Structural Engineering and Mechanics

  • 제34권2호
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  • Pages.175-188
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  • 2010
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  • 1225-4568(pISSN)
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  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
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DOI QR코드

DOI QR Code

Postbuckling response and failure of symmetric laminated plates with rectangular cutouts under in-plane shear

  • Singh, S.B. (Department of Civil Engineering, Birla Institute of Technology and Science) ;
  • Kumar, Dinesh (Department of Mechanical Engineering, Birla Institute of Technology and Science)
  • 투고 : 2009.06.24
  • 심사 : 2009.10.20
  • 발행 : 2010.01.30
⟨ 이전 논문 다음 논문 ⟩

초록

This paper deals with the buckling and postbuckling responses, and the progressive failure of square laminates of symmetric lay-up with a central rectangular cutout under in-plane shear load. A detailed investigation is made to show the effects of cutout size and cutout aspect ratio on the buckling and postbuckling responses, failure loads and failure characteristics of $(+45/-45/0/90)_{2s}$, $(+45/-45)_{4s}$ and $(0/90)_{4s}$ laminates. The 3-D Tsai-Hill criterion is used to predict the failure of a lamina while the onset of delamination is predicted by the interlaminar failure criterion. In addition, the effects of boundary conditions on buckling loads, failure loads, failure modes, and maximum transverse deflection for a $(+45/-45/0/90)_{2s}$ laminate with and without a square cutout have been presented. It is concluded that because of early onset of delamination at the net section of cutouts before first-ply failure, total strength of the laminate with very small cutouts can not be utilized.

키워드

참고문헌

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피인용 문헌

  1. Effects of Boundary Conditions on Postbuckling Strengths of Composite Laminate with Various Shaped Cutouts under In-Plane Shear vol.03, pp.02, 2013, https://doi.org/10.4236/ojcm.2013.32006
  2. Nonlinear spectral collocation analysis of imperfect functionally graded plates under end-shortening vol.66, pp.5, 2010, https://doi.org/10.12989/sem.2018.66.5.557