固化变形和残余应力给复合材料的应用带来威胁,准确的预测固化变形和残余应力可以为复合材料的结构和工艺设计提供调整依据,减小固化变形和残余应力.数值模拟方法因其简单、预测精度高而被广泛采用.本文主要介绍了复合材料固化变形和残余应力数值模拟流程中包含的热传导-固化模块、流动压实模块和应力变形模块.重点详述了应力变形模块中本构方程和模型-构件之间相互作用力研究的最新发展,为固化变形和残余应力预测提供方向和参考.简要讨论当前复合材料固化变形和残余应力预测的主要发展方向.
Cure-induced distortions and residual stresses influence application of composites.Accurate prediction for cure-induced distortions and residual stresses can provide a basis for adjustment of composites structure and process design to reduce the cure-induced distortions and residual stresses.Numerical simulation method was widely adopted due to its simplicity and high prediction accuracy.The sub-models of heat transfer-cure, flow-consolidation and stress-distortion in numerical simulation for cure-induced distortions and residuals stresses in composites were mainly introduced, with a particular emphasis being on state-of-the-art research on the constitutive law and tool-part interaction in the sub-model of stress-distortion.This paper aims at proposing the orientation and reference for the prediction of cure-induced distortions and residual stresses.The future development of cure-induced distortions and residual stresses was discussed.
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