HEY WANNA TEST CRUSHING THINGS WITH HYDRAULIC PRESS YOURSELF? TRY OUT OUR NEW MOBILE GAME! We have just launched sequel for our hugely popular Hydraulic Press Pocket, Pocket Press. On new game you can ofcourse crush many different things with press and also upgrade and repair your press and do many other press related things! and game is FREE TO PLAY! Here are the download links: Android: play.google.com/store/apps/details?id=fi.LinnamaEntertainment.hydraulicpress2 IOS: apps.apple.com/us/app/pocket-press/id1513743178
@@legoose6196 Glad to hear that you like it! My favorite was the previous Destruction Tuber Simulator :D I used way too much time playing that even when it was basically simulator of my job :D
Hydraulic Press Channel good idea! Show the people how it works live. You could even use Bluestacks which is a free Android OS simulator for PCs where you could download the game and stream playing it for a couple of minutes.
This is why I never drive across a bridge that has a hydraulic press above it. I also avoid a bridge if it has a troll under it, aliens near it, zombies on it, or a toll booth approaching it.
But Trusses aren't built with sheets of metal, they're built with I-beams, and it's that I-beam cross structure that makes them strong. If you want to test your press, put some lengthwise members to prevent the truss structure from folding.
no. Thats incorrect. The only thing the I-beam does is remove less effective material from the beam, it actually makes it weaker. But much lighter and more efficient
Truss bridges also have diagonal members running between the two sides. You can see why they do in these videos: many of your bridges failed by “folding” in a zigzag pattern; the diagonal bracing would add stiffness to resist that.
@@t_c5266 *The only thing the I-beam does is remove less effective material from the beam, it actually makes it weaker. But much lighter and more efficient* Try bending a sheet of metal in half by creasing along the surface. Easy right? Now try bending a sheet of metal by creasing only on the edge. Near impossible. Physics matters. I-beams do not add strength by reducing weight, they add strength by providing two cross-directions that won't bend as easily as on the major surface.
@@HydraulicPressChannel It still seems unrealistic. Shouldn't both ends of the "road" be fastened to the supporting fixture? Real bridges don't just lie loose on their pylons.
g.co/kgs/Gcx8WS The statement that it has not flown untethered is somewhat misleading. Moller was forbidden by his insurance co. from free flight. The tether was slack im one flight that I know of. There may still be mechanical issues (I don't think so) but the *big* problems are regulatory with the FAA.
Anybody can get a cheap welder and tubing bender and old motorcycle from the junkyard and make a light-sport aircraft, and fly it after 15 hours getting a recreational license. The problem is it's a real pain in the butt to land anywhere legally besides my own yard or an airport. Get caught landing at the McDonald's and that's probably like 65 different felonies
@@EdwinWiles I've studied the Moller projects for _decades._ His speed, range, and specific fuel consumption figures for the aircraft and the "Rota-Power" engines are all unrealistic. The whole mess has gone nowhere, and will go nowhere. I did use his exhaust systems on my motorcycle back in the day! www.moller.com
@@alakani Actually, that's not so. None of what you've said is really "so"; very few can buy some raw parts and make a flyable aircraft, for one. For two, _Sport Pilot_ is the ticket that most will get, and getting one in 15 hours would be rare. And then you'd have _zero_ time in your ersatz experimental flying machine, which has more-than-once lead to disaster. But once flying (and with your 40 hours of test time flown off) there are many places you can land. Google "trent palmer".
All samples here failed due to buckling walls except the two that failed at deck ends, trusses that simply go straight across won't help much with that. In real bridges, they are meshed so each member can contribute to stiffness along multiple axes and would be difficult to do on such a small scale. Next best thing would be to weld some perpendicular pieces to walls to help keep them straight like proper trusses would.
The civil engineer in me was like “I agree, high performance concrete does make the world a better place”, then I realized you meant the channel name and I had a good laugh at myself 😂
You should really list all the bridges and the weight/strength ratios at the end, it’s a bit hard to tell which design was the best / worst without that 😬
Maybe do a competition limiting weight to a certain number, and have the person submitting the design indicate exactly where all the supports, welds, etc should go. Or better yet, have the submissions be complete pieces that are created by the submitter, so you don't have to guess about where to put anything. It would be nice to see what people send you with limits in place.
