Mohr's Circle (2/2 - principal and max shear stresses) - Mechanics of Materials

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  • เผยแพร่เมื่อ 11 ม.ค. 2025

ความคิดเห็น • 221

  • @ericsuda4143
    @ericsuda4143 9 ปีที่แล้ว +387

    When youtube helps more than going to lectures

    • @calinsa3880
      @calinsa3880 7 ปีที่แล้ว +13

      its so awkward trying to find other " academic " sources, when you really just need to cite youtube videos, but then you can;t because they are " un-trustworthy" sources...

    • @structurefree
      @structurefree  5 ปีที่แล้ว +10

      @@calinsa3880 you can't just go around listening to strangers on the internet.

    • @alexandrugorincioi3453
      @alexandrugorincioi3453 4 ปีที่แล้ว +1

      Especially if you are erasmus)))

    • @alfredtovarjr2048
      @alfredtovarjr2048 3 ปีที่แล้ว

      my professor sucks!!!!!!

  • @cszczepaniak
    @cszczepaniak 9 ปีที่แล้ว +74

    This video does a great job of explaining Mohr's circle. The clarity and level of detail is perfect, and the way that the information is presented makes this topic very intuitive, especially to students who may have learned Mohr's circle once but were confused by its relevance or its conventions. Often, the introduction of Mohr's circle does more harm than good and causes further confusion. Even engineers who already took a Mechanics of Materials class would benefit by watching this video to truly understand the concept. It would be ideal if all professors taught Mohr's circle like this, but unfortunately that is not the case.

    • @structurefree
      @structurefree  9 ปีที่แล้ว +20

      Wow! Thank you for the very thoughtful comment. Ha, it even made me want to watch the video again!

    • @micahackerman2405
      @micahackerman2405 6 ปีที่แล้ว +2

      Yeah. Often, professors don’t show the relationship between pheta s and pheta p clearly.

  • @faridzakwan7868
    @faridzakwan7868 9 ปีที่แล้ว +136

    Im grateful for whoever you are for making videos for this . Love you buddy . Simple and clear .

    • @structurefree
      @structurefree  9 ปีที่แล้ว +34

      Thank you for the kind words and positive comment! #beingkindontheinternet

    • @faridzakwan7868
      @faridzakwan7868 9 ปีที่แล้ว +3

      +structurefree you think i can possibly reach you by email ? Theres a lot of mechanic solid problems i want to ask . Thankyou

  • @deba9194
    @deba9194 10 ปีที่แล้ว +60

    I really dont want to hate this class since im a mechanical engineer but my teacher is such a drag. Thanks for giving me a little hope!!

    • @structurefree
      @structurefree  10 ปีที่แล้ว +4

      Desiree Batista keep hope alive!

    • @joshuakoehler6457
      @joshuakoehler6457 5 ปีที่แล้ว +5

      Just wait till you get to aerodynamics...

    • @lucki384
      @lucki384 4 ปีที่แล้ว

      @@joshuakoehler6457 HAHAHAHAHAHA great pun

  • @abdelrahmanramzy6857
    @abdelrahmanramzy6857 8 ปีที่แล้ว +8

    I've a final exam in 2 days and I really had no idea about Mohr or stress transformation so, thank you a lot for making it easy and delivering the information in such a great way.

  • @TheHonchoofAllSpearheads
    @TheHonchoofAllSpearheads 4 ปีที่แล้ว +5

    2-HOUR CLASS ON THIS PARTICULAR CONCEPT = BABBLING TO THE WHITEBOARD
    You in two 6-min videos = Perfecto!

  • @s.a6836
    @s.a6836 5 ปีที่แล้ว +1

    THANK YOU. My professor tried to explain this and it went right over everyones head but the way you explain is just amazing. Because of you I have hope of not failing this course.

  • @roblesjor
    @roblesjor 6 ปีที่แล้ว

    30 years later after I learned this concept during my undergraduate studies, I needed to refresh the ideas about Mohr's circle... and this video did the trick perfectly, thanks!

  • @Nikita-tr1zz
    @Nikita-tr1zz 8 ปีที่แล้ว +2

    You are doing an extraordinarily good job, pal. It is not much, but accept this gift as an appreciation for all the knowledge that I got from watching your videos. Thank you

  • @nem3sics
    @nem3sics 10 ปีที่แล้ว

    i can't believe it… i finally understood mohr's circle… it's a miracle, you made a miracle… thanks for all of your videos!

