复杂结构热屈曲有限元分析

实现了机械载荷和温度载荷共同作用下复杂结构的弹性分歧热屈曲有限元分析，计算结果表明，局部温度场将使结构的屈曲强度大幅度降低。复杂结构的热屈曲研究具有理论和实际意义。本文研究成果表明，从计算结构力学角度出发，探讨强热源作用复杂结构引起宏观破坏机理研究的可行性

Finite Element Analysis of Thermal Buckling for Complex Structures

In this paper,the elastic bifurcation thermal buckling of a heated complex structure un-der the mechanical loading is carried out by means of finite element method.A correspondingcomputer program for the thermal buckling of complex structures with mechanical loadingand thermal loading is coded in FORTRAN 7 7 and is implemented on microcomputers andSUN 4/490 work station.The numerical results of some examples show that the bucklingcarrying capacity is large-scale decreased due to the thermal loading,The feasibility of study-ing the collaping macro-mechanism of complex structures such as the aircraft under mechani-cal loading and strong thermal loading is illustrated by the research achievement in this pa-per.