It's very interesting to see how the assorted designs hold up. This is some great material science and I look forward to seeing more. I guess at least one design was a PhD thesis
Triangular lateral bracing on top/bottom would be more effective when you have the slender compression members. Also keep in mind any members in compression will buckle with the flat plates you use, so the thickness is very limiting to begin with. Keep short “unbraced lengths”. Bearing area is also important, it looks like the ends shear off. You could double up plates at the ends to prevent that.
What i have noticed is that the side metal is a very thin actual aluminum alloy. Replace that with a quarter to a half inch thick straight steel or metal and those bridges will take a massive amount of pressure to cook
Been watching your channel for a couple years now and I have loved the ways things turn out! You should auction them off and donate the money to a charity you/they (purchaser) like
I wonder if there is a chance that you could get ahold of one or more of the recalled Harbor Freight jack stands. It's not exactly related to the failure mode they were recalled for, but it would be cool to see what pressure they will actually fail at.
I really love these tests!👍 Maybe try doubling up the steel that is along the arches and thin out the supports. Same overall bridge weight but will improve load bearing strength.
All of these are buckling along the end diagonals and the top chord. Notice that the winners are beefy across the top; the bottom doesn't matter so much, and in fact, struts along the bottom don't do anything at all except add weight. The best design is going to have a wide and thick member all the way from the support, angling up, across the top and angling back down to the other support. You don't need a lot of steel below the road; just enough so it doesn't pull apart like the second one did at 2:42. The one at 5:36 shows the most promise; if some of that excess steel below the road were moved up to the area above the support where it gets thin, and the struts were moved up there, too, it would do better. Better yet would be to replace the struts with long plates bent to follow the curve of the top and welded along the edge so it's more like a box.
I saw a video by Thomas Sanladerer about topography optimisation. It would be interesting to see a design using that technique to see how well it does under the press.
Most of the bridges failed, because of the sharp corner that was left after cutting. Metal tends to break at sharp corners, thats why metal structures have round cornered holes and machinists round up edges. I think some results could have been a little better.
a few design seem to fail at the joint between the I-beam stands and the bridge sheet metal. Perhaps putting a curve or circle punch out at the sharp corner to remove the stress concentration can increase the load-before-failure even more :)
Lauri, you should take the weakest design from the first set and rut it again with the cross-braces added. Then you can see how many you need to add before it makes a difference
You should weld the ends of the bridges to the support beams, it seems they all fail from lifting off the beams, a real bridge isn’t just resting on risers, they are attached. That’s pretty good.
You need joints so that the load is spread across the joints of the truss rather than the "members". With your side pieces being one solid piece it means that the entire side is acting as a single member which has stress concentrators at the points where you cut the holes
Instead of a circle, use two halves with the top of the arc point up. The bottom half with will push the load towards the edges instead of down. Also helps if the arcs have have some structure that is perpendicular. In the test you can see that the sides bend inward or outward losing most of its strength. Since they are flat its much easier for it to bend and lose strength.
"I think it's gonna be around 3 tons. My wife thinks only 2.5 tons, so she doesn't trust my support work" Bridge gets only 1.9 "This bridge must not have been a super strong design. Ooookay onto the next one" Quickly tries to get to the next one to keep his pride in tact
The bridge base needs to be two layers rather than a flat “road”, and a gap between them, and internal triangular and vertical struts inside the gap, kind of like corrugated cardboard.
A question about the math: Shouldn't scale come into play? Let's say the bridge is 1/100th scale, for a round number. Shouldn't whatever tonnage the press puts onto the bridge be multiplied at least with that in mind? say- 2000 lbs, x 100 (the 1:100th scale)? Which means that bridge would withstand... a LOT. 200,000 tons. Of force.
Olisi kiva nähdä vielä versiona jossa nuo "tukikaaret" menisi pidemmälle sivutukien yli ja olisi hitsattu tiehen sieltäkin. Nyt näyttää että helposti lähtee sieltä kaareutumaan/muuttamaan muotoaan..
You do not need more connections. You either need solid strip covering the top and bottom or you need thicker steel. That's the only way you are going to truly test the structure with these being so small
Most of these aren't designed to put the steel in tension, which is where it's best. The bottom part of the bridges is the most important, for most of his designs.
