Stress Distribution Properties in Adhesively Bonded Beams

Abstract:

The stress distribution properties in a single lap-jointed cantilevered adhesive beam have been investigated using three dimensional finite element methods. Finite element solutions of the stress distributions in the adhesive layer have been obtained for three typical boundary conditions. It was found that the stress concentrations are confined to a very small region near the free ends of interfaces between the adherend and the adhesive layer while the centre region of the adhesive layer is mostly stress-free. This suggests that the first failure may be expected at the free ends of interfaces between the adherend and the adhesive layer. This also implies that the adhesive material near the free ends of the adhesive layer is mainly bearing the load being transferred through the adhesive joint. The analysis results show that by choosing suitable boundary condition, the bending effect can be reduced and the strength, fatigue life and reliability of the bond can be improved.

• Periodical: Applied Mechanics and Materials (Volumes 556-562)
• Pages: 720-724
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.556-562.720
• Online since: May 2014
• Authors: Xiao Cong He*, Yu Qi Wang, Hua Ying Cun, Sheng Wan Yuan
• Keywords: Adhesively Bonded Beam, Boundary Condition, Finite Element Analysis (FEA), Stress Distribution

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