  • @ziadelalaily6153
    @ziadelalaily6153 10 ปีที่แล้ว +1

    As a Mechatronics engineer, this has helped me a lot in Mechanical Design, thanks a lot and keep up the good work :D

  • @tcscott17
    @tcscott17 3 ปีที่แล้ว +1

    Your videos are great. They explain very hard things in a easy to understand way. Thanks for all the effort you put into these.

  • @pburt68
    @pburt68 10 ปีที่แล้ว +2

    Thank you so much for posting this tutorial man! I was completely lost and had a difficult time understanding Mohr's Circle but you completely clarified it for me! Awesome!

  • @rhyswilliams849
    @rhyswilliams849 7 ปีที่แล้ว +1

    Top video dude, the clear diagrams relating the circle to the physical world put this vid way ahead of any others I've seen

  • @Shiro-Foxy
    @Shiro-Foxy 9 ปีที่แล้ว +4

    StructureFree.....Free of nonsense....structured with awesome clarity

  • @mousee7707
    @mousee7707 6 ปีที่แล้ว +1

    Thank you! This explanation is very comprehensive and clear! My teacher’s lecture was terrible and did not explain the details. Now I understand this! Thanks again!

  • @nicholasramos9786
    @nicholasramos9786 7 ปีที่แล้ว +2

    I'm studying for my final right now and you've cleared this up so much better than my professor has. Thank you, dude.

    • @rafilahmed2013
      @rafilahmed2013 3 ปีที่แล้ว

      did you pass

    • @AyyOneM
      @AyyOneM ปีที่แล้ว

      @@rafilahmed2013 did you

    • @rafilahmed2013
      @rafilahmed2013 ปีที่แล้ว

      @AyyOneM haha yes, got a first class degree

  • @StreetSmart
    @StreetSmart 7 ปีที่แล้ว +2

    my god, this is amazingly simple and intuitive when you explain it....bruh.......you are my hero!

  • @HolyManta
    @HolyManta 10 ปีที่แล้ว +15

    you help me more than Mechanics of materials!

  • @MrRaja147
    @MrRaja147 8 ปีที่แล้ว +5

    this made me cry, ur such a great teacher, thanks for doing this SIR!

    • @kujiYoutube
      @kujiYoutube 8 ปีที่แล้ว +2

      absolutely, hw simply he explain, amazing, save time to understand from a junk book :3

    • @JamieLachlan
      @JamieLachlan 7 ปีที่แล้ว

      I thought you would be studying chemistry so you can make a drug that would reverse the effects of Apotoxin. :p

  • @zariefqist
    @zariefqist 9 ปีที่แล้ว +1

    thank you soooooooooooo much. I've been troubled since forever until i saw your video

  • @jaisonv.cherian4945
    @jaisonv.cherian4945 8 ปีที่แล้ว +3

    helped me in my preparation a day before the test...great job

  • @adeniyismart8539
    @adeniyismart8539 3 ปีที่แล้ว +1

    Amazingly straight forward, could not ask for less. i am your latest subscriber.

  • @dl2748
    @dl2748 3 ปีที่แล้ว +1

    Wow, I'm from Spain and I don't understand videos in my language, instead I found this and helped me a lot, thanks

  • @victoralgronovo6676
    @victoralgronovo6676 9 ปีที่แล้ว +1

    im absolutely in love with these two videos thanks so much

  • @edsonsabino
    @edsonsabino 10 ปีที่แล้ว +2

    the editing made the video very interest and direct. Amazing job!!!!!!

  • @abdurrahmannocomment7269
    @abdurrahmannocomment7269 3 ปีที่แล้ว +2

    I like your videos. They helped me in dynamics and mechanics of materials. Wish I'd discovered your channel earlier at the start of this semester. BTW you're brilliant.

  • @joshuachang4564
    @joshuachang4564 6 ปีที่แล้ว

    Thank you so much!! You're so much more succinct and clearer than my professor! You're tremendously helpful!

  • @mariagonzalezbracho2315
    @mariagonzalezbracho2315 3 ปีที่แล้ว +1

    I liked this video. It is the best that i have seen from mohr circle

  • @KRDD-KMHR
    @KRDD-KMHR 10 ปีที่แล้ว +1

    I'm so glad I found this series. It's helping me a ton. Thank you

  • @michelm.6704
    @michelm.6704 5 ปีที่แล้ว +1

    Amazing , best courses on the topic .

  • @Cantrelle2
    @Cantrelle2 8 ปีที่แล้ว +7

    My instructor has the intelligence of a gifted troglodyte and could only hope to explain this concept as easily as you did. Thanks bro!

