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End-Shape Effect for Stress Concentration Reduction of Composite Single-Lap Bonded Joint

끝단형상에 따른 복합소재 단일겹치기 체결부의 응력집중 저감에 관한 연구

  • Kim, Jung-Seok (Railway Structure Department, Korea Railroad Research Institute) ;
  • Hwang, Jae-Yeon (Railway Structure Department, Korea Railroad Research Institute)
  • 김정석 (한국철도기술연구원 철도구조연구실) ;
  • 황재연 (한국철도기술연구원 철도구조연구실)
  • Received : 2010.11.10
  • Accepted : 2011.01.10
  • Published : 2011.03.01

Abstract

We evaluated the stress-reduction effect for different shapes of a composite adherend with or without a spew fillet. Six different single-lap joint specimens were modeled and assessed using nonlinear finite element analysis. Moreover, we investigated the effect of the stiffness ratio of the adherend and adhesive. The single-lap joint with normal tapering had the highest stress values, and the single-lap joint with reverse tapering and a spew fillet had the lowest stress values. The composite adherends with higher stiffness had lower stress values, and the adhesives with lower stiffness had lower stress values.

Keywords

End Shape;Composite;Stress Concentration;Bonded Joint

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