| 摘要 |
A crash attenuation system having an impact head (50), and energy absorption mechanism (12, 14, 16) is disclosed. The energy absorbing mechanism (12, 14, 16) has a mandrel (12) for rupturing thin-walled tubes (14) in a controlled rupture to absorb impact forces from a colliding vehicle. A frame (50) may b e used to mount the system to a truck, trailer, guardrail, median barrier end treatment, or a crash cushion. Stress concentrators (16, 18) may be incorporated into the tubes (14) and the mandrels (12) to selectively contro l rupturing and energy dissipation.
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