    • @structurefree
      @structurefree  8 ปีที่แล้ว +6

      +paul cantrelle ahhh man I had to google the definition of troglodyte... looks like I'm just another member of the cave. :)

  • @ceciliaallor9561
    @ceciliaallor9561 10 ปีที่แล้ว +1

    I've probably said this before, but you are my hero! Thank you so much

    • @structurefree
      @structurefree  10 ปีที่แล้ว +1

      No problem. Thank you for the kind words! It makes me feel super.

  • @MrRkesh
    @MrRkesh 11 ปีที่แล้ว +1

    nice, this is more helpful than nowadays teachers..

  • @bober4279
    @bober4279 5 ปีที่แล้ว +4

    Absolutely amazing, so clear and concise, cheers :)) Great job

  • @jlep722
    @jlep722 6 ปีที่แล้ว +1

    Great job. Very insightful, keep it up.
    Sincerely, a grateful student

  • @gtpumpkin4
    @gtpumpkin4 8 ปีที่แล้ว +2

    you have actually saved my life for my exam

  • @hadesrow7932
    @hadesrow7932 3 ปีที่แล้ว +1

    Why is this always on youtube that you understand everything in under 15 min... THank you !

  • @kingsi4869
    @kingsi4869 8 ปีที่แล้ว

    Really well explained video mate, the way you explained everything really helped everything click. Cheers for helping me out.

  • @mattv88888888
    @mattv88888888 10 ปีที่แล้ว +4

    Incredibly well explained. Thank you!

  • @michaeln2057
    @michaeln2057 8 ปีที่แล้ว +1

    I ABSOLUTELY LOVE YOU!!! this video is of a Top quality!!!!!!

  • @saloniesaxena5007
    @saloniesaxena5007 10 ปีที่แล้ว +2

    I read the book but I couldn't really get the 2 angles. So much clearer now. You have demonstrated it so well.
    Thanks heaps.

  • @itsMickeyR2
    @itsMickeyR2 5 ปีที่แล้ว +1

    you are a hero. I want you to know you're probably going to help me pass

  • @ATrekafied
    @ATrekafied 8 ปีที่แล้ว +36

    Wow. Mohr's circle is actually pretty rad.

    • @1arribas
      @1arribas 8 ปีที่แล้ว +23

      Yeah, this is really going to help me out in my degree

    • @kmank2l123
      @kmank2l123 8 ปีที่แล้ว +8

      I'm glad you both got the hang of it. Now lets go eat some pie!!

    • @mrzombiesbo
      @mrzombiesbo 7 ปีที่แล้ว +6

      Didn't realize these comments were puns at first.....so I'm glad I gave this thread another round.

    • @gardevoir3097
      @gardevoir3097 6 ปีที่แล้ว +6

      lol thank god I read this thread. It relieved some of my stress!

    • @vlisto3712
      @vlisto3712 4 ปีที่แล้ว

      I was so confused about these comments, but now I'm acutely aware that these were just well engineered puns.

  • @CaspervanEijkWanderlustTF
    @CaspervanEijkWanderlustTF 6 ปีที่แล้ว +2

    thanks so much, finally an easy and understandable explanation

  • @CodyCleggMusic
    @CodyCleggMusic 10 ปีที่แล้ว +3

    great help for finals. Thanks a bunch, mate!

  • @bayakuyakucki5535
    @bayakuyakucki5535 10 ปีที่แล้ว +2

    thanks bro you explain me very well your students must be very happy from you :p

  • @jacksonmate6305
    @jacksonmate6305 7 ปีที่แล้ว +1

    Very good video, explained a 1 hour lecture which was a mess in 12 mins!

  • @ben0405
    @ben0405 10 ปีที่แล้ว +6

    Man.. Seriously. I've been having abit of struggle with my solids recently but you actually helped me heaps !
    I seriously hope you become a professor at a university or somethnig...
    Or are you already? haha

  • @bayuprakoso9992
    @bayuprakoso9992 9 ปีที่แล้ว +7

    your video bring me a engineer sense again after any confuse in class

  • @potong-icecream
    @potong-icecream 5 ปีที่แล้ว +1

    youtube lecturer is better than my Uni lecturers tbh

  • @mdatiqurrahman9951
    @mdatiqurrahman9951 3 ปีที่แล้ว +1

    Incredible explanation 🔥

  • @Poseidon0426
    @Poseidon0426 10 ปีที่แล้ว +1

    You've been a great help!!!! thank you so much!

  • @gemel7801
    @gemel7801 7 ปีที่แล้ว +1

    you are very good teacher..thank you sir!

