Journal of the Korean Society for Advanced Composite Structures (복합신소재구조학회 논문집)

Korean Society for Advanced Composite Structures (한국복합신소재구조학회)
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EAS Solid Element for Free Vibration Analysis of Laminated Composite and Sandwich Plate Structures

적층된 복합 및 샌드위치 판 구조의 자유진동 해석을 위한 EAS 고체 유한요소

  • Park, Dae-Yong (Bridge Engineering Team, Daelim cooperation) ;
  • Noh, Myung-Hyun (Energy Infrastructure Research Department, Steel Structure Research Division, Research Institute of Industrial Science & Technology, POSCO Global R&D Center) ;
  • Lee, Sang-Youl (Department of Civil Engineering, Andong National University)
  • 박대용 (대림사업 기술연구소 특수교량팀) ;
  • 노명현 (포항산업과학연구원 강구조연구소 에너지인프라본부) ;
  • 이상열 (안동대학교 토목공학과)
  • Received : 2012.07.27
  • Accepted : 2012.08.29
  • Published : 2012.09.30
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Abstract

This study deals with an enhanced assumed strain (EAS) three-dimensional element for free vibration analysis of laminated composite and sandwich structures. The three-dimensional finite element (FE) formulation based on the EAS method for composite structures shows excellence from the standpoints of computational efficiency, especially for distorted element shapes. Using the EAS FE formulation developed for this study, the effects of side-to-thickness ratios, aspect ratios and ply orientations on the natural frequency are studied and compared with the available elasticity solutions and other plate theories. The numerical results obtained are in good agreement with those reported by other investigators. The new approach works well for the numerical experiments tested, especially for complex structures such as sandwich plates with laminated composite faces.

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References

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