期刊
出版社
SAGE PUBLICATIONS LTD
DOI: 10.1177/14644207221105883
关键词
Composite structures; Kevlar fiber; compressive load; three-point bending load; finite element analysis
This research experimentally and numerically investigates the flexural and compressive strength of Kevlar fiber composite sandwich panels with a novel lattice core. Finite element analysis is used to simulate the mechanical behavior of the panels, and the effect of polyurethane foam on the panels' strength and energy absorption capacity is studied.
The present research has addressed the flexural and compressive strength of Kevlar fiber composite sandwich panels with novel lattice core, experimentally and numerically. The composite sandwich panels and corrugated cores have been made using the vacuum-assisted resin transfer molding method. Afterward, compressive and three-point bending loads were applied to the composite sandwich panels to determine mechanical performance during structural deformation. Scanning electron microscopy has been conducted on the specimens to evaluate the Kevlar-fiber distribution. In order to evaluate the experimental results, the corresponding testing process has been numerically simulated through finite element analysis. It has been figured out that the simulated model can predict the force-displacement response of the considered sandwich panels under bending and compressive loads. Finally, the effect of polyurethane foam on the composite sandwich panel's mechanical strength and energy absorption capacity has been investigated.
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