一维热应力缓和型功能梯度材料的计算机辅助设计系统

Computer Aided Design System for One Dimension Thermal Stress Relaxed Functionally Graded Materials

摘要: 基于经典的叠层板理论和热弹性力学的有关理论,合理简化边界条件,建立了一维非对称热应力缓和型功能梯度材料(DFM)分析模型。推导出FGM在稳态温度场下温度分布函数及热应力分布函数。在此基础上,开发出了非对称热应力缓和型功能梯度材料计算机辅助设计系统FGMCAD.FGMCAD的作用在于能够通过改变FGM的各项设计参数来实现残余应力和工作应力在FGM中的分布达到最优。还给出了在设计1个FGM时系统的运行实例。

Abstract: The analysis model used for calculation of thermal stress in FGM is estab-lisd based on, The classical lamination theory and thermal-elastic mechanics with five assumptions. The distributions of temperature and thermal stress in FGM under steady state temperatue field are derived. By means of FGM and combination with Visual Basic for Window, FGMCAD is established. The optimum distribution of thermal stress in FGM can he realized by any the relative parameters with FGMCAD, thus the optimum parameters of FGM design are determined.