Computational And Experimental Analysis Of A
Hybrid Car Impact Absorber
Author(s)
M. Costas, L. E. Romera, J. Díaz, S. Hernández & A. Tielas
Abstract
Over the past years, car manufacturers have focused their efforts on improving
the safety levels of drivers, passengers and pedestrians by a change in the
conception of crashworthiness. Cars have become safer due to the improvement
of the crash energy dissipation: plastic materials and specific energy absorbers
are nowadays a requirement for most car manufacturers over the world. At the
same time, a wide range of crash tests have been designed in order to qualify and
compare the crashworthiness capabilities of different car models. Finally, and
once the new car models pass these tests, manufacturers put their attention in
optimizing the weight of the energy absorption system without penalizing the
crashworthiness levels obtained from the tests.
This research tries to carry on accurate computational simulations of impacts
against crash absorbers made of steel and several filling or wrapped materials
such as PET foam, cork, polyamide with glass fibers and epoxy-carbon fiber
composites. The numerical models are validated against experimental tests and
simulation results are compared and correlated with the results obtained in the
test facilities for some specimens, including an empty steel tube for comparative
purposes.
Keywords: crashworthiness, crushing, hybrid parts, optimization, drop tower
test.
Keywords
Keywords: crashworthiness, crushing, hybrid parts, optimization, drop tower
test.
Related Book
Other papers in this volume
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