Design and Analysis of Attenuator Structure for Better Impact Performance for FSAE Car

This paper focus on design and analysis of the attenuator structure for better impact performance for FSAE car. Different design honeycomb attenuator structure and baseline model of FSAE with different material is used to identify the energy absorption as well as deceleration level. The methodology involves Geometric modelling, Finite element analysis, Simulation and reviewing results. CAD and CAE tools were used to model and perform Finite Element Analysis respectively. The energy absorption of honeycomb attenuator structure was studied by varying the honeycomb structure. The data requires the vehicle is traveling at 7 m/s during the impact with a total mass of 300 kg. The peak deceleration during the impact must be under 40g. Aluminum honeycomb attenuator with uniform thickness satisfies these acceptable results. Overall, the results highlight the advantage of uniform wall thickness honeycomb attenuator structure for absorbing impact energy, which also meets the FASE regulatory requirements of Impact attenuator.