Title: Research on bonding damage of composite materials adhesive structures

Authors: JiaRu Shao; Niu Liu; ZiJun Zheng

Addresses: College of Mechanical Engineering, Chongqing University of Technology, Chongqing, Chongqing, 400000, China ' College of Mechanical Engineering, Chongqing University of Technology, Chongqing, Chongqing, 400000, China ' College of Mechanical Engineering, Chongqing University of Technology, Chongqing, Chongqing, 400000, China

Abstract: In this paper, continuum damage mechanics (CDM) and the 3D Hashin criterion are implemented to simulate the formation and evolution of the intra-laminar damage. The cohesive layer was simulated by the cohesive zone model (CZM). The finite element method (FEM) results are consistent with the experimental results, which validate the effectiveness of the FEM. Then, different types of adhesively bonded single-lap joints (SLJs) are analysed. The results suggest that the 0º and 90º plies can improve the failure loads of SLJs. The ±45º plies are beneficial for alleviating the damage to the adhesive layer. The increase in overlap width has less influence on the damage location and damage modes. Matrix damage and delamination, with less fibre damage, are the main damage modes of SLJs with lower adherend thickness. With the thickness of the adherend increasing, matrix damage and delamination take up an increasingly smaller proportion.

Keywords: composite materials; adhesive connection; fibre damage; matrix damage; adhesive damage; finite element method.

DOI: 10.1504/IJCSM.2024.136817

International Journal of Computing Science and Mathematics, 2024 Vol.19 No.1, pp.39 - 52

Accepted: 05 May 2023
Published online: 22 Feb 2024 *