Simulation of failure in fiber-reinforced composites and polycrystalline materials: A novel anisotropic local damage approach

IF 6.3 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Composite Structures Pub Date : 2025-02-28 DOI:10.1016/j.compstruct.2025.118981

Quan Nhu Tran, Minh Ngoc Nguyen, Chanh Dinh Vuong, Tinh Quoc Bui

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引用次数: 0

Abstract

Fiber-reinforced composites (FRC) have a wide range of engineering applications in many different fields. In this study, we present a novel local continuum damage model that is able to accurately capture direction-dependent damage evolution in FRC and polycrystalline materials. The damage model employs three distinct damage variables in describing the evolution of crack in different directions: longitudinal, transverse, and shear. In addition to that the second-order structural tensor is used to represent the orientation of the fibers/cleavages inside the anisotropic materials. We further enhance our damage model by incorporating both the fracture energy and element characteristic length into the damage evolution law, which aims to alleviate the mesh sensitivity, an inherent issue of continuum damage approaches. The accuracy and performance of the developed local damage model are examined through two-dimensional crack propagation in fiber-reinforced composites and polycrystalline materials, including tensile tests on single-edge notch (SEN) and center-notch (CNT) specimens, three-point bending tests on a composite sandwich beam, tension and shear tests on polycrystalline specimens. The numerical results illustrate good agreement with experimental data and other reference solutions, highlighting the effectiveness of the damage model in capturing complex damage mechanisms and predicting failure behavior in anisotropic materials.

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来源期刊

Composite Structures 工程技术-材料科学：复合

CiteScore

12.00

自引率

12.70%

发文量

1246

审稿时长

78 days

期刊介绍： The past few decades have seen outstanding advances in the use of composite materials in structural applications. There can be little doubt that, within engineering circles, composites have revolutionised traditional design concepts and made possible an unparalleled range of new and exciting possibilities as viable materials for construction. Composite Structures, an International Journal, disseminates knowledge between users, manufacturers, designers and researchers involved in structures or structural components manufactured using composite materials. The journal publishes papers which contribute to knowledge in the use of composite materials in engineering structures. Papers deal with design, research and development studies, experimental investigations, theoretical analysis and fabrication techniques relevant to the application of composites in load-bearing components for assemblies, ranging from individual components such as plates and shells to complete composite structures.