Acta Mechanica Slovaca 2025, 29(2):6-13 | DOI: 10.21496/ams.2025.005

Novel Geometric Shape to Enhance Bending Resistance in Sandwich Panels: Core Optimization

Habib Achache1, Rachid Zahi2, *, Bachir Bachir Bouiadjra1, Djaafar Ait Kaci3, Ali Benouis4
1 Institute of Maintenance and Industrial Safety, University of Oran 2 Mohamed Ben Ahmed, B.P 1015 El M'naouer Oran 31000, Algeria, Laboratory of Physical Mechanics of Materials Sidi Bel Abbes, Algeria
2 Relizane University, Cité Bourmadia, BP 48000, Relizane, Algeria
3 Department of Mechanical Engineering, University of Djillali Liabes Sidi Bel Abbes, 22000, Algeria
4 Faculty of technology, University of Dr Moulay Tahar, Saida BP138 Saida 20000, Algeria

The mechanical strength of a sandwich composite material is determined by the interaction between its two outer plates and core structure. This study aims to optimize the geometric and mechanical properties of a sandwich composite through a systematic approach using three-dimensional finite element modeling (FEM) combined with the design of experiments (DOE). Three core geometries (square, hexagon, and square-circle) were evaluated to identify the configuration that maximizes load-bearing capacity while minimizing displacement under stress. Each configuration was tested with various fibre orientations (0°, 45°, and 90°) and composite materials (glass/epoxy, boron/epoxy, and graphite/epoxy) in the laminate plates. The results indicate that the square-circle core design, particularly when combined with boron/epoxy plates at a 0° fibre orientation, achieves the highest force resistance with minimal deformation. This optimized configuration provides a robust framework for applications requiring enhanced structural durability, making it a valuable approach for industries such as aerospace, automotive, and civil engineering.

Keywords: displacement; fibre orientation; finite element method; honeycomb; optimization and sandwich structure.

Received: July 18, 2024; Revised: November 12, 2024; Accepted: April 23, 2025; Published: June 10, 2025  Show citation

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Achache, H., Zahi, R., Bouiadjra, B.B., Kaci, D.A., & Benouis, A. (2025). Novel Geometric Shape to Enhance Bending Resistance in Sandwich Panels: Core Optimization. Acta Mechanica Slovaca, 29(2), 6-13. doi: 10.21496/ams.2025.005
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