Journal of Aerospace System Engineering (항공우주시스템공학회지)

The Society for Aerospace System Engineering (항공우주시스템공학회)
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A Study on the Failure Characteristics of Equivalent Anisotropic Composite Plates

등가 이방성 복합재 평판에 대한 파손 특성에 관한 연구

  • Yun, Jaeho (Propulsion Technology Team, Hanwha Corporation Daejeon Plant) ;
  • Kim, Hanjun (Propulsion Technology Team, Hanwha Corporation Daejeon Plant) ;
  • Kim, Yongha (School of Mechanical Engineering, Chungnam National University)
  • 윤재호 ((주)한화 방산부문 대전사업장 추진기술팀) ;
  • 김한준 ((주)한화 방산부문 대전사업장 추진기술팀) ;
  • 김용하 (충남대학교 기계공학부)
  • Received : 2022.06.29
  • Accepted : 2022.08.19
  • Published : 2022.10.31
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Abstract

This paper deals with predicting comparable mechanical properties of laminated composite plates. The stiffness of an equivalent anisotropic composite plate is derived based on classical lamination theory. A novel failure criterion is defined to describe the failure behaviour of laminated composite plates based on micro-mechanics failure criteria. Finally, the theory's validation of finite element analysis results was verified. We concluded that this theory is very suitable for failure analysis of laminated composite plates for aerospace applications due to their relative simplicity and computational efficiency.

본 논문에서는 효율적인 파손해석을 위해 등가 이방성 복합재 평판으로 가정된 복잡한 적층 패턴을 가진 복합재 적층판의 기계적 등가 물성을 예측하였다. 등가 이방성 복합재 평판의 강성은 고전적층판 이론을 기반으로 정의하였으며, 미시역학적 파손이론이 적용된 복합재 적층판의 파손 거동을 묘사할 수 있는 등가 파손방정식을 새롭게 정의하였다. 최종적으로 유한요소해석 결과와 비교하여 제안된 이론을 검증하였으며, 제안된 이론은 높은 계산 효율성과 단순성이라는 이점 때문에 항공우주분야 복합재 적층판의 파손 특성 분석에 적합하다고 판단된다.

Keywords

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