The Thermal Stress By Hybrid Finite Element Method

Hybrid finite element method is analyzed and applied in the axisymmetric problem, of which the calculation equations are deduced. At the same time, the computing program is written by VC++. In the program quadrilateral isoparametric element is used to calculate its temperature field and thermal stress field. The paper analyzes and discusses the law that the result precision of thermal stress is affected by the proportionments of element border length, border condition, form function and so on, and compares the method with displacement finite element method being used. At last, some referrible and valuable conclusions are drawn.