Modeling of a Three-Dimensional Spherulite Microstructure in Semicrystalline Polymers

被引：1
|
作者：
Oktay, H. Emre [1 ]
Gurses, Ercan [2 ]
机构：
[1] Middle East Tech Univ, Dept Civil Engn, Ankara, Turkey
[2] Middle East Tech Univ, Dept Aerosp Engn, Ankara, Turkey
来源：
NUMERICAL MATHEMATICS AND ADVANCED APPLICATIONS (ENUMATH 2015) | 2016年 / 112卷
关键词：
HIGH-DENSITY POLYETHYLENE; PLASTIC-DEFORMATION; TEXTURE EVOLUTION; BEHAVIOR;
D O I：
10.1007/978-3-319-39929-4_55
中图分类号：
O29 [应用数学];
学科分类号：
070104 ;
摘要：
A finite element (FE) model, that explicitly discretizes a single 3D spherulite is proposed. A spherulite is a two-phase microstructure consisting of amorphous and crystalline regions. Crystalline regions, that grow from a central nucleus in the form of lamellae, have particular lattice orientations. In the FE analyses, 8-chain and crystal viscoplasticity constitutive models are employed. Stress-strain distributions and slip system activities in the spherulite microstructure are studied and found to be in good agreement with the literature. Influences of the crystallinity ratio on the yield stress and the initial Young's modulus are also investigated.
引用
收藏
页码：567 / 575
页数：9
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