The present work has developed a hybrid particle-element method for impact simulation in high-strength fabrics, which are widely used in ballistic protection and blast mitigation applications. The method avoids some well-known disadvantages of the unite element models which dominate the numerical literature in this field. Specific advantages of this method include a completely general treatment of contact-impact and a seamless treatment of material failure, without mass or energy discard. These advantages are of particular importance in modeling the perforation of multilayer fabric protection systems. Since the numerical formulation described here models the general thermomechanical dynamics of the fabric, its application is not limited to a low impact velocity regime. The numerical model developed here has been validated against experimental impact data for both aramid and ultra high molecular weight polyethelene fabric targets. Future work may include extension of the geometric model to represent non-plain weaves; although recent research has attempted to model the quasi-static mechanical response of non-plain weaves, no previous work has attempted to predict the ballistic response of non-plain weave soft armor materials.
Impact dynamics simulation for multilayer fabrics
Simulation der Stoßdynamik vielschichtiger Gewebe
International Journal for Numerical Methods in Engineering ; 83 , 5 ; 537-557
2010
21 Seiten, 16 Bilder, 2 Tabellen, 50 Quellen
Article (Journal)
English
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