Impact analysis of fiber-reinforced composites based on elasto-plastic constitutive law

被引：5
|
作者：
Joo, Ki Ho [1 ]
Ryou, Hansun [1 ]
Chung, Kwansoo [1 ]
Kang, Tae Jin [1 ]
机构：
[1] Seoul Natl Univ, Sch Mat Sci & Engn, Seoul 151744, South Korea
来源：
JOURNAL OF COMPOSITE MATERIALS | 2007年 / 41卷 / 25期
关键词：
modified Drucker-Prager yield criterion; elasto-plastic constitutive law; anisotropic back-stress evolution rule; 3D braided composites; low velocity impact;
D O I：
10.1177/0021998307082177
中图分类号：
TB33 [复合材料];
学科分类号：
摘要：
Impact analysis of 3D braided composites and laminated plane woven fabric composites was performed using the elasto-plastic constitutive law to describe the nonlinear, anisotropic and asymmetric properties of fiber-reinforced composites. As for the yield criterion, the modified Drucker-Prager yield criterion was utilized to represent the anisotropic and asymmetric properties, while the anisotropic hardening was described based on the kinematic hardening with the anisotropic evolution of the back-stress. Experiments to obtain the material parameters of the proposed constitutive law were also carried out based on uni-axial tension and compression tests for fiber-reinforced composites. Then, the proposed constitutive law was implemented into a finite element code and was verified by comparing the finite element simulation of the impact tests with experiments. In addition, impact performance of the braided composites and laminated composites was also compared with each other.
引用
收藏
页码：2985 / 3006
页数：22
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