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An Energy Absorbing Elastomeric Bumper
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English
Abstract
Microcellular urethane, as facing for a fixed bumper, was established as functional material for reducing impact forces in low speed vehicle collisions.
The sharply increased modulus at low temperature typical of many urethane elastomers, a cause of high forces upon impact, was overcome in compounds developed during this project.
An energy absorbing bumper of high aesthetic appeal is described, representing a first generation of development. This bumper design is capable of meeting the FMVSS 215 pendulum impact standards.
Testing procedures and data reduction systems were developed to provide ready access to a large volume of test data.
Authors
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Citation
Hintzen, H. and Dunleavy, R., "An Energy Absorbing Elastomeric Bumper," SAE Technical Paper 730027, 1973, https://doi.org/10.4271/730027.Also In
References
- Dunleavy, R. A. “Some Aspects of the Microcellular Urethane Material and Process,” J. Elastoplastics 2 January 1970
- Kuryla, W. C. et al “Polymer / Polyols, A New Class of Polyurethane Intermediates,” J. Cellular Plastics March 1966
- Withrow, J. D. et al “The 1973 Chrysler Energy Absorbing Bumper System,” SAE National Automobile Engineering Meeting May 22-26 1972 720491 5