형상비 변화에 따른 불변량과 수정계수를 사용한 적층복합판의 진동해석

Vibration Analysis of Composite Laminated Plates with Increasing Aspect Ratio by Invariant and Correction Factor

  • 박제선 (강원대학교 토목공학과) ;
  • 이정호 (강원대학교 산업기술연구소) ;
  • 홍창우 (강원대학교 산업기술연구소) ;
  • 이주형 (강원대학교 산업기술연구소)
  • 발행 : 1999.12.31

초록

Simple equations which can predict "exact" values of the natural frequency of vibration for the special orthotropic laminates are presented. Many laminates with certain orientations have decreasing values of $B_{16}$ and $B_{26}$ as the number of plies increases. Such laminates, with $D_{16}=D_{26}{\rightarrow}0$, including the laminates with anti-symmetric configurations can be solved by the same equation for the special orthotropic laminates. If the quasi-isotropic constants are used, the equations for the isotropic plates can be used. Use of some coefficients cab produce "exact" value for laminates with such configurations. Natural frequencies of the plate with varying aspect ratios is presented.

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