I think the force is too concentrated in the center. Bridges usually have a load across the whole length, not just dead center. Maybe add a long/wide end to the press tool to apply load across the whole length?
Next time put a thermal camera on these... that way we can see what parts are heating up and plasticizing and can help you design a better bridge by shoring up those weaker areas. Because what this is showing, even on such a small sample, that not all parts of the steel are homogenous blends of carbon and iron. This is why engineers spend a lot of time trying to pick out the best blends of steel that contain chromium, nickel, molybdenum etc... for critical areas that need certain strength or elastic characteristics, and where to save money by using just plain ol' "Black Iron" in the less critical areas.
Just as in the 3rd volume of "Which is the strongest bridge design?" the simplest and the most heavy solution was the most effective at mass to durability conversion.
Hey where you buy lasercuts? Do you have to send your own metal sheets in or are those included? Could you add one screen result list to end of video: photos of bridges with results?
This is veery impressive and interesting to watch. Because we would know how much should the bridge hold (if it would be all steel.) For example, the first bridge was starting to break somewhere at 1400 kg. So if we will build 100x bigger bridge made out of all steel, it would hold safely around 1200 tons. (1200kg x 100 means 100 times bigger bridge whitch can hold 1200 tons.) Haha. Thats very easy mathematics, i know. But its interesting to think about it xD
I remember back at the beginning of the channel you kept talking about upgrading to a more powerful press, 100 ton or 1000 ton or something like that. Did that ever happen?
I know other countries have different systems that are superior in some ways, but do any other people in the US feel briefly awkward when seeing commas used as decimals, as I do? Great content as always !
With these bridges being sheet steel, the most important part is the underside support in tension as the top cannot support the compression loads. Need a design with large end supports and a large underside inverted arch for tension loading. The top support still needs to exist but should not be the primary load bearing side.
Triangles. Statically the most stable, and load bearing shape you can get. Build a bridge that has nothing, but triangles, and the sides' axis of the triangles must coincide in every junction, otherwise you are introducing torque forces, instead of pure push-pull forces. Focus on parallelism, and to avoid unnecessary torque/force junctures.
Hi I'm the designer of the first and second last bridge. Both of those were designed with shape optimazation, and I'm gladly suprised the performed excactly as I estimaited. The shape was optimized for 1 ton load so I was suprised that some designs got over 3 tons. I know HPC has still one of my designs which I don't have high hopes for (estimated 1ton and heavier than the second last). I know I could do better but too bad they don't take more entries. I'm little "pantsdrunk" while writing this, so I'm sorry if this is confusing but in the nutshell: Thanks I was involved, too bad I wasn't the best. Santtu, Finn who just started studying construction engineering.
Tension bridges like 7:00 are super strong, but without a tether to the sides it doesn't work at all. You could even make it with wire, but you HAVE to make the sides of the bridge fixed. As it is now they will just move about, unlike real bridges.
Perhaps the sheet itself has cavities and when pressed they crack. And try to make a triangular construction at the top it will last longer. Next question will it last longer if the poles are twisted?
I think the problem isn't the design, but rather how you use the material. All those supports are not doing well because they're so thin and just bend to the sides, thus loosing most of their initial strength.
HEY WANNA TEST CRUSHING THINGS WITH HYDRAULIC PRESS YOURSELF? TRY OUT OUR NEW MOBILE GAME!
We have just launched sequel for our hugely popular Hydraulic Press Pocket, Pocket Press. On new game you can ofcourse crush many different things with press and also upgrade and repair your press and do many other press related things! and game is FREE TO PLAY! Here are the download links:
Android: play.google.com/store/apps/details?id=fi.LinnamaEntertainment.hydraulicpress2
IOS: apps.apple.com/us/app/pocket-press/id1513743178
I downloaded it this morning and have been playing it for the last few hours!
@@bubbajenkins123 I have been too busy to play much the finished version myself but I think I am going to try on tomorrow's stream at latest :D
@@legoose6196 Glad to hear that you like it! My favorite was the previous Destruction Tuber Simulator :D I used way too much time playing that even when it was basically simulator of my job :D
Hydraulic Press Channel good idea! Show the people how it works live. You could even use Bluestacks which is a free Android OS simulator for PCs where you could download the game and stream playing it for a couple of minutes.
