Abstract
Owing to its combined properties and considering that it is a natural cellular material, cork can be widely used as a thermal and acoustic insulator and in various energy-absorbing applications (pavements, packaging, shoe industry, etc.). The goal of the research presented here is the development of an innovative application for cork and its derivatives in energy-absorbing and crashworthiness systems. Cork's efficiency as a material dedicated to energy absorption in automotive passive safety systems is studied numerically, specifically for the protection of the occupant's pelvic area in side-impact crash situations. Finite element analyses are performed with LS-DYNA in order to study the benefits and efficiency of the implementation of a microagglomerated cork padding in the interior of the vehicle's side door. For this purpose, a fully three-dimensional model of side-impact crash test is developed with the appropriate constitutive material models. Obtained results for the impacted system are thoroughly compared in situations with and without the cork padding. The numerical simulation results prove that there is a significant improvement in terms of either absorbed energy or intrusion and peak acceleration.
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