【摘要】 数学分析的方法难于求解复杂几何形状和多样化的边界条件的热应力问题。特别是在非定常的情况下,温度变化范围比较大,物性系数随温度的变化是显著的。如果考虑这种情况,则问题更难以解决。该文用有限元法来求解非定常热传导和热应力的轴对称问题,求解过程中考虑了物性系数随温度的变化,并将问题作为拟静态来处理,边界条件下受限制。更多还原

【Abstract】 An axisymmetric problem for non—steady heat conduction and thermal stress is studied by a finite element method in this paper.The material properties vary appreciably with temperature fluctuations in non—steady state.Corresponding functional and fundamental equations of the finite element method are given for these cases,and sample calculations have been then performed.It is shown that the influence of variable material properties on the result of heat conduction and thermal stress is evident.更多还原