Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)

The Korean Society of Mechanical Engineers (대한기계학회)
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Fatigue Analysis of Fiber-Reinforced Composites Using Damage Mechanics

손상역학을 이용한 섬유강화 복합재료의 피로해석

  • 임동민 (현대자동차 플랫폼개발팀) ;
  • 윤인수 (한국가스공사 연구개발원) ;
  • 강기원 (국민체육진흥공단 체육과학연구원) ;
  • 김정규 (한양대학교 기계공학부)
  • Published : 2006.02.01
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Abstract

Due to their intrinsic anisotropy, composite materials show quite complicated damage mechanism with their fiber orientation and stacking sequence and especially, their fatigue damage process is sequential occurrence of matrix cracking, delamination and fiber breakage. In the study, to propose new model capable of describing damage mechanism under fatigue loading, fatigue analysis of composite laminates based on damage mechanics, are performed. The average stress is disassembled with stress components of matrix, fiber and interlaminar interface through stress analysis. Each stress components are used to assess static damage analysis based on continuum damage mechanics (C.D.M.). Fatigue damage curves are obtained from hysteresis loop and assessed by the fatigue damage analysis. Then, static and fatigue damage analysis are combined. Expected results such as stress-cycle relation are verified by the experimental results of fatigue tests.

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References

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