Composites Research

  • 제21권4호
  • /
  • Pages.22-28
  • /
  • 2008
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  • 2288-2103(pISSN)
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  • 2288-2111(eISSN)
한국복합재료학회 (The Korean Society for Composite Materials)
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파손영역비를 이용한 복합재 접착 체결부의 파손강도 예측

Failure Load Prediction of the Composite Adhesive Joint Using the Damage Zone Ratio

  • 이영환 (한양대학교 기계공학과 대학원) ;
  • 반창수 (경상대학교 기계항공공학부 항공기부품기술연구소) ;
  • 최진호 (경상대학교 기계항공공학부 항공기부품기술연구소) ;
  • 권진회 (경상대학교 기계항공공학부 항공기부품기술연구소)
  • 발행 : 2008.08.31
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초록

복합재료 체결부는 전체 복합재 구조물의 성능을 결정하는 중요한 부분이므로, 체결부에 대한 해석과 강도평가는 매우 중요하다. 본 논문에서는 복합재 접착 체결부의 강도를 실험적으로 평가하고 분석하였으며, 구조해석으로 평가한 체결부의 강도와 상호 비교하였다. 접착 체결부의 강도예측을 위하여 최대 변형률 이론과 파손영역 이론을 사용하였으며, 비선형 유한요소 해석을 통해 제안된 파손영역비를 기준으로 접착 체결부의 파손강도를 예측할 결과, 최대 22.2% 범위 내에서 파손강도를 예측할 수 있었다.

The composite joint has become an important research area because the structural efficiency of a structure with a joint is determined by its joints rather than by its basic structure since the joints are often the weakest areas in composite structures. In this paper, the strengths of adhesive joints consisting of metal and composites were predicted and tested by the maximum strain theory and damage zone theory. Nonlinear finite element analyses of adhesive Joints considering the material nonlinearity of the adhesive layer were performed. From the tests and analyses, the strengths of the adhesive joints could be predicted to within 22.2% using the damage zone ratio.

키워드

참고문헌

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