한국전산구조공학회논문집 (Journal of the Computational Structural Engineering Institute of Korea)

  • 제28권5호
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  • Pages.497-502
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  • 2015
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  • 1229-3059(pISSN)
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  • 2287-2302(eISSN)
한국전산구조공학회 (Computational Structural Engineering Institute of Korea)
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굽힘하중이 가해지는 복합재 평판 자유단에서의 박리응력 감소 연구

Reduction of Free Edge Peeling Stress in Composite Laminates under Bending Load

  • 정석주 (동국대학교 기계공학과) ;
  • 승명균 (동국대학교 기계공학과) ;
  • 김흥수 (동국대학교 기계로봇에너지공학과)
  • Jung, Seok-Joo (Department of Mechanical Engineering, Dongguk Univ.) ;
  • Sung, Myung-Kyun (Department of Mechanical Engineering, Dongguk Univ.) ;
  • Kim, Heung Soo (Department of Mechanical, Robotics and Energy Engineering, Dongguk Univ.)
  • 투고 : 2015.05.01
  • 심사 : 2015.08.12
  • 발행 : 2015.10.30
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⟨ 이전 논문 다음 논문 ⟩

초록

본 논문에서는 굽힘하중이 가해지는 스마트 복합재 적층판의 자유단에서 발생하는 박리응력을 압전 작동기를 이용해서 감소시키는 방법을 응력함수를 이용해 해석하는 방법을 제안하였다. 전기-기계 연성에 의해 나타나는 지배방정식은 최소 보족일의 원리를 이용해 구하였다. 응력상태는 일반적인 고유치 해석과정을 통해 구하였다. 스마트 복합재 적층판의 자유단 박리응력은 압전 작동기를 이용해 감소시킬 수 있었다. cross-ply 복합재 적층판의 박리응력 감소가 angle-ply 복합재 적층판 보다 크게 나타났다.

In this paper, a stress function-based approach was proposed to analyze the reduction of free-edge peeling stress in smart composite laminates using piezoelectric actuator under bending load. Electro-mechanically coupled governing equation was obtained by complimentary virtual work principle. The stress state was solved by the generalized eigenvalue procedure. The free-edge peeling stress of smart composite laminates was reduced by the piezoelectric actuation. The reduction rate of peeling stress in cross-ply composite laminate is larger than that in angle ply composite laminate.

키워드

참고문헌

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