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Gaurav Nilakantan |
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Research— Material Model for Fabrics Modeled as Membranes and Implementation as a UMAT in LS-DYNA |
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A material model has been developed to realistically simulate the behavior of loose woven fabrics with elastic crimped fibers subject to varying loading conditions such as in-plane and transverse loading. It is based upon a micromechanical approach that includes the architecture of the fabric and the phenomenon of yarn reorientation. The yarns are simplified as 1-d elastic members with a single failure criterion. The material model is implemented as a user-defined subroutine in the explicit, non-linear dynamic finite element code LSDYNA. Results of fabric test simulations run in LSDYNA using this material model agree well with experimental results, demonstrating the material model’s capability to accurately simulate ballistic impact of woven fabrics. |
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Office : +1(302)831-6284 E-mail : nilakag@udel.edu Yahoo : gauravnilakantan@yahoo.com Gmail : nilakantan.gaurav@gmail.com |
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Gaurav Nilakantan Center for Composite Materials 201 Composites Manufacturing Science Lab Academy St and E. Delaware Ave University of Delaware Newark, DE 19716, USA |
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To Contact me: |
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Center for Composite Materials University of Delaware, USA |
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© Copyright 2009 by Gaurav Nilakantan. All rights reserved. |
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