Journal of KSNVE (소음진동)

The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
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Dynamic Characteristics of Composite Plates Based On a Higher Order Theory Under Low-Velocity Impact

저속 충격시 고차이론을 이용한 복합 재료 판의 동적 특성

  • 심동진 (서울대학교 대학원 항공우주공학과) ;
  • 김지환 (서울대학교 공과대학 항공우주공학과)
  • Published : 1998.02.01
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Abstract

The dynamic response of symmetric cross-ply and angle-ply composite laminated plates under impact loads is investigated using a higher order shear deformation theory. A modified Hertz law is used to predict the impact loads and a four node finite element is used to model the plate. By using a higer order shear deformation theory, the out-of-plane shear stresses, which can be a crucial factor in the failure of composite plates, are determined with significant accuracy. This is accomplished by using a stress recovery technique using the in-plane stresses. The results compared with previous investigations showed good agreement. It can be seen that this method of analyzing impact problems is more efficient than current three dimensional methods in terms of time and expense.

Keywords

References

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