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Parametric effects on geometrical nonlinear dynamic behaviors of laminated composite skew plates

적층된 복합소재 경사판의 기하학적 비선형 동적 거동에 미치는 매개변수 영향

  • 이상열 (안동대학교 토목공학과)
  • Received : 2012.11.12
  • Accepted : 2012.12.18
  • Published : 2012.12.31

Abstract

This study investigates a geometrical nonlinear dynamic behaviors of laminated skew plates made of advanced composite materials (ACM). Based on the first-order shear deformation plate theory (FSDT), the Newmark method and Newton-Raphson iteration are used for the nonlinear dynamic solution. The effects of cutout sizes, skew angles and lay up sequences on the nonlinear dynamic response for various parameters are studied using a nonlinear dynamic finite element program developed for this study. The several numerical results were in good agreement with those reported by other investigators for square composite plates with or without central cutouts, and the new results reported in this paper show the significant interactions between the cutout, skew angles and layup sequence in the laminate. Key observation points are discussed and a brief design guideline of skew laminates is given.

Acknowledgement

Supported by : 한국연구재단

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