MODELLING BALLISTIC IMPACT ON WOVEN FABRIC WITH LS-DYNA
This paper presents a novel method of modelling ballistic impact on woven polymeric fabric commonly used in armour applications. This method incorporates the viscoelastic behaviour of the fabric yarns, yarn crimp, inter-yarn friction and friction between projectile and fabric. The yarns of the fabric are modelled as viscoelastic bar elements interwoven together. Excellent agreement between simulation and ballistic test data is obtained in the prediction of the energy absorbed by the fabric and the deformation of the fabric during impact. This is achieved despite the modest number of DOFs.
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