A microstructurally based orthotropic hyperelastic constitutive law
A microstructurally based orthotropic hyperelastic constitutive law
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DOI：
10.1115/1.1485754
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发表时间：
2002-09-01
影响因子：
2.6
通讯作者：
Grosh, K
中科院分区：
文献类型：
--
作者：
Bischoff, JE;Arruda, EM;Grosh, K
开发了一个本构模型来表征一类表现出超弹性正交各向异性机械行为的聚合物和类聚合物材料。应变能函数源自与组成大分子的变形相关的熵变以及与代表性正交各向异性晶胞的变形相关的应变能变化。通过将理论与文献中的实验结果进行比较，检验了该模型预测非线性正交各向异性弹性行为的能力。使用有限元方法对更复杂的边值问题进行模拟。
A constitutive model is developed to characterize a general class of polymer and polymer-like materials that displays hyperelastic orthotropic mechanical behavior. The strain energy function is derived from the entropy change associated with the deformation of constituent macromolecules and the strain energy change associated with the deformation of a representative orthotropic unit cell. The ability of this model to predict nonlinear orthotropic elastic behavior is examined by comparing the theory to experimental results in the literature. Simulations of more complicated boundary value problems are performed using the finite element method.