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Continuum Model Simulations and Experiments of Projectile Impact on Woven Fabric
MASSACHUSETTS INST OF TECH CAMBRIDGE
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Modeling woven fabrics is challenging due to the need to capture the fabric response at both the macroscopic scale of the fabric and the mesoscale of the yarns that compose the weave. Here, we utilize a continuum-level modeling technique for woven fabrics which captures the macroscopic response of the fabric as well as the evolution of its mesostructure with deformation in a single efficient modeling step. A membrane element formulation of the model is implemented into a nonlinear finite element code with a fully explicit solver and hard contact. In addition to displacement degrees of freedom, degrees of freedom representing the crimp amplitude of each yarn family are defined in order to solve for the configuration of the fabric unit cell at each step in time. The accuracy of the model is verified by comparing the simulation results with the experiments of Weerasooriya et al. 2008.
APPROVED FOR PUBLIC RELEASE