A cylindrical rod (L = 0.1) (r=7.5mm) is fixed on a wall. A point c lies on its radius an angle (theta =30 degrees) from the positive Z axis.
1) Find the state of stress of a cubic element at location c assuming its in plane stress. Transverse shear for the circular crossection can be assumed to be tau = 4V/3A where V is the shear load and A is the area.
2) Assume C is now a small crack at angle (theta =30 degrees) from the positive Z axis located on the outer radius. Use a 2D stress transformation to tranform the stresses to find stress in the n direction, stress in the t direction, and shear in the t-n plane.
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