537 多層・高次変形有限要素による積層制振材の振動減衰特性解析

概要

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A multilayer (ML) shell finite element (FE) based on the versatile higher-order-deformable (HOD) theory is developed for free vibration analysis and damping prediction of composite laminates. The developed shell element allows one to arrange through-the thickness degrees of freedom by specifying the degrees of multilayer discretization (ML, or Equivalent-single-Layer : ESL) and higher-order deformation assumptions (First-Order-Shear-Deformable : FOSD, or HOD). By comparing the numerical results of the present FEs with each other and the available experimental results, numerical accuracy of four different types of through-the-thickness DOF arrangement, that is, ESL/FOSD, ESL/HOD, ML/FOSD and ML/HOD, is investigated for free-vibration of laminates with or without constrained viscoelastic interlayers.
一般社団法人日本機械学会の論文
2002-09-13