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Purpose <p>In this paper, the dynamic response characteristics of laminated composite rectangular sandwich plates with different lattice truss cores are presented by applying a semi-analytical method.</p> Method <p>The rectangular sandwich plate is modeled in such a way that the laminated composite plates are tightly bonded above and below the lattice truss core. In the practical analysis, the lattice truss core&#xa0;is modeled as an equivalent layer with uniform material properties. To model arbitrary boundary conditions, a virtual-stiffness technique is employed and the Legendre polynomial is set as a shape function&#xa0;for all displacements. By employing the Ritz method, the vibration equation of laminated composite sandwich plate with a lattices truss core under arbitrary boundary conditions are derived directly without&#xa0;the need to change the shape functions.</p> Results <p>The reliability and accuracy of presented method are verified with the FEM and literature results. The dynamic response results of laminated composite sandwich plates with lattice truss core are&#xa0;reported through numerical examples, and these results can be provided as a reference for researchers working in a similar field of research.</p>

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Dynamic Response Analysis of Laminated Composite Sandwich Plate with Different Lattices Truss Core Using a Semi-Analytical Method

  • 期刊论文

  • 发表日期：

    2025年7月23日

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  • Kwanghun Kim,
  • Nam Kim,
  • U. Juhyok,
  • Songchol Jo,
  • Kumsun Sin,
  • Kwanghyok Kim

摘要

Purpose

In this paper, the dynamic response characteristics of laminated composite rectangular sandwich plates with different lattice truss cores are presented by applying a semi-analytical method.

Method

The rectangular sandwich plate is modeled in such a way that the laminated composite plates are tightly bonded above and below the lattice truss core. In the practical analysis, the lattice truss core is modeled as an equivalent layer with uniform material properties. To model arbitrary boundary conditions, a virtual-stiffness technique is employed and the Legendre polynomial is set as a shape function for all displacements. By employing the Ritz method, the vibration equation of laminated composite sandwich plate with a lattices truss core under arbitrary boundary conditions are derived directly without the need to change the shape functions.

Results

The reliability and accuracy of presented method are verified with the FEM and literature results. The dynamic response results of laminated composite sandwich plates with lattice truss core are reported through numerical examples, and these results can be provided as a reference for researchers working in a similar field of research.