扩散效应对无限大板广义热弹响应的影响

The Influence of Diffusion on Generalized Thermoelastic Response of an Infinite Plate under Thermal and Mechanical Shock

基于Sheiref等发展的广义热弹性扩散理论,建立该理论的有限元控制方程,采用直接在时间域求解有限元方程的方法研究了无限大各向同性板受到冲击载荷的广义热弹性响应问题。将所得响应(温度、位移、应力等)与L-S广义热弹性理论得到的结果进行比较,发现在不同类型载荷的冲击下,扩散效应对冲击的响应有着不同的影响,所得结论对工程应用有一定的指导意义。

Base on the generalized thermoelastic diffusion theory developed by Sheiref et al, the ther-moelastic problem of an infinite generalized thermoelastic diffusive plate impacted by thermal and mechan- ical loads was investigated by using finite element method. The responses （temperature, displacement, stress, etc.） were obtained and compared with the results of L-S generalized thermoelasticity theory without diffusion. For the different types of loads, the influence of diffusion on thermal response and me- chanical response are different. There is certain guiding significance in engineering.