A method to determine structural sensitivities in vehicle crashworthiness design
2002 (English)In: International Journal of Crashworthiness, ISSN 1358-8265, Vol. 7, no 2, 179-190 p.Article in journal (Refereed) Published
The aim of this work is to determine when a linear surface approximation in the Response Surface Methodology can be utilised to calculate parameter sensitivities of a vehicle exposed to impact loading. Linear surface approximations are less costly than quadratic surfaces due to a lower number of function evaluations. However, the linear surface approximation error is often larger. Two structural impact problems are studied: one simple rail structure with two design variables and one vehicle model with ten design variables. The study has shown that linear surface approximations can be used to determine the order of sensitivity. However, the absolute magnitudes of the sensitivities are not reliable. This can be used if the normalised root mean square error is smaller than 10%.
Place, publisher, year, edition, pages
2002. Vol. 7, no 2, 179-190 p.
Engineering and Technology
IdentifiersURN: urn:nbn:se:liu:diva-48718DOI: 10.1533/cras.2002.0213OAI: oai:DiVA.org:liu-48718DiVA: diva2:269614