Mechanics of Materials: Lesson 52 - Deriving Stress Element for Circle, Combined Loading

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[jakeblanchard]

he's great. I'm taking my final early so I'm having to learn this stuff online. Dr. Hanson always gives me a good laugh while learning

[semisikaufusi]

This is what I want to see…Great job Dr Hanson

[eminkarabacak.]

That's definetely cool Dr. Hanson!!!
(22:07)

[manuboker]

Wonderful solids lessons!! really taking the time to explain the problems along with a good sense of humor :))

[يومياتبوت-دغ]

Thank you. I study mechanical engineering and you helped me a lot

[peter_neff]

I'm confused about the orientation of the stress element. It seems like it's different in different videos in the series. The element shows 0 MPa in the x direction, but in the diagram, there is 300 N shear force in the x direction. The 0 N is in the y-direction in the diagram. It seems to me that the stress element should have σy=0 MPa, σx=0.444 MPa compression (arrows in), and τxy=0.0533 MPa (arrows as they are currently). Either that, or the τ arrows should be flipped. Am I missing something?

[giftd]

How do we know that the σ we calculated is σy and not σx?