Nerf or nothing
This is why I never drive across a bridge that has a hydraulic press above it. I also avoid a bridge if it has a troll under it, aliens near it, zombies on it, or a toll booth approaching it.
What if the tool booth already crossed and is going away from the bridge?
Don't forget about Godzilla and Magneto
how do you ever get anywhere?
@@timothyball3144 good i'm glad that wasn't just me tripping out and reading it like that lol
You are a very wise man
I love these bridge competitions. I would like to see a text overlay with the results at the end though.
Yes give us spreadsheets!
Anni's play-doo creations are getting remarkably detailed!
But Trusses aren't built with sheets of metal, they're built with I-beams, and it's that I-beam cross structure that makes them strong. If you want to test your press, put some lengthwise members to prevent the truss structure from folding.
I will laser cut better designs for next video. those small axles were the smallest parts that I had :D
no. Thats incorrect. The only thing the I-beam does is remove less effective material from the beam, it actually makes it weaker. But much lighter and more efficient
Truss bridges also have diagonal members running between the two sides. You can see why they do in these videos: many of your bridges failed by “folding” in a zigzag pattern; the diagonal bracing would add stiffness to resist that.
@@t_c5266
*The only thing the I-beam does is remove less effective material from the beam, it actually makes it weaker. But much lighter and more efficient*
Try bending a sheet of metal in half by creasing along the surface.
Easy right?
Now try bending a sheet of metal by creasing only on the edge.
Near impossible.
Physics matters. I-beams do not add strength by reducing weight, they add strength by providing two cross-directions that won't bend as easily as on the major surface.
@@HydraulicPressChannel It still seems unrealistic. Shouldn't both ends of the "road" be fastened to the supporting fixture? Real bridges don't just lie loose on their pylons.
I'm glad that my design did so well although I feel like I cheated just basically submitting a solid sheet of metal.
It should had been longer solid sheet :)
The solid sheet was great to compare against.
Did you know it would be stronger with more solid steel before you sent it in.
looks like the key is to place the steel in tension instead of compression
1990’s: “I bet cars will fly in the future.”
2020: Watches things get crushed on the internet.
IN 4k!
g.co/kgs/Gcx8WS
The statement that it has not flown untethered is somewhat misleading. Moller was forbidden by his insurance co. from free flight. The tether was slack im one flight that I know of.
There may still be mechanical issues (I don't think so) but the *big* problems are regulatory with the FAA.
Anybody can get a cheap welder and tubing bender and old motorcycle from the junkyard and make a light-sport aircraft, and fly it after 15 hours getting a recreational license. The problem is it's a real pain in the butt to land anywhere legally besides my own yard or an airport. Get caught landing at the McDonald's and that's probably like 65 different felonies
@@EdwinWiles I've studied the Moller projects for _decades._ His speed, range, and specific fuel consumption figures for the aircraft and the "Rota-Power" engines are all unrealistic. The whole mess has gone nowhere, and will go nowhere. I did use his exhaust systems on my motorcycle back in the day! www.moller.com
@@alakani Actually, that's not so. None of what you've said is really "so"; very few can buy some raw parts and make a flyable aircraft, for one. For two, _Sport Pilot_ is the ticket that most will get, and getting one in 15 hours would be rare. And then you'd have _zero_ time in your ersatz experimental flying machine, which has more-than-once lead to disaster. But once flying (and with your 40 hours of test time flown off) there are many places you can land. Google "trent palmer".
5:31 The bridge already knows what's gonna happen to it
9:21 "It's the most important meal of the day, and if you don't eat it you are gonna die. So we have to destroy your meal."
Truss bridges like these need a lot more connections than you have given them.
The lightest bridge also broke at the tiny end support, would have worked much better if only that point was thicker.
Or if the "street" was welded to the side at the sides.
Yeah the top support box's start skewing almost immediately. Better supports would include triangular cross braces to keep them parallel.
All samples here failed due to buckling walls except the two that failed at deck ends, trusses that simply go straight across won't help much with that. In real bridges, they are meshed so each member can contribute to stiffness along multiple axes and would be difficult to do on such a small scale. Next best thing would be to weld some perpendicular pieces to walls to help keep them straight like proper trusses would.
