Research on failure modes and ultimate strength behavior of typical sandwich composite joints for ship structures

International Journal of Naval Architecture and Ocean Engineering

Kai Qin¹  Qin Dong¹  Geng Xu²  Renjun Yan³ 

[1] Corresponding author.;Key Laboratory of High Performance Ship Technology (Wuhan University of Technology), Ministry of Education, Wuhan, China;School of Naval Architecture, Ocean and Energy Power Engineering, Wuhan University of Technology, Wuhan, China;

关键词: Sandwich composite materials;    Failure criteria;    Cohesive zone model;    Adhesive interface;   

DOI  :  

来源: DOAJ

【 摘 要 】

This paper presents an experimental and numerical investigation on failure behavior and ultimate strength of fiber-reinforced sandwich composite structures. Tests were conducted on the sandwich L-joints with Glass Fiber-Reinforced Polymer (GFRP) face sheet and Polyvinyl chloride (PVC) foam core. In the numerical simulation, a progressive damage method is established to simulate the strength and failure behavior of sandwich L-joint, different failure criteria are used to deal with the various failure modes of GFRP laminates. Cohesive zone model and viscoelastic material model are combined to model the face-core adhesive interface, hence the influence of fracture and debonding of adhesive to the total strength of sandwich joints is considered by the numerical modelling. On the base of these theories, the finite element model of sandwich L-joint has been successfully established, and the numerical predictions present a good agreement with the test results on both structural strength and failure process.

【 授权许可】

Unknown