Dynamic Thermal Stresses in Composite Hollow Cylinders and Spheres Caused by Sudden Heating

抄録

A numerical method is developed to determine transient, uncoupled dynamic thermal stresses in composite hollow cylinders and spheres subjected to arbitrary prescribed symmetric temperature fields. The numerical procedure employs appropriate characteristic relationships on boundaries and on interfaces between media with different material properties while using more convenient explicit finite difference approximations at all other points. Numerical examples are given for stress wave propagation in two-layered composite hollow cylinders and spheres subjected to sudden heating on the inner boundary, and the results clearly show the propagation and reflection of discontinuities in stresses and velocities.