@@teardowndan5364 Should have just got 3 of the base pieces and welded up an i beam.
This is a great video, it really holds my 10 minute attention “span”.
The world is just a better place for HPC being in it.
The civil engineer in me was like “I agree, high performance concrete does make the world a better place”, then I realized you meant the channel name and I had a good laugh at myself 😂
The way they break gives really good insight to the forces in action. I would suggest placing the supports as close to the center as possible
Who would have thought all those years ago that in 2020 you would have 2.6 million subscribers... Well done you folks!!! 👏👏👍
I truss that this will be the best video yet!
You will be hard pressed to find a better comment.
Really crushed it with that comment.
it really bridges the gap to sucessful youtube content
lol 😂😂😂😂😂😂😂😂😂😂😂😂
Moi Bubba. I truss we won't have to read too many more punny comments. :)
Need to weld the entire “road” to the bridge
Yes plus it should have a center cross member in center on all, but that is where hers putting the press
What I'm supposed to be doing at 3 am: sleeping
What I'm actually doing: watching mario hydraulic press miniature steel bridges
Skeletons sleep!?
@@jakethesnake6783 well yeah i slept at the end of a battle remember?
The bridges and 3d print competitions are really cool!
Anni has become so good at her clay creations! She should have an art exhibit. "Press Art" maybe.
Looks like the material you're using is way stronger in tension than compression. Would love to see a part 3!
This is absolutely awesome that you are trying this again with improvements :D Thanks for the video!
I think your point of pressure is too small.. You should expand the pressure point along the bridge more to simulate a mostly full capacity bridge
These never get old....there is something about crushing stuff with a press 😉
You should really list all the bridges and the weight/strength ratios at the end, it’s a bit hard to tell which design was the best / worst without that 😬
Maybe do a competition limiting weight to a certain number, and have the person submitting the design indicate exactly where all the supports, welds, etc should go.
Or better yet, have the submissions be complete pieces that are created by the submitter, so you don't have to guess about where to put anything.
It would be nice to see what people send you with limits in place.
It's very interesting to see how the assorted designs hold up. This is some great material science and I look forward to seeing more.
I guess at least one design was a PhD thesis
Triangular lateral bracing on top/bottom would be more effective when you have the slender compression members. Also keep in mind any members in compression will buckle with the flat plates you use, so the thickness is very limiting to begin with. Keep short “unbraced lengths”.
Bearing area is also important, it looks like the ends shear off. You could double up plates at the ends to prevent that.
Downloaded! The first two were also very cool 😎
What i have noticed is that the side metal is a very thin actual aluminum alloy. Replace that with a quarter to a half inch thick straight steel or metal and those bridges will take a massive amount of pressure to cook
Been watching your channel for a couple years now and I have loved the ways things turn out! You should auction them off and donate the money to a charity you/they (purchaser) like
We need Lauri and Anni action figures. And bobble head dolls.
5:56 when you are playing PubG and your mom asks you to go to the market 🤣🤣
Me playing Polybridge 2:
WRITE THAT DOWN! WRITE THAT DOWN!
I wonder if there is a chance that you could get ahold of one or more of the recalled Harbor Freight jack stands. It's not exactly related to the failure mode they were recalled for, but it would be cool to see what pressure they will actually fail at.
I really love these tests!👍 Maybe try doubling up the steel that is along the arches and thin out the supports. Same overall bridge weight but will improve load bearing strength.
All of these are buckling along the end diagonals and the top chord. Notice that the winners are beefy across the top; the bottom doesn't matter so much, and in fact, struts along the bottom don't do anything at all except add weight. The best design is going to have a wide and thick member all the way from the support, angling up, across the top and angling back down to the other support. You don't need a lot of steel below the road; just enough so it doesn't pull apart like the second one did at 2:42. The one at 5:36 shows the most promise; if some of that excess steel below the road were moved up to the area above the support where it gets thin, and the struts were moved up there, too, it would do better. Better yet would be to replace the struts with long plates bent to follow the curve of the top and welded along the edge so it's more like a box.
I saw a video by Thomas Sanladerer about topography optimisation. It would be interesting to see a design using that technique to see how well it does under the press.
