : *_sir we've got our new CEO_*
*becomes university director*
@@shaypatrickcormac4670 That's enough to be first astronaut on Mars.
Watched veritaseum and understood everything he says
"What would happen if I put my finger there?"
"You would scream in pain"
"Really?"
Two minutes later, screams in pain😂
2 seconds lol
Hey, anything for science mate.
A true scientist
You're a big guy.
Some people are just so smart.. Thank you for existing and providing your gift to the world
Centrifugal Clutch on my old go cart (driven wheel) had a cylindrical aluminum housing. Driving through the woods one day, caught a branch in the chain sprocket. I surmised turning the wheel in reverse could free it, but more leverage if I could spin the clutch body & sprocket to release the branch. My bare thumb & fore-finger slid off the clutch housing with a sizzle, so fast that it didn’t hurt, but the white char endured for a while (no scar remained), but lesson learned.
To quote JFK
“I like your funny words, magic man”
That’s one of the most famous quotes by him
@PanConManteca 06 "Pokemon Go to the poles!"
JFK-1968
Lol
Clone high was a funny show
k
Neat-O!
13 minutes wasn't long enough.
I still want more.
Large ones would be neat like a door, see-saw, prosthetics...
Im simply baffled - it is elegant, simple and beautiful in function and design and with extreme performance.
This is the coolest thing I’ve seen on TH-cam and my favorite episode.
Narrator : bending machines are better
Apple's ipad 2018 : am I joke to you?
Apple products are always a joke.
saurabh pandey Did Apple patented bend?
iphone 6 still better
I used a chainsaw quite a bit and let me tell you I would've been saved a few headaches if the clutch had been a single compliant mechanism instead of the mess of metal and springs that it is. That is an amazing practical application for this.
joe
Ain't that the truth!!
@@donottrustanyonelol joe
@@oxfordcommaisthegreatest wdym joe
@@donottrustanyonelol JOE MAMA HAHA
the mechanism at 10:44 reminds me of the way a bulova accutron works (analog to a balance spring.).there is a tuning fork which vibrates with 360Hz. this is transformed to a gear with 300 teeth and makes it turn 1,2 times per second as a time base. you can hear the watch humming with that frequency.
Now i watched it 1.5 y later and its still amazing, and a very proper done Video!
A video about 3D printable nanomachines is, somehow, focused on nuclear weapons and sponsored by home security. It's both exciting and very terrifying.
Icenri Nanomachines?
With our 12 megaton home security system, burglars will never target your home again
There's always a conspiracy.
Illuminati confirmed √
I'd say the nuclear weapons are the hook more so than the focus
4:38
"Is that a good thinking?"
"Well, it's a thinking, at least."
R.I.P
-a-
thonks
I have no idea what professors are like at other schools, but I couldn't help but think when he said that, "such a typical BYU professor thing to say..." :D.
Sounds like me at school
this pair of toungs is so cool, in its most compressed state it has a theoretical infinite force ratio, so it increases preassure and decreases motion the more compressed it is
I love the way they were peeking in the room.
1:55 -"Would you like to try?"
-"I would actually like to feel the force.."
*prof Larry smirks in Darth Vaderish*
en.wikipedia.org/wiki/Force
i messed up. I sent this to my engineering professor and now he made everyone watch this and answer questions on it.
F
What were the questions?
F
@@anom3778 Is this an elephant?
In 1968 I did research to try to put a machine, a molecular beam, on a glass slide, that could then be rotated to get three way velocity specification. The microchip etching needed had not yet been invented (I tried to use asphalt and HF). But there were mechanical components too. These kind of etchable devices could serve for controls. So far as I know, the device has never been made or researched. Maybe it's time to try again using these advanced mechanisms.
That clutch design would be really helpful in nitro RCs.
"-What if you put your finger in there and squeeze it?
-You would scream in pain."
_screams in pain_
I was thinking the whole time how I'd like to 3D print some of this stuff and then he's like "here you can print these and PLA". Awesome.
@rollout the battle rapper www.thingiverse.com/thing:3163115 you're welcome xD
Abbreviated Reviews me too!
@rollout the battle rapper , I wondered if that was what you meant. ( comment and address below by xyz ), I also thought this is pretty unselfish to share knowledge which in turn we also would share
@rollout the battle rapper , I thought that was what you meant ( comment by Johan E.g. ) and I am not surprised that this Man is sharing information with others, to HELP the world bend " together.
This is incredibly cool, and ALSO what a nice and charming guy Professor Howell is!
That could be great in aerospace. Imagine a wing with adaptive flaps that just give you more lift at lower speed through movement by the speed itself.
Dr. Howell is an amazing Professor and a great guy. I was lucky enough to take his compliant mechanisms class. I'd highly recommend reading his book and learning about how to design compliant mechanisms using pseudo-rigid-body models. That's when your mind will really be blown! To think that we can take complex mechanical systems and make them compliant using a simple formula is what is really quite amazing. Great video!
Complaint mechanisms sounds more like a government employee training program (yes I know it was a typo, but this is the internet, one does not simply walk by an interesting typo).
@@1urie1 lol
@Ryan I spent years in schooling and most of that time, I was self taught and extremely inventive getting around the stupidity of so-called teachers. However, a rare handful in my 28 yrs of formal education I met educators such as this man. They were inspiring and could clearly explain their subject(s). I am truly happy for you that you too have had the pleasure of experiencing learning from someone who enjoys investigating, discovering, inventing, creating and learning and then sharing all of this with others.
