Analysis of factors influencing lap-shear strength of adhesive-bonded joint based on response surface method

作者：Yang, Sa; Zhang, Yan Song^*

来源：Journal of Shanghai Jiaotong University, 2015, 49(10): 1487-1491.

DOI：10.16183/j.cnki.jsjtu.2015.10.010

• Adhesive bonded joints
• Adhesive strength
• Bondline thickness
• Geometrical property
• Lap shear strength
• Linear relationships
• Response surface method
• Strength

As for the adhesive-bonded joints during carbody assembly, material attributes and geometrical properties of the adhesive and steel sheet (e.g. adhesive type, bondline thickness/width, steel grade, steel gage etc.) would strongly influence the joint strength. In this paper, a finite element model of lap-sheared adhesive-bonded joint was established to estimate the maximum stress in the adhesive layer. Moreover, a mathematical model between the properties of adhesive and steel sheet and the maximum stress in the adhesive layer was built to quantitatively analyze the effect of those factors on joint strength. The results showed that the steel gage was negatively related to the maximum stress in the adhesive layer. The critical values of bondline thickness and steel grade resulting in a minimum stress in the adhesive layer were determined as well. Furthermore, a linear relationship was observed between the adhesive strength and the maximum stress in the adhesive. The slope was collectively affected by the steel gage, bondline thickness and adhesive strength.

• 出版日期2015
• 单位上海交通大学