Steel and Composite Structures

  • 제28권1호
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  • Pages.25-37
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  • 2018
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  • 1229-9367(pISSN)
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  • 1598-6233(eISSN)
테크노프레스 (Techno-Press)
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DOI QR코드

DOI QR Code

Stability of tow-steered curved panels with geometrical defects using higher order FSM

  • Fazilati, Jamshid (Aeronautical Science and Technology Department, Aerospace Research Institute)
  • 투고 : 2018.02.24
  • 심사 : 2018.04.11
  • 발행 : 2018.07.10
⟨ 이전 논문 다음 논문 ⟩

초록

For the first time, the parametric instability characteristics of tow-steered variable stiffness composite laminated (VSCL) cylindrical panels is investigated using B-spline finite strip method (FSM). The panel is considered containing geometrical defects including cutout and delamination. The material properties are assumed to vary along the panel axial length of any lamina according to a linear fiber-orientation variation. A uniformly distributed inplane longitudinal loading varies harmoni-cally with time is considered. The instability load frequency regions corresponding to the assumed in-plane parametric load-ing is derived using the Bolotin's first order approximation through an energy approach. In order to demonstrate the capabili-ties of the developed formulation in predicting stability behavior of the thin-walled VSCL structures, some representative results are obtained and compared with those in the literature wherever available. It is shown that the B-spline FSM is a proper tool for extracting the stability boundaries of perforated delaminated VSCL panels.

키워드

참고문헌

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