The carrying capability of adhesive double-lap composite joint and the adhesive layer deformation

doi:10.19936/j.cnki.2096-8000.20221128.006

Abstract

Abstract: The carrying capability calculation formula of adhesive double-lap composite joint has limitation, which could not completely describe the relationship between the adhesive thickness and the carrying capability. It is believed generally that the reason are defects and peel effect. Based on the existing test data, we contrastively analyzed the shear deformation and peel deformation of adhesive layer along the overlap length in the joint for different adhesive thicknesses. It is found that the carrying capability decreases, the shear deformation and peel deformation decrease along with the adhesive thickness increase. Also no peel damage and obvious defect was found. The deduction is put forwards that the main reason for the discrepancy between theory and practice is the change of the adhesive layer shearing strain energy density for controlling the adhesive thickness, and it was preliminary proved by 5 groups contrast experiments.

Key words: adhesive joint, adhesive thickness, shearing strain, peel deformation, shearing strain energy density

CLC Number:

TB332

MA Yu, MA Bin, CHEN Xi-rui. The carrying capability of adhesive double-lap composite joint and the adhesive layer deformation[J]. COMPOSITES SCIENCE AND ENGINEERING, 2022, 0(11): 43-48.

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