Three-point bending behaviors of the foam-filled CFRP X-core sandwich panel: Experimental investigation and analytical modelling

To enhance the energy absorption capacity of the sandwich structures, the foam filled composite X-core sandwich panels were fabricated by a hot-press molding technology. The bending behaviors of the empty and hybrid composite sandwich panels were investigated by the three-point bending tests. Analyt...

Full description

Saved in:
Bibliographic Details
Published in:Composite structures 2022-03, Vol.284, p.115206, Article 115206
Main Authors: Mei, Jie, Liu, Jiayi, Huang, Wei
Format: Article
Language:English
Subjects:
Analytical modelling
Bending properties
Foam filled sandwich panel
Mechanical tests
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:To enhance the energy absorption capacity of the sandwich structures, the foam filled composite X-core sandwich panels were fabricated by a hot-press molding technology. The bending behaviors of the empty and hybrid composite sandwich panels were investigated by the three-point bending tests. Analytical models and finite element models were developed to characterize the bending behaviors and the interaction effect between the foams and composite members. Generally, the specific bending modulus and strength of composite X-core sandwich structures are comparable to that of the competing cellular structures. The theoretical expressions can provide useful predictions of the bending stiffness and initial failure load, whilst the numerical models had a higher accuracy. A failure mechanism map was constructed to highlight the effect of geometry parameters on the failure modes. A minimum weight design was employed to provide a guideline for obtaining the weight-efficient hybrid composite sandwich panels.
ISSN:0263-8223
1879-1085
DOI:10.1016/j.compstruct.2022.115206