Optimum design for double-lap bolted composite joints using a genetic algorithm

V. Kradinov, A. Barut, E. Madenci, D. R. Ambur

Research output: Contribution to journalConference article

1 Scopus citations

Abstract

This study demonstrates the application of the Genetic Algorithm (GA) to achieve an optimal double-lap bolted joint design with composite laminates. Bolt diameters and the spacing between the bolts along the length and width directions of the joint are considered as design variables. The contact stresses (bolt loads) are determined by a combined complex potential and variational formulation. In this formulation, the equilibrium equations are satisfied exactly and the boundary conditions are enforced by minimizing the total potential. The contact stresses, as well as the contact region, are determined through an iterative procedure as part of a solution method that accounts for the effects of finite geometry and by-pass loading. Failure stress and its mode are predicted by employing the point stress criterion, thus providing the means for the evaluation function necessary in the application of the GA.

Original languageEnglish (US)
Pages (from-to)2307-2312
Number of pages6
JournalCollection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
Volume4
StatePublished - Jan 1 2001
Event42nd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, amd Materials Conference and Exhibit Technical Papers - Seattle, WA, United States
Duration: Apr 16 2001Apr 19 2001

ASJC Scopus subject areas

  • Architecture
  • Materials Science(all)
  • Aerospace Engineering
  • Mechanics of Materials
  • Mechanical Engineering

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