中文摘要：

形状记忆聚合物是一类环境响应主动形变智能软材料，是智能材料与结构领域的新兴研究内容之一．宏观概括其物理和力学行为的研究热点，主要包括三个方面：材料与环境之间的信息交换（如热量、能量等），主动形变控制（如驱动方法、形变行为本构建模等），软材料及其结构力学（如相变／转变热力学、复合材料设计等）．形状记忆聚合物的记忆效应源于分子链段本征结构的热运动，受外场激励影响，是分子链段结构（包括构型和构象）松弛行为的宏观表象，遵循Arrhenius定律．论文从物理和力学两方面讨论了形状记忆聚合物的分子链段热力学行为及其熵弹效应、分子结构松弛力学行为、环境效应记忆行为的物理和力学机制，系统地对形状记忆聚合物分子结构本征属性及其物理机理、记忆效应转变机制及其力学内涵、温度记忆效应、多场耦合效应响应行为等热点和难点问题进行了分析和讨论．最后，论文展望了形状记忆聚合物力学行为研究的未来发展方向．

英文摘要：

As one of the most promising stimulus-responsive and smart polymer materials, shape memory polymer （SMP） has attracted great attention in the research field. There are three major research topics on the physics and mechanics of SMP summarized as： exchange between the SMP and the surrounding （e. g. heat, energy etc. ）, control of shape change （actuation approach, constructive modeling etc. ） and its soft matter （thermodynamics, composite etc. ）. The shape memory effect （SME） in SMPs from the thermodynamic of intrinsic molecular structures, is induced （or triggered） by external stimuli, obeys Arrhenius rule and relaxation behavior. In this review, the mechanism of SMPs presented and discussed thermodynamics, entropy effect, mechanical behavior and stimulus-responsive shape recovery behavior, transition temperature, temperature memory effect, multi-field effect and multi-shape memory effect. Finally, the future work of mechanics forecasted and discussed.