Numerical Modeling of Stress Ratios in Single-Lap Adhesive Joints with Geometrical Modifications

Authors

  • Asep Kurnia Institut Teknologi Bandung Indonesia
  • Ichsan Setya Putra Institut Teknologi Bandung Indonesia
  • Hendri Syamsudin Institut Teknologi Bandung Indonesia
  • Muhamad Giri Suada Institut Teknologi Bandung Indonesia
  • Oktavianus Demas Priambudi Institut Teknologi Bandung Indonesia

DOI:

https://doi.org/10.26877/asset.v8i3.2516

Keywords:

Aluminum-epoxy composite, Benzeggagh–Kenane model, cohesive zone elements, stress ratio, numerical modeling

Abstract

This study aims to analyze the effect of variations in aluminum strip geometry and Araldite adhesive on the mechanical strength of single lap joints. A two-dimensional numerical model was developed in Abaqus/Standard using cohesive zone elements, the Benzeggagh-Kenane (B-K) model, and a quadratic stress criterion to validate the experimental results. The results show that the developed model is capable of accurately describing the stress distribution and the effect of secondary bending moments through the ratio of normal stress to shear stress. The application of chamfer geometry to the adhesive area proved to be effective in reducing secondary bending moments and increasing joint resistance. A comparison between the experimental and numerical simulation results showed a deviation of less than 15.5%, confirming the validity of this model. This study highlights the importance of geometric optimization in improving the mechanical strength and reliability of adhesive joints.

Author Biographies

  • Asep Kurnia, Institut Teknologi Bandung
    Post Graduate Study, Faculty of Mechanical and Aerospace Engineering, Institut Teknologi Bandung, Ganesa Street No. 10, Bandung 40132, Indonesia
  • Ichsan Setya Putra, Institut Teknologi Bandung

    Solid Mechanics and Lightweight Structure Research Group, Faculty of Mechanical and Aerospace Engineering, Institut Teknologi Bandung, Ganesa Street No. 10, Bandung 40132, Indonesia

  • Hendri Syamsudin, Institut Teknologi Bandung

    Solid Mechanics and Lightweight Structure Research Group, Faculty of Mechanical and Aerospace Engineering, Institut Teknologi Bandung, Ganesa Street No. 10, Bandung 40132, Indonesia

  • Muhamad Giri Suada, Institut Teknologi Bandung

    Solid Mechanics and Lightweight Structure Research Group, Faculty of Mechanical and Aerospace Engineering, Institut Teknologi Bandung, Ganesa Street No. 10, Bandung 40132, Indonesia

  • Oktavianus Demas Priambudi, Institut Teknologi Bandung
    Undergraduate Study, Faculty of Mechanical and Aerospace Engineering, Institut Teknologi Bandung, Ganesa Street No. 10, Bandung 40132, Indonesia

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Published

2026-07-24

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Vol. 8 No. 3 (2026): May - July

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