Uniaxial and Biaxial Response of Anisotropic Polypropylene,Macromolecular Theory and Simulations

当前位置： X-MOL 学术 › Macromol. Theor. Simul. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Uniaxial and Biaxial Response of Anisotropic Polypropylene
Macromolecular Theory and Simulations ( IF 1.8 ) Pub Date : 2020-05-29 , DOI: 10.1002/mats.202000018
Tarek Kershah _{1,

2} , Patrick D. Anderson ₁ , Lambèrt C. A. van Breemen ₁

Affiliation

The response of uniaxial and biaxial anisotropic polypropylene is discussed. A 3D elasto-viscoplastic constitutive model is developed to account for material anisotropy. The famous Hill’s anisotropic yield criterion is combined with the Eyring relation and implemented in a finite element framework to model the response of the polymer during uniaxial loading. An associated viscoplastic flow rule that describes the magnitude and the direction of the viscoplastic flow is incorporated in the model to simulate complex loading conditions. The model quantitatively captures the yield stresses for uniaxial deformation at a given anisotropic state and material orientation. In addition, the results of simulations demonstrate that the constitutive relations qualitatively describe the material deformation during biaxial loading for both isotropic and anisotropic cases.

中文翻译：

各向异性聚丙烯的单轴和双轴响应

讨论了单轴和双轴各向异性聚丙烯的响应。开发了一个 3D 弹-粘塑性本构模型来解释材料的各向异性。著名的 Hill 各向异性屈服准则与 Eyring 关系相结合，并在有限元框架中实施，以模拟聚合物在单轴加载期间的响应。相关的粘塑性流动规则描述了粘塑性流动的大小和方向，它被纳入模型以模拟复杂的载荷条件。该模型定量地捕获了给定各向异性状态和材料取向下单轴变形的屈服应力。此外，

更新日期：2020-05-29

点击分享查看原文

点击收藏

公开下载

阅读更多本刊最新论文本刊介绍/投稿指南11