Abstract

This paper presents an optimization method and results on a material model of Kevlar 49 fabric that was implemented in LS-DYNA through a user defined material subroutine (UMAT). Both the shear properties of the fabric and the parameters used in Cowper-Symonds (CS) model that accounts for strain rate effect on material properties were optimized to achieve close match between the FE simulations and experimental data. Two different modeling configurations, i.e. single FE layer (SL) and multiple FE layers (ML) were used to simulate the ballistic tests conducted at NASA-GRC. The results show that the single layer model is computationally efficient and predicts the ballistic tests with less error than the multi-layer model, while the latter is able to consider the friction between fabric layers.

Original languageEnglish (US)
Title of host publicationProceedings - 27th International Symposium on Ballistics, BALLISTICS 2013
PublisherDEStech Publications Inc.
Pages1608-1616
Number of pages9
Volume2
ISBN (Print)9781605951065
StatePublished - 2013
Event27th International Symposium on Ballistics, BALLISTICS 2013 - Freiburg, Germany
Duration: Apr 22 2013Apr 26 2013

Other

Other27th International Symposium on Ballistics, BALLISTICS 2013
CountryGermany
CityFreiburg
Period4/22/134/26/13

Fingerprint

Finite Element Modeling
Ballistics
Optimization
LS-DYNA
Subroutines
Strain Rate
NASA
Model
Material Properties
Optimization Methods
Multilayer
Strain rate
Friction
Materials properties
Experimental Data
Predict
Configuration
Modeling
Simulation

ASJC Scopus subject areas

  • Mechanical Engineering
  • Computational Mathematics
  • Modeling and Simulation

Cite this

Zhu, D., Mobasher, B., & Rajan, S. (2013). Optimization of finite element modeling of woven fabric ballistic impact. In Proceedings - 27th International Symposium on Ballistics, BALLISTICS 2013 (Vol. 2, pp. 1608-1616). DEStech Publications Inc..

Optimization of finite element modeling of woven fabric ballistic impact. / Zhu, Deju; Mobasher, Barzin; Rajan, Subramaniam.

Proceedings - 27th International Symposium on Ballistics, BALLISTICS 2013. Vol. 2 DEStech Publications Inc., 2013. p. 1608-1616.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Zhu, D, Mobasher, B & Rajan, S 2013, Optimization of finite element modeling of woven fabric ballistic impact. in Proceedings - 27th International Symposium on Ballistics, BALLISTICS 2013. vol. 2, DEStech Publications Inc., pp. 1608-1616, 27th International Symposium on Ballistics, BALLISTICS 2013, Freiburg, Germany, 4/22/13.
Zhu D, Mobasher B, Rajan S. Optimization of finite element modeling of woven fabric ballistic impact. In Proceedings - 27th International Symposium on Ballistics, BALLISTICS 2013. Vol. 2. DEStech Publications Inc. 2013. p. 1608-1616
Zhu, Deju ; Mobasher, Barzin ; Rajan, Subramaniam. / Optimization of finite element modeling of woven fabric ballistic impact. Proceedings - 27th International Symposium on Ballistics, BALLISTICS 2013. Vol. 2 DEStech Publications Inc., 2013. pp. 1608-1616
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