INVESTIGATION ON VOID EFFECT ON SHEAR STRESS FIELD IN BONDED STEPPED-LAP JOINT

Authors

  • BEHNAM GHODDOUS
  • MOHAMAD SHISHEHSAZ

Keywords:

SHEAR STRESS, ADHESIVE JOINT, STEPPED-LAP, FINITE ELEMENT, VOID

Abstract

IN THIS PAPER, AN ADHESIVELY-BONDED STEPPED-LAP JOINT SUFFERING FROM A VOID WITHIN ITS ADHESIVE LAYER IS INVESTIGATED. THE VOID SEPARATES THE LAYER INTO TWO SECTIONS. THE JOINT IS UNDER TENSILE LOAD AND THE MATERIALS ARE ISOTROPIC AND ASSUMED TO BEHAVE AS LINEAR ELASTIC. CLASSICAL ELASTICITY THEORY IS USED TO DETERMINE SHEAR STRESS DISTRIBUTION IN THE SEPARATED SECTIONS OF ADHESIVE LAYER ALONG THE OVERLAP LENGTH. SET OF DIFFERENTIAL EQUATIONS WAS DERIVED AND SOLVED BY USING APPROPRIATE BOUNDARY CONDITIONS. FINITE ELEMENT SOLUTION WAS USED AS THE SECOND METHOD TO VERIFY THE OBTAINED RESULTS BY ANALYTICAL METHOD. A TWO-DIMENSIONAL MODEL WAS CREATED IN ANSYS AND MESHED BY PLANE ELEMENTS. A GOOD AGREEMENT WAS OBSERVED BETWEEN TWO METHOD OF SOLUTIONS. RE-SULTS REVEALED THAT STEPPED-LAP JOINT HAD A BETTER PERFORMANCE IN STRESS DISTRIBUTION WITH VOID RATHER THAN SINGLE-LAP AND DOUBLE-LAP JOINTS

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Published

2015-11-09

Issue

Vol. 13 No. 2 (2016)

Section

Articles

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