Feel free to ask questions regarding the week of September 24 - 30, 2007 here by adding a comment to this post.
5 comments:
Anonymous
said...
Regarding Homework #3, question 1b. It says to find the stress state when rotated clockwise by 30 degrees. Does this mean the body is rotated by 30 degrees or we rotate on Mohrs circle by 30 degrees? Also, does anybody know when HW 3 is due?
Also on part C of that same problem, did you mean to say what angle will Shear stress be zero, or normal stress. If its normal stress the center of the cir does not lie along the Tau axis therefore you can never have both sides of the body at zero stress unless you account for a 3rd degree of rotation. Please clarify which you want.
Regarding problem 1c, realize that one normal stress is tensile and the other on an orthogonal plane is compressive. It is certainly possible to achieve a rotation where there is A plane with no normal stress.
5 comments:
Regarding Homework #3, question 1b. It says to find the stress state when rotated clockwise by 30 degrees. Does this mean the body is rotated by 30 degrees or we rotate on Mohrs circle by 30 degrees? Also, does anybody know when HW 3 is due?
I believe that you need to rotate the body by 30, so on Mohrs circle its 60 degrees.
Nolan Cousineau
Also on part C of that same problem, did you mean to say what angle will Shear stress be zero, or normal stress. If its normal stress the center of the cir does not lie along the Tau axis therefore you can never have both sides of the body at zero stress unless you account for a 3rd degree of rotation. Please clarify which you want.
Nolan Cousineau
I was wondering about that too in part C. Clarification would be great. Homework 3 is due October 2 (Tuesday).
Judy Brown
Regarding problem 1c, realize that one normal stress is tensile and the other on an orthogonal plane is compressive. It is certainly possible to achieve a rotation where there is A plane with no normal stress.
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