This is the most helpful thing ever. I can't thank you enough! I learned more from this video than I have in any of my lectures. Thank you for being so clear and not trying to just confuse us like so many teachers do!!!!!
Amazing... I was just killing myself over this issue untill i came across your video. Thank you Mark, you've made another Mech Engineering student's life more easy =]
You are most welcome. My hobby these days is collecting hits on the RU-vid channel. If these videos are particularly helpful to you, please spread the word. I think it would be really cool to get 1 million hits on the channel.
I'll do just that, I'll share with friends on my course. We're studying Aerospace Engineering at the University of Liverpool, 2nd year. Thanks again :-)
Thank you for the excellent video. There are many more which I have found very useful as well which I have not liked or commented on (just because I have forgotten to). Thanks +++
I think you have drawn the shear stresses in the negative direction. The normal convention is that a +ve stress acts on a +ve face in a +ve direction. You have used this convention for the normal stress components.
great videos! but do you have any examples on how to figure out the maximum shear stress when you only have the minimum principal stress and the failure envelope details?
Hi.Quick question: I have never before come across your von Mises equation. I am more used to seeing and using the one which takes into account all 3 principal stresses. Can you point me to where the one you have used comes from please? Also, it seems that you left out the -ve sign when multiplying stress1 and stress2, but your answer is correct.I want also to thank you for all your videos which I have used extensively in my studies and have found extremely helpful and well presented. As a mature student of Open University, your input is invaluable and very welcome. Thank you.
because we are working on a 2 dimension problem, component 3 values are zero. so if you substitude σ3 with 0 in the general von mises equation and calculate the bracket squares and add them up, you will get that equation.
I work as a Civil Engineering, and when people consider a Von mises stress analysis, people normally consider 0,6 Fy. I believe that this conservative criterion is wrong, and we need to consider just Fy or, maybe, 0,9 Fy if we want to be a little bit conservative... Any comments about it? I'd appreciate them a lot amigos.
One question. The obtained vonmiser stress must be within von miser oval drawn by principal stresses to say that it is safe. but here the vonmiser stress is off course closer to yield stress but not within oval shape. Is that safe?
