Original scientific paper

THE INFLUENCE OF GEOMETRIC PARAMETERS AND MECHANICAL PROPERTIES OF ADHESIVE ON STRESS ANALYSIS IN ADHESIVELY BONDED ALUMINUM SINGLE LAP JOINT

Mojtaba Samaei ; Department of Mechanical Engineering, Shabestar Branch, Islamic Azad University, Shabestar, Iran
Mostafa Seifan ; School of Mechanical Engineering, University of Guilan, Rasht, Iran
Amir Afkar ; Faculty of Electrical, Mechanical and Construction Engineering, Department of Automotive Engineering, Standard Research Institute (SRI), Karaj, Iran; School of Automotive Engineering, Iran University of Science and Technology, Tehran, Iran
Amin Paykani ; Department of Mechanical Engineering, Parand Branch, Islamic Azad University, Parand, Iran

Abstract

The aim of this study was to investigate adhesively bonded joints, and the influence of geometric parameters and mechanical properties of the adhesive in single lap aluminum structures under tensile load. A finite element model has been constructed in the ANSYS FE package and the effects of adhesive thickness, rigidity, strength and geometry have been studied in order to adjust peel stress. Various paths have been defined and obtained along the length of the adhesive and aluminum joint overlap. The results indicate that by increasing the adhesive thickness, the stress concentration decreases in the areas prone to yielding if a flexible adhesive is used instead of a rigid one, and effective stresses along the overlap length are also reduced. In addition, for a given tensile force, three different adhesive area geometries are defined. Considering the variation of peel and shear stress along the corners, the amount of adhesive used according to the introduced geometries is saved without sacrificing joint strength.

Keywords

adhesive bonding; single lap aluminum joint; stress concentration; peel and shear stress

Hrčak ID:

116195

URI

https://hrcak.srce.hr/116195

Publication date:

13.2.2014.

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