Compression failure mechanism and progressive damage analysis of 3D woven composites

doi:10.19936/j.cnki.2096-8000.20241228.018

Abstract

Abstract: A combination of experiment and simulation was used to study the progressive damage and failure modes of 3D woven composites. The stress-strain curves of the material were obtained through the warp and weft compression test. Based on the microscopic characterization of the material, the microscopic finite element cell model was established to simulate the stress-strain response and damage mechanism. Through the comparison of simulation and experiment, it is considered that the simulation results agree well with the test results. The compressive modulus and strength of the material along the weft are higher than those along the warp. Under the weft compressive load, the main reasons for the failure of the 3D woven composite material are the crushing fracture of weft yarns and the cracking of the matrix. Under warp compressive load, warp yarns are curved yarns, which extrude the matrix and weft yarns, which easily lead to the crushing of the matrix between the yarns and produces delamination cracking.

Key words: 3D woven composite, compression performance, finite element simulation, progressive damage analysis

CLC Number:

TB332

GUO Xiumei, WANG Kun, ZHANG Nan, LI Chao, ZHOU Guangming. Compression failure mechanism and progressive damage analysis of 3D woven composites[J]. COMPOSITES SCIENCE AND ENGINEERING, 2024, 0(12): 126-133.

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