Impact Modeling of Bio-Textile Composite from Agave and Pineapple Leaf Fibers with Sandwich Structure

The objective of this research is a comprehensive model is presented to study the deformation and damage to bio-textile composite from agave and pineapple leaves fibers under s mall projectile impacts. The approach dynamically follows the strain wave propagation along each individual yarn away from the impact point. As in previous work the mechanics of wave propagation is formulated in terms of impulse-momentum balance equations, which are solved at each fiber crosser using a finite different technique. Our approach explicitly considers the various projectile characteristics namely; mass, velocity and shape, as well as all fiber properties such as denier, modulus, and tenacity. Even more importantly the model allow to account for s lippage of yarn at crossovers and within the c lamps In previous work, slippage of yarn and fracture processes are described with a kinetic approach, which ex plicitly accounts for their dependence on impact rate. Results of model are in good quantitative agreement with publis h experimental data on s ingle ply and several plies biotextile composite. They also clearly indicate that yarn slippage through clamps often seen experimentally is responsible for some salient features observed in balistic.