Multiobjective reliability-based and robust design optimisation for crashworthiness of a vehicle side impact
2015 (English)In: International Journal of Vehicle Design, ISSN 0143-3369, E-ISSN 1741-5314, Vol. 67, no 4, 347-367 p.Article in journal (Refereed) Published
Optimisation of vehicle design is necessary to meet increased safety requirements, new emission regulations, and to deal with competition in the global market, etc. However, optimised design using classical optimisation techniques with deterministic models might not meet the desired performance level or might fail in extreme events in real life owing to uncertainties in the design parameters and loading conditions. Consequently, it is essential to account for uncertainties in a systematic manner to generate a robust and reliable design. In this paper, an approach to perform multiobjective, reliability-based, and robust design optimisation is presented using a vehicle side impact crashworthiness application. Metamodels have been used in the optimisation process to decrease computational effort. Variations in material properties, thicknesses, loading conditions, and B-pillar heat-affected zone material strength have been considered for the stochastic optimisation. A comparative study of deterministic, reliability-based, and robust optimisation approaches is performed.
Place, publisher, year, edition, pages
InderScience Publishers, 2015. Vol. 67, no 4, 347-367 p.
Multiobjective optimisation; robust optimisation; reliabilitybased optimisation; crashworthiness; Monte Carlo analysis; metamodel; boron steel; fracture risk factor
Engineering and Technology
IdentifiersURN: urn:nbn:se:liu:diva-103691DOI: 10.1504/IJVD.2015.070410ISI: 000359461500002OAI: oai:DiVA.org:liu-103691DiVA: diva2:690292