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2015 Vol.28, Issue 5 Preview Page
Reduction of Free Edge Peeling Stress in Composite Laminates under Bending Load

굽힘하중이 가해지는 복합재 평판 자유단에서의 박리응력 감소 연구

Jung Seok-Joo
,
Sung Myung-Kyun
,
Kim Heung Soo†*
Department of Mechanical Engineering
Department of Mechanical Engineering
Department of Mechanical, Robotics and Energy Engineering

• 본 논문에 대한 토의를 2015년 10월 30일까지 학회로 보내주시면 2015년 12월호에 토론결과를 게재하겠습니다.

*Corresponding Author : heungsoo@dgu.edu
2015. pp. 497-502
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Abstract

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 적층판보다 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
자유단, 복합재, 박리응력, 압전 작동기
free-edge, composite laminate, peeling stress, piezoelectric actuator
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Information
  • Publisher :Computational Structural Engineering Institute of Korea
  • Publisher(Ko) :한국전산구조공학회
  • Journal Title :Journal of the Computational Structural Engineering Institute of Korea
  • Journal Title(Ko) :한국전산구조공학회 논문집
  • Volume : 28
  • No :5
  • Pages :497-502
  • Received Date : 2015-05-01
  • Revised Date : 2015-06-18
  • Accepted Date : 2015-08-12
  • DOI :https://doi.org/10.7734/COSEIK.2015.28.5.497
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