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题目内容
（请给出正确答案）
4. In the OXYZ Cartesian coordinates, a stress state of a point is
(1) Draw the stress unit cube with the stresses labeled on X, Y and Z planes; (6 points)
(2) One of the X, Y and Z planes is a principal plane. Which is the principal plane, and what is the principal stress on it？ (4 points) (3) Find the characteristic equation of the stress state, and solve the other 2 principal stresses at this point; (6 points) (4) Calculate the maximum shear stress and the mean stress at this point. (4 points)
更多“4. In the OXYZ Cartesian coordinates, a stress sta...”相关的问题
第1题
A、f= x*sqrt(4-x^2); int(f, x, -2, 2)
B、syms x; f=x*sqrt(4-x^2); int(f, x, -2, 2)
C、syms x; f=x*sqrt(4-x^2); int(f, x, 2, -2)
D、syms x; f=sqrt(4-x^2); int(f, x, -2, 2)
第2题
A、f= x*sqrt(4-x^2); int(f, x, 0, 2)
B、syms x; f=x*sqrt(4-x^2); int(f, x, 0, 2)
C、syms x; f=x*sqrt(4-x^2); int(f, x, 2, 0)
D、syms x; f=sqrt(4-x^2); int(f, x, 0, 2)
第3题
A、f=sqrt(4-x^2); int(f, x, -2, 2)
B、syms x; f=x*sqrt(4-x^2); int(f, x, -2, 2)
C、syms x; f=sqrt(4-x^2); int(f, x, 2, -2)
D、syms x; f=sqrt(4-x^2); int(f,x, -2, 2)
第4题
A、f=sqrt(4-x^2); int(f, x, -1, 1)
B、syms x; f=x*sqrt(4-x^2); int(f, x, -1, 1)
C、syms x; f=sqrt(4-x^2); int(f, x, 1, -1)
D、syms x; f=sqrt(4-x^2); int(f, x, -1, 1)
第5题
A、f=(x^4+1)/(x^2+1); int(f,x)
B、syms f; f=(x^4+1)/(x^2+1); int(f,x)
C、syms x; f=(x^4+1)/(x^2+1); int(f,x)
D、syms x; f=(x^4+1)/(x^2+1); lnt(x,f)
第9题
A、x=4 y=4
B、x=2 y=2
C、x=4 y=2
D、x=2 y=4
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