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April 29, 2026Engineering and Technology JournalOpen Access

Free Vibration of Sandwich Panels with Re-Entrant Auxetic Core: A Numerical and Analytical Investigations

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Authors

NANabaa Alaa AldeenSBSadeq Hussein BakhyMHMohsin N. Hamzah

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Overview

Analytical and numerical investigations reveal enhanced vibrational performance of sandwich panels with auxetic cores.

Key Points

  • The aim is to analyze the free-vibration behavior of sandwich panels with re-entrant auxetic cores using both analytical and numerical methods.
  • Constructed an analytical model based on Classical Plate Theory (CPT) for sandwich panels.
  • Validated theoretical predictions with ANSYS 2025 R1 using three-dimensional finite element simulations.
  • Compared results for varying core thicknesses and different core types.
  • Increasing core thickness from 4 mm to 12 mm resulted in a 90% increase in the fundamental natural frequency.
  • High agreement (1.27%–3.37%) observed between analytical and numerical results for core thicknesses up to 8 mm.
  • A 2.43% difference in fundamental frequency was found between auxetic and non-auxetic cores of identical density.

Cite This Study

Aldeen et al. (2026) studied this question.

synapsesocial.com/papers/69f19f74edf4b468248063cchttps://doi.org/10.30684/2412-0758.1547
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