Fatigue for Combined Loading & Estimating Number of Cycles Until Failure

Поделиться
HTML-код
  • Опубликовано: 29 окт 2024

Комментарии • 41

  • @giorgos_mark8401
    @giorgos_mark8401 Год назад +1

    Im in uni right now and you are 100x better than my professor on explaining the solutions. Thank you so much.

    • @TheBomPE
      @TheBomPE  Год назад

      I'm glad you are finding my videos helpful! Best of luck in your studies!

  • @Simulit
    @Simulit 3 года назад

    I learned Fatigue by ONLY your Tutorials. Greatly appreciate you...

  • @theitandthem
    @theitandthem 6 лет назад +7

    Flawless transition Dr. Swanbom. Flawless.

  • @joesaad3089
    @joesaad3089 4 года назад +2

    Your classes are epic Dr thank you for downloading these lectures on RUclips

    • @TheBomPE
      @TheBomPE  4 года назад +2

      Thanks for the positive review! I'm glad you like them!
      In case you haven't seen them yet, you might be interested in these playlists:
      ENGR122 (Statics & Engr Econ Intros): ruclips.net/p/PL1IHA35xY5H52IKu6TVfFW-BDqAt_aZyg
      ENGR220 (Statics & Mech of Mat): ruclips.net/p/PL1IHA35xY5H5sjfjibqn_XFFxk3-pFiaX
      MEMT203 (Dynamics): ruclips.net/p/PL1IHA35xY5H6G64khh8fcNkjVJDGMqrHo
      MEEN361 (Adv. Mech of Mat): ruclips.net/p/PL1IHA35xY5H5AJpRrM2lkF7Qu2WnbQLvS
      MEEN462 (Machine Design): ruclips.net/p/PL1IHA35xY5H5KqySx6n09jaJLUukbvJvB
      (MEEN 361 & 462 are taught from Shigley's Mechanical Engineering Design)
      Thanks for watching!

  • @TheWuZhao
    @TheWuZhao 2 года назад

    Wow, we did it. It was a marathon; it was beautiful. Well, you did the engineering and I did the learning. It took you two days to present and it took me two days to watch. It was fantastic. The theoretical has been satiated, but the practical is hungry for more. If we built this machine, how close to the life would it fail? Is Where does Shiggley come up with these devices?
    Is it machined from one piece, a bent rod welded to a plate, cast, maybe 3D printed?
    Thank you, keep the quality videos coming. Looking forward to Gerber & ASME Elliptic Fatigue Failure Criteria.

    • @TheBomPE
      @TheBomPE  2 года назад

      I do my own example problems and apply Shigley's methods to them. I'm glad you found the video helpful! I wasn't focused so much in this video on how the parts would be made, but it is true that those considerations should generally be thought through. Thanks for your encouragement!

  • @KK-it1ts
    @KK-it1ts 3 года назад +1

    Crystal Clear

    • @TheBomPE
      @TheBomPE  2 года назад

      Thanks! Glad you liked it!

  • @miladrad5901
    @miladrad5901 4 года назад +1

    Thank you Mr. Michael Swanbom., your videos are so awesome . Would you please share the handouts as well? tanx in advance

    • @TheBomPE
      @TheBomPE  4 года назад

      Thanks for the positive review! I don't really make handouts for my lectures necessarily, but I don't mind sharing my notes if there are particular lectures you are interested in. Thanks for watching!

  • @StenCheesemonger
    @StenCheesemonger 5 лет назад +2

    Nice, I'm doing it right... now I need to do it within the test's allowed time.

    • @TheBomPE
      @TheBomPE  5 лет назад +1

      Ah yes, that is another success parameter isn't it? :)

    • @StenCheesemonger
      @StenCheesemonger 5 лет назад

      @@TheBomPE Well yes. First time I'm doing the subject and the first test already taught me that knowing the theory and steps is not enough, guess it's a bit like calculus, sit my butt in a chair and train until I "Get "it"" and manage to do it enough speed. A bit of a daunting task when you need neat drawn free-body diagram for each section of an axle, and a neat drawn mohr's circle and figure for the state of plane-stress... before you get the actual fatigue problem.
      Anyways nice thorough lesson

  • @MrJohanh80
    @MrJohanh80 Год назад

    Greetings from Colombia professor. I'm so glad with this kind of videos. How do I calculate the notch sensitivity of a keyway shaft? I hope you can help.

  • @adrianalbertomunozcruz4024
    @adrianalbertomunozcruz4024 2 года назад +1

    Thank you so much for this professor. This really helped me to understand this subjects. I just have a question, and that is: what could we do if we were asked to calculate the diameter of the rod to have an infinite life?