You should do a contest were people can send you theire bridge design to see who can build the strongest bridge
Those are all send-in designs as far as I know...
I sent mine but you're late as they don't take any new designs in
Can you run a competition with topological optimized designs?
Most of the bridges failed, because of the sharp corner that was left after cutting. Metal tends to break at sharp corners, thats why metal structures have round cornered holes and machinists round up edges. I think some results could have been a little better.
a few design seem to fail at the joint between the I-beam stands and the bridge sheet metal. Perhaps putting a curve or circle punch out at the sharp corner to remove the stress concentration can increase the load-before-failure even more :)
Are you gonna do another design contest? I'd like to design some
@jon doe bruh
Now double the sheet thickness. My estimate is that the bridges will perform at some 280%
Lauri, you should take the weakest design from the first set and rut it again with the cross-braces added. Then you can see how many you need to add before it makes a difference
Yay I've been waiting for another bridge video
The tiny bit holding the edge fails on the side with the most air between the wall and bridge
SMILES are the strongest bridges. Between people, and between nations.😀😁😃😄☺️😊😇
But you shouldn't put your smile under a Hydraulic Press. :}
Awesome job, I like these test!!
These videos are awesome, please continue to make challenge videos like this.
You should weld the ends of the bridges to the support beams, it seems they all fail from lifting off the beams, a real bridge isn’t just resting on risers, they are attached. That’s pretty good.
You need joints so that the load is spread across the joints of the truss rather than the "members". With your side pieces being one solid piece it means that the entire side is acting as a single member which has stress concentrators at the points where you cut the holes
*Did you hear about the fire in the shoe factory?*
Many soles were lost.
Wow! He really does listen to us. Hyvin tehty! 👍
I think the gap is causing huge issues to the bridges.Maybe you should add a shim for a tight fit?
You guys are the best 👌
Maybe tack the ends of the bridge to the supports because unsupported ends creates an artificial weakness.
Instead of a circle, use two halves with the top of the arc point up. The bottom half with will push the load towards the edges instead of down. Also helps if the arcs have have some structure that is perpendicular. In the test you can see that the sides bend inward or outward losing most of its strength. Since they are flat its much easier for it to bend and lose strength.
"I think it's gonna be around 3 tons. My wife thinks only 2.5 tons, so she doesn't trust my support work"
Bridge gets only 1.9
"This bridge must not have been a super strong design. Ooookay onto the next one"
Quickly tries to get to the next one to keep his pride in tact
The bridge base needs to be two layers rather than a flat “road”, and a gap between them, and internal triangular and vertical struts inside the gap, kind of like corrugated cardboard.
A question about the math:
Shouldn't scale come into play? Let's say the bridge is 1/100th scale, for a round number. Shouldn't whatever tonnage the press puts onto the bridge be multiplied at least with that in mind? say- 2000 lbs, x 100 (the 1:100th scale)? Which means that bridge would withstand... a LOT. 200,000 tons. Of force.
I really like the bridge videos :)
Now try some tensegrity designs! It would be great to see how a tension elements (steel wires) hold up under pressure.
Olisi kiva nähdä vielä versiona jossa nuo "tukikaaret" menisi pidemmälle sivutukien yli ja olisi hitsattu tiehen sieltäkin. Nyt näyttää että helposti lähtee sieltä kaareutumaan/muuttamaan muotoaan..
Have you tried crushing a masonry chisel vertically or a log splitter or some sledge hammer heads or a fencing maul or some brass valves?
You do not need more connections. You either need solid strip covering the top and bottom or you need thicker steel. That's the only way you are going to truly test the structure with these being so small
Unfortunately I didn't see my entry. anyways, good content. More power to HPC!
We have a lot of these still to come. I am just ordering more from laser cutting company so yours might still coming
@@HydraulicPressChannel thank you! I want to see how my design will stand duting pressing.
Most of these aren't designed to put the steel in tension, which is where it's best. The bottom part of the bridges is the most important, for most of his designs.
As a KSP player I could have told everybody that struts are the most important thing about any design!
What a fun job to crush stuff but its also very interesting 🤔
Great upgrade, thank you :)
Kiitos! That was interesting to see 😎👍
I think the force is too concentrated in the center. Bridges usually have a load across the whole length, not just dead center. Maybe add a long/wide end to the press tool to apply load across the whole length?
