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Validation of a 3D damage model for predicting the response of composite structures under crushing loads

journal contribution
posted on 2016-07-01, 00:00 authored by Louis Chiu, B G Falzon, B Chen, W Yan
A 3D intralaminar continuum damage mechanics based material model, combining damage mode interaction and material nonlinearity, was developed to predict the damage response of composite structures undergoing crush loading. This model captures the structural response without the need for calibration of experimentally determined material parameters. When used in the design of energy absorbing composite structures, it can reduce the dependence on physical testing. This paper validates this model against experimental data obtained from the literature and in-house testing. Results show that the model can predict the force response of the crushed composite structures with good accuracy. The simulated energy absorption in each test case was within 12% of the experimental value. Post-crush deformation and the damage morphologies, such as ply splitting, splaying and breakage, were also accurately reproduced. This study establishes the capability of this damage model for predicting the responses of composite structures under crushing loads.

History

Journal

Composite structures

Volume

147

Pagination

65 - 73

Publisher

Elsevier

Location

Amsterdam, The Netherlands

ISSN

0263-8223

Language

eng

Publication classification

C1.1 Refereed article in a scholarly journal

Copyright notice

2016, Elsevier

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