Numerical study of energy absorption in composite sandwich structures under low velocity impact

Authors

University of Birjand

Abstract

The aims of this research are simulating and modeling laboratory samples from other references to investigate the absorption ability of sandwich composite structures by the finite element method and validating the modeling results with laboratory ones. Structures investigated in this study are foam blocks reinforced by braided composite structures containing aramid fibers. In all samples examined, the properties of woven fabric as well as the core are the same, but there is the difference in the form of core and the number of woven composite fabric layers. In modeling laboratory samples, the destruction process of samples, force-displacement and energy-displacement curve under load impact, have been studied. As a result of this study, for each sample, including the features of degradation; energy absorption, maximum load, deformation structure, effective force, length of the sample that is almost undamaged after the test and average load experimented have been investigated and the results have been validated with the laboratory results.

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References

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Journal of Solid and Fluid Mechanics
Volume 7, Issue 1
March and April 2017
Pages 51-64

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