An Impact Analysis of Adhesively-Bonded Single Lap Joint

J. Ocean Eng. Technol. 2010;24(1):172-177.

Lee Ju-Won,Na Won-Bae

Department of Ocean Engineering Pukyong National University,Department of Ocean Engineering Pukyong National University

단면 겹치기 접착 조인트의 충돌해석

이주원,나원배

부경대학교 해양공학과,부경대학교 해양공학과

Keywords: Impact analysis, Adhesively-bonded single lap joint, Finite element method, Von-Mises stress, Infinite boundary

핵심용어: 충격해석, 단면 겹치기 접착 조인트, 유한요소법, Von-Mises 응력, 무한경계

Abstract

This study presents an explicit dynamic analysis of an adhesively bonded single-lap joint under an impact load. The finite element software, ANSYS LS-DYNA, was used for the analysis and Von Mises stresses were obtained from the analysis. To model the adherents, solid elements were used and a rigid body was assumed for impactor modeling. Three impact heights (1 m, 5 m, and 10 m) were applied to consider different impact conditions and infinite boundary conditions were applied to the end-area of each adherent to save computational time in the analysis. In addition to investigating the stresses in the normal state, we also investigated the stresses in a damaged state (elasticity deterioration), simulated by a change in Young's modulus for 36 of the 3600 elements in the upper layer of the adhesive. The results showed that the location of damage is critical to the stress state of each layer (upper, middle, and lower).