Bumper low-speed impact test regulations were comprehensively analyzed with reference to the European ECE-R42, the United States Part 581 and Canada CFVSS215 regulations, and four kinds of load conditions were proposed for analyzing bumper performances at low-speed crash. A finite element analysis method was presented for estimating crash performance of a bumper, and a calculation was carried out for a real car bumper under the proposed four conditions, with maximum longitudinal deformation and energy-absorbing rate as main evaluation indicators. Also, the influence of the bumper thickness on crash performance was investigated, and the results showed that the two-mm-thick beam should be chosen. The calculation and analytical methods and the calculated results presented in this paper are instructive for designing crash performances of a bumper at low-speed impact.
Key words
Automotive bumper /
Low-speed impact /
Test standard /
Simulation analysis
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References
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