Proceedings of the Korean Society For Composite Materials Conference (한국복합재료학회:학술대회논문집)

The Korean Society for Composite Materials (한국복합재료학회)
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Parametric Study on the Joint Strength of Unidirectional and Fabric Hybrid Laminate

일방향-평직 복합재 혼합 적층판의 기계적 체결부 강도에 관한 인자연구

  • 안현수 (경상대학교 대학원 항공공학과) ;
  • 신소영 (경상대학교 대학원 항공공학) ;
  • 권진회 (경상대학교 항공기부품기술연구센) ;
  • 최진호 (경상대학교 항공기부품기술연구센) ;
  • 이상관 (한국기계연구) ;
  • 양승운 (한국항공우주산업(주))
  • Published : 2002.05.01
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Abstract

A parametric study has been conducted to investigate the effect of the geometry on the strength of an unidirectional and fabric hybrid laminated composite joint. Tests are conducted for the specimens with nine different edge-to-hole diameter or width-to-hole diameter ratios. For the finite element analysis, the characteristic length method is used, and the tests for determining the characteristic length are performed additionally. Nonlinear contact problem between the pin and laminate is modeled by the gap element in MSC/NASTRAN. Tsai-Wu failure criteria is applied to the stress on the characteristic curve. The finite element and experimental results shows good agreement in strength of composite joint. Results of the parametric study shows the effect of the geometry is remarkable in the specimens with width-to-hole diameter ratio less than 2.8 and edge-to-hole diameter ratio less than 1.4.

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