With the changing USNCAP rating, complexity of crash pulse assessment increases due to the higher number of applied dummy values, further body regions and additional dummies. The target of this investigation was to assess whether existing pulse criteria like OLC++ are also applicable for the new rating and to understand, if modifications are recommended to cover the mechanisms driving the additional dummy values. At first correlation between dummy values were analyzed to check whether it is generally possible to establish a generic crash pulse criterion, or if separate crash pulse criteria are required for some dummy values, or even if some mechanisms can not be covered by pulse assessment at all. Different vehicle types were taken into account and it was observed if differences between driver and passenger appear. It was found that HIC15, chest deflection and chest acceleration can potentially be assessed by one single crash pulse criterion. If some limitation in femur correlation is accepted, also femur could be added. Also a generic indication of neck values could potentially be added to such a criterion. However, that might require significant compromises. This is also supported by looking at the correlation of dummy values with existing pulse criteria. It was investigated to what extent pulse criteria derived for the current USNCAP rating and other load-cases are capable to assess pulse severity with respect to the relevant dummy values of the USNCAP 2011 rating. Both the results from the dummy value correlation study and the investigation of correlation of existing pulse criteria indicate that separate criteria for specific body regions, covering the underlying physical effects for each dummy value, could be beneficial. Those criteria could be combined either by using a weighted criteria approach with some limitations in specific body regions or by applying a Pareto type approach that gives the user more information but on the other hand increases complexity of standardization.
Characterization and evaluation of frontal crash pulses for USNCAP 2O11
2010
15 Seiten, 17 Bilder, 4 Quellen
Aufsatz (Konferenz)
Englisch
Characterization of Frontal Crash Pulses
British Library Conference Proceedings | 2000
|Characterization and evaluation of frontal crash pulses for USNCAP 2011
Kraftfahrwesen | 2010
|Comparison of frontal crash test pulses
Kraftfahrwesen | 2000
|Comparison of frontal crash test pulses
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|Characterization and evaluation of frontal crash pulses with respect to ocupant safety
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