摘要
本文利用边界单元法分析了包括三类边界条件的轴对称热传导问题和轴对称热应力问题.分别用三角形有限单元和常数边界单元计算了柴油机活塞的温度场和热应力场,两种方法所得结果十分吻合.但边界元法准备数据时间和计算时间少(约为有限元法的六分之一),占用计算机内存少,充分显示了边界元法的优点.
In this paper, axisymmetric heat conduction and heat stress problems with three types of boundary conditions are analysed by the Boundary Element Method. The temperature and thermal stress fields for the piston of a diesel engine are calculated using triangular finite elements and constant boundary elements respectively, and the two results are agreeable. However, B. E. M. needs fewer data, less computer time(about one-sixth of that of F. E. M.) and storage volume. The advantages of B. E. M. are sufficiently demonstrated.
出处
《湖南大学学报(自然科学版)》
EI
CAS
CSCD
1993年第2期53-62,共10页
Journal of Hunan University:Natural Sciences
关键词
热传导
边界元法
热应力
轴对称
heat conduction
B. E. M.
elliptic integral/heat stress