Fabric impact drop tests: numerical simulations using the Ls-Dyna micro-mechanical approach and experimental characterization

Rosario Dotoli, Michele Rizzo

Consorzio CETMA


Least Risk Bomb Location (LRBL) regulation represents a challenge for aircraft manufacturers. On the basis of this standard, in the EU research project FLY-BAG2, an innovative containment system has been designed to reduce the effects of on-board explosions. In this project, as main result, a blast resistant flexible container characterized by a multilayered high performance textile with composite reinforcements has been developed. In this paper the behaviour of the main textile materials has been analyzed by means of LS-Dyna code. In particular, the fabric drop test has been modelled and simulated. The numerical model derivation utilizes the micro-mechanical approach and the homogenization technique. The LS-Dyna results have been compared with the experimental data to calibrate the numerical material model and to evaluate the performance of the technical textiles. Finally, the main parameters of the textile have been identified, bringing evidence of the numerical model capability to simulate the impact behaviour of woven fabrics.