热层合结构横向应力分析的仿真

复合材料热层合结构已广泛应用于航天飞行器.横向应力对复合材料热层合结构的破坏失效具有重要影响.文中基于层合板的一阶剪切变形理论,利用后处理方法,编制设计了复合材料热层合结构横向应力分析计算软件.应用该计算软件对薄板结构厚度方向温度梯度、材料的性能、结构的厚度等参数对热结构的横向应力分布的影响进行了分析讨论.算例表明,剪切弹性参数对热结构的横向应力沿厚度方向的分布影响明显.该方法能用于相关热结构的分析设计.

Simulation of Transverse Stress on the Thermal Laminate

The thermal laminate of composite material is applied widely. It is proved that the transverse stress is the key factor which causes delamination and failure of composite material. Based on extending the first order shear deformation theory, software for calculating the transverse stress of composite laminate is developed by combining the method of post - progress. The effects of many factors on the distribution of transverse stress are discussed by using this software. The results show that the cut - elasticity parameter affects obviously the distribution of transverse tress along the thick direction. This method can be used in relative analysis and design of thermal laminate.