  • @ahedov
    @ahedov 9 ปีที่แล้ว +1

    Thanks for both videos! Great explaining and easy to understand!

  • @muhammadmufthi938
    @muhammadmufthi938 8 ปีที่แล้ว

    great video!
    however, I dont agree at 5:28, you said you have "positive shear stress".
    it's actually negative. That should be the reason why the "plus face" you referred at 5:40 has counter clockwise direction of the shear stress (on the stress element).
    please correct me if I'm wrong.

  • @febrikurniawan2250
    @febrikurniawan2250 5 ปีที่แล้ว +2

    Thank you sir, it's just more useful than lectures lol

  • @nathanp9684
    @nathanp9684 5 ปีที่แล้ว +4

    pretty late but this has been clutch during finals thanks

    • @structurefree
      @structurefree  5 ปีที่แล้ว

      Never too late! It's just in time.

  • @YuuFlamel
    @YuuFlamel 11 ปีที่แล้ว +1

    Thanks bro =) My book doesn't explain it that well so this was very useful.

  • @samthecarguy1143
    @samthecarguy1143 7 ปีที่แล้ว +1

    Two videos go into better detail than both a machine design lecture and the book required for that class 😂😂

  • @divojdagerg
    @divojdagerg ปีที่แล้ว +1

    Excellent video

  • @Coolnventions
    @Coolnventions 7 ปีที่แล้ว +1

    You are the definition of God

  • @rexonakhatoon8108
    @rexonakhatoon8108 4 ปีที่แล้ว +1

    Awesome explaination!

  • @bhrantkumardandoutiya6954
    @bhrantkumardandoutiya6954 10 ปีที่แล้ว +1

    its great , i like your way to explain , thanks

  • @zafreediqbal1981
    @zafreediqbal1981 7 ปีที่แล้ว +1

    Love From Bangladesh :)

  • @matthewskarbinski5785
    @matthewskarbinski5785 5 ปีที่แล้ว +1

    Thank you so much! Helped me understand lecture much more.

    • @structurefree
      @structurefree  5 ปีที่แล้ว

      You are very welcome! Thanks for supporting my channel.

  • @chiragjangra8370
    @chiragjangra8370 5 ปีที่แล้ว +1

    U r amazing ♥️♥️♥️🔥🔥
    Love from IIT BHU India

  • @joshuaharraka7587
    @joshuaharraka7587 9 ปีที่แล้ว +3

    Great videos. I was wondering, why do we divide by by two when calculating the angle of rotation on the element?

    • @structurefree
      @structurefree  9 ปีที่แล้ว +1

      Joshua Harraka it has to do with the stress transformation equations which can be derived from equilibrium.

  • @stripesofnatasha9262
    @stripesofnatasha9262 10 ปีที่แล้ว +1

    you're a god basically. thanks!

    • @structurefree
      @structurefree  10 ปีที่แล้ว +5

      natashalikesyourface ha, ha, ha. it's still just mohr's circle...too bad we can't use mohr's circle to transform water into wine.

  • @shylildude
    @shylildude 10 ปีที่แล้ว

    at 5:44 why is the shear positive when it's negative on the coordinate and why is it on the right face? why is the shear to the right on the top face?

  • @dilkash14
    @dilkash14 7 ปีที่แล้ว +1

    Thanku sooo so much. Best explanation....

  • @vivekanandsahoo5181
    @vivekanandsahoo5181 4 ปีที่แล้ว +1

    thankyou sir . this was worth watching

  • @chandraprakash934
    @chandraprakash934 9 ปีที่แล้ว +1

    Keep the good work going !

  • @khawla9720
    @khawla9720 6 ปีที่แล้ว +1

    Love from Oman 🇴🇲

  • @kdu-mn6ej
    @kdu-mn6ej 10 ปีที่แล้ว +1

    Awesome stuff thanks. So if you are given sigma-y, it doesn't really show up on the circle does it? Other than for the calculations of sigma-avg..?

  • @ModeyModey3
    @ModeyModey3 5 ปีที่แล้ว +1

    u're amazing buddy
    did u make any other videos with examples?or is it just the 2 videos?

  • @tanya5349
    @tanya5349 8 ปีที่แล้ว +2

    Thanks soo much its really helpful

  • @intrepid35sweden
    @intrepid35sweden 8 ปีที่แล้ว

    At 5:32 why is it on the plus face? Is it because the sigma > 0 ?

  • @papaveneti7759
    @papaveneti7759 6 ปีที่แล้ว

    very good video, but the only question i have is, do we ever use mohr's circle, or the trasformation equations cover us completely?

