A combined elastoplastic damage model for progressive failure analysis of composite materials and structures

被引:134
作者
Chen, J. F. [1 ]
Morozov, E. V. [1 ]
Shankar, K. [1 ]
机构
[1] Univ New S Wales, Sch Engn & Informat Technol, Canberra, ACT, Australia
关键词
Combined elastoplastic damage model; Progressive failure analysis; Plasticity effects; Composite materials; Return mapping algorithm; FIBER-COMPOSITES; PART I; LAMINATED COMPOSITES; INELASTIC BEHAVIOR; CONSTITUTIVE MODEL; AS4/PEEK COMPOSITE; GRAPHITE EPOXY; COMPRESSION; STRESS; SHEAR;
D O I
10.1016/j.compstruct.2012.04.021
中图分类号
O3 [力学];
学科分类号
08 ; 0801 ;
摘要
The paper is concerned with the development and verification of a combined elastoplastic damage model for the progressive failure analysis of composite materials and structures. The model accounts for the irreversible strains caused by plasticity effects and material properties degradation due to the damage initiation and development. The strain-driven implicit integration procedure is developed using equations of continuum damage mechanics, plasticity theory and includes the return mapping algorithm. A tangent operator consistent with the integration procedure is derived to ensure a computational efficiency of the Newton-Raphson method in the finite element analysis. The algorithm is implemented in Abaqus as a user-defined subroutine. The efficiency of the constitutive model and computational procedure is demonstrated using the analysis of the progressive failure of composite laminates containing through holes and subjected to in-plane uniaxial tensile loading. It has been shown that the predicted results agree well with the experimental data reported in the literature. (C) 2012 Elsevier Ltd. All rights reserved.
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页码:3478 / 3489
页数:12
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