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Gaurav Nilakantan |
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Research— State of the Art in Finite Element Modeling of Fabrics |
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The finite element modeling of flexible woven fabrics is critically revisited and techniques to model the fabric from the filament to yarn to membrane level are presented. The pros and cons of each approach are addressed. Often the limitations of certain finite elements and the way in which they are incorporated into the FE model of fabrics are overlooked. For example shell elements are not capable of handling through thickness compression and therefore when used in the yarn or membrane form to model the fabric directly underneath the projectile, the important phenomena of transverse yarn compression cannot be captured. Similarly thickness and cross sectional shape changes cannot be accounted for. In such a region, solid elements are preferable. Modeling at a filament level provides the best accuracy however such a model is the most complicated to set up.
In this research the fabric is modeled at the filament level using 1d elements, at the yarn level using either shell (2d) or solid (3d) elements, and at the fabric (membrane) level using shell elements. Impact simulation results are compared to each other. These include wave propagations, energy dissipations, projectile velocity, and deformations.
These individual fabric models ultimately come together to form the various components of our HEA multiscale model.
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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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