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ST7-1.40.70.23 Plate Mesh Approach to Guard Rail Impact
This Webnote is a continuation of ST7-1.40.70.22 Guard Rail Impact Analysis, in which a guard rail model using beam elements was impacted. In this analysis, we convert a portion of the guard rail into plate elements in order to consider crushing of the W-beam cross-section. The Head Injury Criterion (HIC) is calculated using the acceleration time history of the impactor. As in the previous analysis, an 820 kg mass travelling at 100 kph impacts the rail at 20 degrees.
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