期刊
JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY
卷 27, 期 16, 页码 1811-1827出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/01694243.2012.761926
关键词
epoxy; steel; single lap joint; bending; finite element analysis; analytical model
资金
- Needham Cooper Foundation
Four-point bend tests were performed on single lap joints with hard steel adherends and a structural epoxy adhesive. The effect of the overlap, the adherend thickness and the adhesive thickness was studied. It was found that the length of the overlap has no significant effect on the strength of the joints. This is because the load transfer is occurring in a very localised area around the edges of the overlap, being the failure governed by peel mechanisms. The thickness of the adherends strongly affects the strength of the joints. The thicker the adherend, the stronger is the joint. The experimental results are compared with a finite element model and reinforce the fact that the failure takes place due to local strains at the ends of the overlap in tension. An analytical model is also given to predict in a simple but effective way the joint strength and its dependence on the adherend thickness.
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