热驱动形状记忆聚合物及其复合材料热力学本构模型

Thermomechanical constitutive models of thermally-induced shape memory polymers and their composites

热驱动形状记忆聚合物主要通过温度变化来实现形状记忆和回复,因此热力学本构模型对其结构设计、力学特性和回复效果的预测具有重要作用。总结了近几十年来热驱动形状记忆聚合物热力学本构模型的发展动态,对相转变理论、粘弹性理论及两者相结合的方法进行了综述。评述了纤维增强和编织物增强形状记忆复合材料几种主要的热力本构模型。对热驱动形状记忆聚合物及其复合材料热力学本构模型的不足之处作了简要讨论,并展望了今后形状记忆聚合物及其复合材料本构模型的发展方向。

The shape memory and recovery of thermally-induced shape memory polymers are mainly caused by temperature variation.Therefore,thermomechanical constitutive models play an important role in structure design,mechanical properties and prediction of recovery effect of thermally-induced shape memory polymers. The development of thermomechanical constitutive models of thermally-induced shape memory polymers in recent decades was summarized,the phase transition theory,viscoelastic theory and their combination methods were reviewed. Several main kinds of constitutive models for fiber-reinforced and woven fabric-reinforced shape memory composites were reviewed. The shortcomings of these thermomechanical constitutive models for thermally-induced shape memory polymers and their composites were discussed briefly,and the future development direction of the constitutive models of shape memory polymers and their composites was prospected.