Numerical modelling of nonlinear thermo-electro-elasticity
Numerical modelling of nonlinear thermo-electro-elasticity
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DOI：
10.1177/1081286517729867
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发表时间：
2017-11-01
影响因子：
2.6
通讯作者：
Steinmann, Paul
中科院分区：
文献类型：
--
作者：
Mehnert, Markus;Pelteret, Jean-Paul;Steinmann, Paul
本工作提出了电活性聚合物（EAP）的非线性热电弹性的数值模拟。EAP的特征在于其将电能转换为机械能的机电耦合行为。由于聚合物材料通常对温度的影响敏感，因此热效应在EAP的材料行为中起着重要作用。本文在前人提出的热-电-力耦合本构框架的基础上，建立了一种变分形式，并采用有限元法求解非线性热-电-力耦合问题。通过几个例子的数值实现进行了研究。
This work presents the numerical modelling of nonlinear thermo-electro-elasticity in the context of electro-active polymers (EAPs). EAPs are characterised by their electro-mechanical coupling behaviour that converts electrical into mechanical energy. As polymeric materials in general are sensitive to the influence of temperature, thermal effects play an important role in the material behaviour of EAPs. Based on a thermo-electro-mechanically coupled constitutive framework presented in an earlier contribution, a variational formulation is developed and the finite-element method is employed to solve the nonlinear thermo-electro-mechanical coupling problem. The numerical implementation is studied by means of several examples.