金属模板对复合材料层板固化过程中残余应力的影响

采用商业软件对带有铝板的复合材料层板固化全过程残余应力进行数值模拟计算。在固化瞬态温度场模拟中，采用有限差分法考虑固化动力学模型和热一化学模型强耦合的关系。在残余应力数值模拟中，化学收缩引起的应变在每一计算步以初始应变施加在复合材料结构上。基于以上技术，对带有铝合金的复合材料层板的固化全过程残余应力的进行分析，并分析了金属模板在分析中的作用。结果表明：金属模板改变了两种材料残余应力最大值的时刻；由于金属模板约束作用使带有铝板的复合材料层板在固化过程中承受更大的残余应力。

The Effect of Metal Mould on Residual Stress of Composite Laminated During Cure Process

The process induced residual stress of composite laminated plate with aluminum plate was numerically simulated by commerce software. Finite difference method was employed to consider the strong coupled relation between cure kinetics model and thermal-chemical model during the process of simulation for transient temperature field. Chemical shrinkage was applied to composite materials as an initial strain for each time increment in residual stress simulation Residual stress of composite laminated plate with aluminum plate was successfully simulated on the basis of the mentioned technology. The results show that the time of maximum stress occurred for two materials was changed due to the effect of metal mould; Because of constrain from metal mould, composite laminated bearded more residual stresses compared to that without considering the effect of metal mould during cure process.