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

Research output: Contribution to journalArticleResearchpeer-review

Abstract

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.
Original languageEnglish
Pages (from-to)65-73
Number of pages9
JournalComposite Structures
Volume147
DOIs
Publication statusPublished - 1 Jul 2016

Keywords

  • Damage mechanics
  • Finite element analysis
  • Crushing response
  • Energy absorption

Cite this

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title = "Validation of a 3D damage model for predicting the response of composite structures under crushing loads",
abstract = "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.",
keywords = "Damage mechanics, Finite element analysis, Crushing response, Energy absorption",
author = "Chiu, {Louis N. Sum.} and Falzon, {Brian G.} and Bernard Chen and Wenyi Yan",
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Validation of a 3D damage model for predicting the response of composite structures under crushing loads. / Chiu, Louis N. Sum.; Falzon, Brian G.; Chen, Bernard; Yan, Wenyi.

In: Composite Structures, Vol. 147, 01.07.2016, p. 65-73.

Research output: Contribution to journalArticleResearchpeer-review

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AU - Chen, Bernard

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