Progressive damage and failure analysis of three-dimensional braided composites under multiaxial loadings

被引：12
作者：
Hu, Xinyu [1 ,2 ]
He, Chunwang [1 ,2 ]
Ge, Jingran [1 ,2 ]
Zhang, Qi [1 ,2 ]
Liang, Jun [1 ,2 ]
机构：
[1] Beijing Inst Technol, Inst Adv Struct Technol, Beijing 100081, Peoples R China
[2] Beijing Key Lab Lightweight Multifunct Composite M, Beijing 100081, Peoples R China
来源：
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES | 2022年 / 254卷
基金：
中国国家自然科学基金;
关键词：
Composite materials; Elastic plastic; Failure; Multiaxial stress spaces; BOUNDARY-CONDITIONS; MODEL; STRENGTH; BEHAVIOR; PREDICTION; CRITERIA;
D O I：
10.1016/j.ijsolstr.2022.111853
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
A meso-mechanical computational model based on the finite element method (FEM) is developed to predict the progressive elastic-plastic damage and failure behavior of three-dimensional four directional (3D4D) braided composites under multiaxial loadings. Firstly, the constitutive laws for mesoscale constituents (i.e. yarn, matrix and interface) of braided representative volume element (RVE) are established and implemented by the user defined material subroutine UMAT in ABAQUS. Then, how to build the braided RVE and conduct the simulation are introduced. After that, the uniaxial tensile data is used to verify the proposed model. Finally, the damage and failure behavior of the RVE under multiaxial loadings is investigated, considering the effects of loading paths and interface. The results show that loading path and interface have little effect on the strengths. The predicted failure envelopes in different stress spaces for RVE are compared with the Tsai-Wu and Hoffman theories, which are much closer to the Tsai-Wu theory.
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页数：13
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