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  • Progress in the measurement of the impact energy absorption and crushing strength of real-size thin sheet metal structures for the protection of car passengers


It is shown that a LDTF (Large Dynamic Testing Facility) modified to an Hopkinson's bar of high load capability (5 MN) allows the precise measurement of the impact loading and response of automotive safety structures. This is achieved by experimental control of the wave propagation path. The measured impact quantities provide the necessary input data for reliable predictions of collision effects by means of finite elements codes. The peak crushing strength value is measured in a clean and direct way without any filtering or correction procedure. The principle of this testing method can be extended to clean measurements of load distribution over energy absorbing subassemblies of cars such as bumper and associated energy absorbing thin sheet metal boxes.

Additional information

Bibliographic Reference: Paper presented: International Conference on Structural Failure, Product Liability and Technical Insurance, Wien, July 5-10, 1992
Availability: Available from (1) as Paper EN 36897 ORA
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