The solid shaft, which has a diameter of d = 30 mm, is acted upon by a torque T = 1.8 kNm and a traction force P = 250 kN. The material of the part is isotropically elastic and its elastic modulus E = 170 GPa, Poisson's constant v = 0.36 and yield strength R = 340 MPa. Calculate the certainty of the stress state with respect to length when, all stress components are increased by the same factor. Hint The maximum stresses are obtained on the surface of the shaft. The stress components are a = P/A, Txy = (T *r)/1,, where I, = ( * d)/32 a) Determine the normal stress a MPa. b) Determine the shear stress Tay Tay c) Determine the reference stress according to the von Mises yield condition, MPa and overt = = MPa. d) certainty of sales ratio according to von Mises, NVVEH P Txy (HD) - 5x