Abstract
In the present paper, the design of a crashworthy impact attenuator has been carried out. Vehicle safety is a major problem and having a good energy absorbing impact attenuator improves the safety of the vehicle. It was decided to design an impact attenuator for a formula type race car because of its reduced complications and set of rules which govern the car. After consideration of various materials and evaluating them based on various parameters, aluminium honeycomb was selected for the impact attenuator. Drop test simulation in SolidWorks was carried out to evaluate the performance of the impact attenuator. Calculations abiding the rules of a formula type race car were done to calculate the energy and force, the impact attenuator will be subjected against. These calculations were also the basis for the drop height used in the drop test simulations. The sheet metal impact attenuator was rejected as it failed the drop test, so dynamic simulations were carried out on honeycomb impact attenuator in Ansys Explicit Dynamics. Several problems were faced while running the dynamic simulation and rigorous theoretical study was done to rectify the problems. Simulations were run on a limited number of cells rather than the whole structure and interpolation method was used to find the results for the whole structure. It was finally decided to go with the two layered honeycomb structure.
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Mahajan, S., Dokania, N., Kumar, A., Mishra, S.K. (2021). Design of an Impact Attenuator for a Formula Type Race Car. In: Deepak, B.B.V.L., Parhi, D.R.K., Biswal, B.B. (eds) Advanced Manufacturing Systems and Innovative Product Design. Lecture Notes in Mechanical Engineering. Springer, Singapore. https://doi.org/10.1007/978-981-15-9853-1_12
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DOI: https://doi.org/10.1007/978-981-15-9853-1_12
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