Optimization of finite element modeling of woven fabric ballistic impact

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

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 publicationGeneral, Terminal Ballistics and Impact Physics
EditorsMatthias Wickert, Manfred Salk
PublisherDEStech Publications Inc.
Pages1608-1616
Number of pages9
ISBN (Electronic)9781605951065
StatePublished - Jan 1 2013
Event27th International Symposium on Ballistics, BALLISTICS 2013 - Freiburg, Germany
Duration: Apr 22 2013Apr 26 2013

Publication series

NameProceedings - 27th International Symposium on Ballistics, BALLISTICS 2013
Volume2

Other

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

ASJC Scopus subject areas

  • Mechanical Engineering
  • Computational Mathematics
  • Modeling and Simulation

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  • Cite this

    Zhu, D., Mobasher, B., & Rajan, S. (2013). Optimization of finite element modeling of woven fabric ballistic impact. In M. Wickert, & M. Salk (Eds.), General, Terminal Ballistics and Impact Physics (pp. 1608-1616). (Proceedings - 27th International Symposium on Ballistics, BALLISTICS 2013; Vol. 2). DEStech Publications Inc..