Next time put a thermal camera on these... that way we can see what parts are heating up and plasticizing and can help you design a better bridge by shoring up those weaker areas. Because what this is showing, even on such a small sample, that not all parts of the steel are homogenous blends of carbon and iron. This is why engineers spend a lot of time trying to pick out the best blends of steel that contain chromium, nickel, molybdenum etc... for critical areas that need certain strength or elastic characteristics, and where to save money by using just plain ol' "Black Iron" in the less critical areas.
Just as in the 3rd volume of "Which is the strongest bridge design?" the simplest and the most heavy solution was the most effective at mass to durability conversion.
Game downloaded, 5 stars left, and a review written. Now just hoping for my lovely piece of artwork. 🤞🏽
Hey where you buy lasercuts? Do you have to send your own metal sheets in or are those included?
Could you add one screen result list to end of video: photos of bridges with results?
Looks to me like a flanged edge on the perimeter would increase strength a lot. Weld a strip to the outline edge of the laser cut plates
This is veery impressive and interesting to watch. Because we would know how much should the bridge hold (if it would be all steel.) For example, the first bridge was starting to break somewhere at 1400 kg. So if we will build 100x bigger bridge made out of all steel, it would hold safely around 1200 tons. (1200kg x 100 means 100 times bigger bridge whitch can hold 1200 tons.) Haha. Thats very easy mathematics, i know. But its interesting to think about it xD
What about Tempered steel? I'd love to see another bridge video with the bridges, after being tempered.
I remember back at the beginning of the channel you kept talking about upgrading to a more powerful press, 100 ton or 1000 ton or something like that. Did that ever happen?
I know other countries have different systems that are superior in some ways, but do any other people in the US feel briefly awkward when seeing commas used as decimals, as I do? Great content as always !
Nice 👍 I'm downloading your game know....
Looks like at the bridges are twisting before failing. Maybe roll a bead or crease in the side plates?
Love these bridge ones
I think the supports should also have diagonal bars too make triangle shapes.
With these bridges being sheet steel, the most important part is the underside support in tension as the top cannot support the compression loads. Need a design with large end supports and a large underside inverted arch for tension loading. The top support still needs to exist but should not be the primary load bearing side.
Idea for pressing.... What about trying to "staple" sheets of materials together. Stapler 500000.
Triangles. Statically the most stable, and load bearing shape you can get. Build a bridge that has nothing, but triangles, and the sides' axis of the triangles must coincide in every junction, otherwise you are introducing torque forces, instead of pure push-pull forces. Focus on parallelism, and to avoid unnecessary torque/force junctures.
Using tubing instead of the sheetmetal truss work will work a lot better!
Hi
I'm the designer of the first and second last bridge. Both of those were designed with shape optimazation, and I'm gladly suprised the performed excactly as I estimaited. The shape was optimized for 1 ton load so I was suprised that some designs got over 3 tons. I know HPC has still one of my designs which I don't have high hopes for (estimated 1ton and heavier than the second last). I know I could do better but too bad they don't take more entries. I'm little "pantsdrunk" while writing this, so I'm sorry if this is confusing but in the nutshell: Thanks I was involved, too bad I wasn't the best.
Santtu,
Finn who just started studying construction engineering.
it looks like many of the bridges depend on being welded to the cliffs
Poly bridge with metal stuff..cool:)
Tension bridges like 7:00 are super strong, but without a tether to the sides it doesn't work at all. You could even make it with wire, but you HAVE to make the sides of the bridge fixed. As it is now they will just move about, unlike real bridges.
3d pen structural designs would be cool and i would sho a cheap alternative for stuff like this
Perhaps the sheet itself has cavities and when pressed they crack.
And try to make a triangular construction at the top it will last longer. Next question will it last longer if the poles are twisted?
Wondering if thermal camera could detect how the force is spread across the structure?
Hyvä video, toivon lisää!
Putting pressure in one area. Try putting a bigger foot print on the press.
you should hold a world wide competition
I think the problem isn't the design, but rather how you use the material. All those supports are not doing well because they're so thin and just bend to the sides, thus loosing most of their initial strength.