F.A.C.T. is where it's at
I wish you asked the guy more interesting questions. Like whether heat generated by the action is greater than in traditional mechanical hinges (which is super important), or how "a million cycles" compares with industry standards.
Because the important thing is to compare, not to just say "uuugh, it's possible!".
Good comment
And on a switch for example (especially with plastic) doing tests consecutively is going to warm up the plastic and actually make it significantly easier on the product being switched. How many flips would it last under normal circumstances?
super great usage options for low price. The problem arises when repairing and replacing, where the existing element of such a device cannot be used, even with the repair there would be a difference in performance. And different materials have different temperature properties.
Larry is like literally a clone of my uncle and my grandfather. All engineers, same gestures same glasses the same clothes same hair
Everyone: Flexible Thingy
Me, an intellectual: _Compliant Mechanism_
And everyone on the bus started clapping👏.
@@rubiks15 It's a meme format...
@@rubiks15 whoooshy
Everyone: Good meme!
@rubiks15, an intellectual: _a bit pretentious_
FLEX TAPE
Before I retired in 2009, I was talking with an associate in our testing lab that had worked on the safety and arming mechanisms on a particular nuke, in the conversation I asked about the high order of electronics that must be in those devices, to the contrary he said very simple mechanics and simple electric devices are used to keep reliability high.
Great episode! Glad it showed up in my feed again
Just a transmissions valve body applies pressure to incoming fluid forces, by redirecting it through chambers. Redirecting pressures across the y-axis allows micro adjustments for the forward motion
Larry was my Masters Thesis advisor--he is one of the great people I have known in my life. Compliant mechanisms are very cool. Thank you for posting this video-love your channel. For any who have not seen it, you should check out the Nova episode "The Origami Revolution"--which covers more BYU Compliant Mechanisms research--with origami.
Once these are self repairing (somehow) we basically simulate biological machinery
Thanks for the rec. will check it out
@Nathan Masters
, very curious, do you guys take inspiration from biological mechanisms (i.e biomimicry)? Seems like there would be plenty of those in nature.
Thanks for the lead
Im sure it has been said...but that Titanium literally blew my mind!!!!!!!!! That was just amazing to watch in action!!
I'm _really_ hoping you didn't literally mean literally...
@@Jognt His mind literally blew up. It was his pet dog who posted what happened.
@@Jognt He meant an air blow, also known as brain fart.
Oh no.....it is blown.....tons of tiny intellectual bits are now floating around incoherently bumping around my room never to return to their natural state.
Amazing video! I love the innovations insanely smart people come up with!!
Love seeing advancements in technology and the human mind evolving
Everyone: You need lots of parts and screws and such to make a machine work and make it stable!
These people: *b e n d*
Haha thing goes bend.
@@Threat5STAR Michael no!
😂😂😂
I have no idea what these are but I want them. Lol
3:55 "I got a quiz for you"
- "ELEPHANT"
Well, that qualifies Veritasium as president of the united states :D
"About a month ago I was giving a talk in Utah, hence the suit."
First thing learned, you need a suit in Utah
Cause of mormons
Yeah, cos EVERYONE in Utah MUST wear a suit. Haha. He was probably asked to wear it because he was at BYU, owned by the Church of Jesus Christ of Latter-day Saints, he was asked to adhere to a dress code. None of the students would've been in suits. It's a professional courtesy, imo.
He got away easy as they didn't require him to lose the beard. For an employees not shaving and having long hair is a no-no, maybe other rules apply for visitors.
Yes in texas to bc we r to down 2 earth
Suitah
As a EE in an electro mechanical design group for printers I worked closely with 2 lead MEs. One advocated for traditional rigid structures while the other wanted a compliant design.
In this particular case the compliant design had more parts and complexity. Ultimately the compliant design won out. In conjunction with servo control, acceleration and deacceleration could be tuned resulting in greater positioning accuracy, higher reliability, less noise, less vibration. Overall impact on cost turned out to be minimal.
Hi @veritasium
I was trying to think of a way to implement the thruster mechanism shown at 8:33 to use it for the mirror pointing of a telescope. An interesting question that I have is how this mechanism is able to operate in space when titanium becomes very brittle at those temperatures.
I feel that there may be some improvised alloys used, cause afaik titanium goes extremely brittle at -196C , and this was just a prototype to see if titanium would be a good fit. Just an assumption tho…
Puts pipe in duct tape hole.
The algorithm: demonetized
It looks like robots doing the do
Is the TH-cam monetization algorithm really this problematic?
@@JamieTransNyc It's even worse
@@JamieTransNyc much worse
I got hard
"Why machines that bend are better"
-Things you can't say to your wife
You are pretty late here bruh
I see you absolutely everywhere that’s sus
@@animeshsah5843 you name wont fool me you fool 6 hours ago is exactly when you commented
Robophilia time
"I don't have a wife"
-You, probably.
There is a plans-built experimental aircraft design (from Zenith Aircraft) that uses (in my interpretation) a compliant mechanism for the ailerons. I replaces the hinges of the aileron with a bending piece of sheet metal.
That was not long enough!!! Holy cow!! So many possibilities!