ANS. A cylindrical tank having diameter d = 2.5 in. is subjected to an internal gas pressure p = 600 psi and an external tensile load T = 1000 lb (see figure). Determine the minimum thickness of the wall of the tank based upon an allowable shear stress of 3000 psi. 0.125 inches T T

A = Tab Problem 1. An ellipse with semi-major axis a = 150 mm and semi-minor axis b = 100 mm is etched on a brass plate. The plate has dimensions 400 x 400 × 20 mm. Uniformly distributed normal stresses ox = -25 MPa and o, = 50 Mpa are applied to the plate. The Young's modulus E = 100 GPa, and Poisson's ratio v = 0.34. (Note: The ellipse remains an ellipse after stretching, but with different semi-major and semi-minor axes.) Find: a) The change in the area of the ellipse. Oy The in the thickness of the plate. b) c) The change AV in the volume of the plate. Ox a. -b- Ox a d) The strain energy, U, stored in the plate. Ty