Elastic-plastic Transition of a Non-homogeneous Thick-walled Circular Cylinder under Internal Pressure

摘要

Elastic-plastic stresses have been derived for a cylinder under internal pressure using Seth's transition theory. The effect of non-homogeneity has been discussed numerically and depicted graphically. It has been observed that a cylinder made of non-homogeneous material with non-homogeneity increasing radially requires a higher percentage increase in pressure to become fully plastic than to its initial yielding as compared to a homogeneous cylinder and is on the safer side of the design.