Stiffness analysis of an electric car composite bumpers

A bumper system is a vehicle front and rear components designed to absorb kinetic energy during low-speed impacts and dissipate energy during high-speed impacts without damaging the vehicle. The present work presents numerical and experimental analyses of the front and rear bumpers fascia made of carbon fiber composites. Considering a supporting system similar to the reality, the methods analyze the stiffness of composite parts under static loads applied along and aside of the longitudinal symmetry axis of the car. The comparative results showed a good convergence, allowing future investigations of the bumper system under static and impact loads.