    • @gabewebb8936
      @gabewebb8936 2 года назад

      You would ideally know your forces so your stress varies based on the area. You would then based on your criteria make sure that the stresses fall below your curve. IE. Find your stress in terms of diameter plug into your equation for failure criteria and solve for d so that the equation is satisfied

  • @jandroinspace
    @jandroinspace 5 лет назад +1

    thank you so much for posting this!

    • @TheBomPE
      @TheBomPE  5 лет назад +1

      I'm glad it helped, thanks for watching! You might also find the lectures from my other Shigley-based courses helpful...see these playlists: MEEN361: ruclips.net/p/PL1IHA35xY5H5AJpRrM2lkF7Qu2WnbQLvS and
      MEEN462: ruclips.net/p/PL1IHA35xY5H5KqySx6n09jaJLUukbvJvB

  • @gerard-nagle
    @gerard-nagle 3 года назад +1

    Great videos. What software do you use for the scrolling background?

    • @TheBomPE
      @TheBomPE  3 года назад

      Thanks! I use Microsoft Onenote 2007. (Last version with customizable toolbars :)

  • @sameterkan3892
    @sameterkan3892 3 года назад

    Thanks much professor,
    I have a question, do you square part example not rod :) how can we find Kt, Kf?

  • @jitongduan5960
    @jitongduan5960 5 лет назад

    Hello Professor, the class was super clear, thanks a lot. I kinda have a question regarding the equivalent mean bending stress. In the Juvinall textbook, it was denoted as the max principal stress resulting from the superposition of all existing static mean stress; like Sem = Sm/2 + sqrt(Tao_m^ 2 + (Sm/2)^2). I am wondering that how much difference between this equation and the Von Moses equation you mentioned in the video to calculate equivalent mean bending stress?

  • @speedbird7587
    @speedbird7587 2 года назад

    thanks sir, neat explanation!

  • @oneofyk
    @oneofyk 4 года назад

    Hello Dr. I used Goodman's to find number of cycles. Was much lower.. 185.28. Is Goodman's much more conservative when used on fluctuating stress?

  • @estoylopez
    @estoylopez 4 года назад

    Why do you calculate the theoretical stress concentrator if you dont use them?
    you only use the fatigue stress concentrator to calculate the von mises.
    Thanks

  • @jjalgu8696
    @jjalgu8696 6 лет назад +2

    thank you it was great help to me!
    what was the textbook of this class?

    • @TheBomPE
      @TheBomPE  6 лет назад +1

      We use Shigley, 10th ed. Glad you liked it!

  • @CrisDFF30917
    @CrisDFF30917 4 года назад

    Hello Mr. Swanbom what is the name of the book you are using on this course?

    • @TheBomPE
      @TheBomPE  4 года назад

      I use Shigley's Mechanical Engineering Design, 10th edition. Thanks for watching!

    • @CrisDFF30917
      @CrisDFF30917 4 года назад

      @@TheBomPE thank you, I just have a doubt when Loads are same frequency but out of phase the method consists in finding the stress of each load in function of time and then combine them with Von-Mises (which also will be in function of time)? And if so, my Alternating and Mean Stress are those of that time-function-Von Mises (max and min)?

  • @cyrusIIIII
    @cyrusIIIII 5 лет назад +2

    How did you change your shirt during class? :)

    • @TheBomPE
      @TheBomPE  5 лет назад +1

      Ha ha, I wish that was the worst of the production foibles I have out there! :)

  • @xiahua3811
    @xiahua3811 2 года назад

    Did we forgot the normal shear stress?

  • @ahmadelbliwi5626
    @ahmadelbliwi5626 3 года назад

    What is the name of app you r using

    • @TheBomPE
      @TheBomPE  3 года назад +1

      I do the notes in Microsoft Onenote. Thanks for watching!

    • @ahmadelbliwi5626
      @ahmadelbliwi5626 3 года назад

      @@TheBomPE u r thanked for doing this lectures ver very useful
      May (allah) bless you ❤

  • @ahmetkulaksiz5674
    @ahmetkulaksiz5674 4 года назад +1

    Hello Sir,
    Your class is amazing. I am studying LCF using FE model. But i have some questions about it. Could you share your e-mail for me to contact?

    • @TheBomPE
      @TheBomPE  4 года назад

      I teach Mechanical Engineering at Louisiana Tech University. Please find my contact information on that website; my name is Michael Swanbom. I always try to help as much as I can, while trying to balance it against my other duties as well. Good luck!

    • @fatimaal-zahraa5016
      @fatimaal-zahraa5016 4 года назад

      hello can you learn me how you use model to study !