  • @blondyelowflash
    @blondyelowflash 9 ปีที่แล้ว +1

    just wondering about the rotation hereso if i try to get to max plane stress from the form our original point with the shortest angle on mor's circle i would turn the square anti-clockwise

    • @structurefree
      @structurefree  9 ปีที่แล้ว

      +blondyelowflash it doesn't matter which way you rotate as long as you are consistent and go to the point of maximum shear stress on mohr's circle.

  • @tamzeedelahi4088
    @tamzeedelahi4088 8 ปีที่แล้ว +1

    great video
    you saved me

  • @francescakho7750
    @francescakho7750 9 ปีที่แล้ว +1

    Thank you so much! Can you upload some examples with questions and solutions? Thanks and God Bless!

  • @mariannasaill-dilnot4106
    @mariannasaill-dilnot4106 4 ปีที่แล้ว +1

    LIFESAVER THANK YOU!!

  • @adinesh7989
    @adinesh7989 4 ปีที่แล้ว +1

    You are awesome man,.

  • @iliekduhpie
    @iliekduhpie 8 ปีที่แล้ว

    i have a question regarding the other half - what about sigma Y? do you plot him on (sigma y, Tmax ) too? (btw thanks for the physical explanation ily)

  • @jackli5094
    @jackli5094 6 ปีที่แล้ว +1

    Great video bro! So is the angle of the crack is the theta P that calculated? Or the theta S?

  • @bthrun90
    @bthrun90 6 ปีที่แล้ว

    Thank you! Well-made video. Consider being a teacher/professor.

  • @AnasSuwaidan
    @AnasSuwaidan 8 ปีที่แล้ว

    Can I ask you why u take +t downward on -y direction?
    Thank u for the wonderful explanation it's really smooth and simple.

    • @johnathanledwig1562
      @johnathanledwig1562 8 ปีที่แล้ว

      +Anas Suwaidan By definition shear stress is positive in the downward direction.

    • @AnasSuwaidan
      @AnasSuwaidan 8 ปีที่แล้ว

      +Johnathan Ledwig Thank u, That's why the maximum shear stress is always positive?
      Or because the Radius is always positive and t,max=R

  • @mateope10
    @mateope10 11 ปีที่แล้ว +1

    what program do you use to write and draw?

  • @YasirKhan-wi4wb
    @YasirKhan-wi4wb 5 ปีที่แล้ว +1

    Love you sir/mam❤️👍

  • @chrispendleton9132
    @chrispendleton9132 7 ปีที่แล้ว +1

    thanks man, really helpful

  • @MechanicalSpoon
    @MechanicalSpoon 11 ปีที่แล้ว

    i needed this, thanks

  • @Md.IstiakAdnan-hy9zy
    @Md.IstiakAdnan-hy9zy 2 หลายเดือนก่อน +1

    very very helpful thanks

  • @aerostructures814
    @aerostructures814 7 ปีที่แล้ว

    excellent analysis

  • @thelampsenpai
    @thelampsenpai 5 ปีที่แล้ว +1

    can anyone explain how the angle thetap has to be alpha/2?

  • @Ooko.
    @Ooko. 10 ปีที่แล้ว

    When you determine alpha, from zero degrees to your x-axis, do you always have to go clockwise to your x-axis even if your zero is closer tot sigma2? Or is it always to your sigma 1?

  • @manikantapola5336
    @manikantapola5336 8 ปีที่แล้ว +1

    thank you very much video was awsome

  • @arolyashrafniasa289
    @arolyashrafniasa289 7 ปีที่แล้ว

    what if I take +tau upwards instead of downwards? what changes in that case?

  • @dooooood600
    @dooooood600 9 ปีที่แล้ว +1

    hey! this video is awesome! im doing ME at sjsu and our teacher is asking for two mohrs circles in the main one... any videos/ideas!?!? i could upload the problem statement

    • @structurefree
      @structurefree  9 ปีที่แล้ว

      Clayton Lew Thank you for the kind words. San Jo! You know! It sounds like you are working on determining the absolute maximum shear stress. I don't have any videos on that topic, but most intro mechanics textbooks (hibbeler, beer/johnston, gere/goodno, ugural, etc.) cover that topic. Hopefully you'll get your questions answered by your instructor.

    • @dooooood600
      @dooooood600 9 ปีที่แล้ว

      structurefree yeee thanks man

  • @dereksnyder_4244
    @dereksnyder_4244 9 ปีที่แล้ว +1

    Dude, you rock!!