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Methodology for mass minimisation of a seat structure with integrated safety belts constrained by biomechanical responses on the occupant in frontal crashes
Umeå university.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Mechanics of Solid Materials.ORCID iD: 0000-0001-7074-8960
2010 (English)In: International Journal of Crashworthiness, ISSN 1358-8265, E-ISSN 1754-2111, Vol. 15, no 4, p. 343-355Article in journal (Refereed) Published
Abstract [en]

A methodology using finite element (FE) modelling and simulation with a property-based model (PBM) is presented. A generic 3-D FE model of a seat structure with a three-point seat-integrated safety belt configuration was established. A 50th percentile Hybrid III FE dummy model was used as occupant. Metamodelling techniques were used in optimisation calculations performed in two steps. Step 1: Six separate optimisations minimising biomechanical responses of the FE dummy model. Step 2: Four separate optimisations with different start values of the design variables, with the total mass of the seat structure as objective function and with the minimised biomechanical responses from Step 1 as constraint values. Six design variables were used in both Step 1 and Step 2. The four optimisations performed in Step 2 generated four different results of the total mass. Thus, different local minima were found instead of one single global minimum. The presented methodology with a PBM may be used in a concept design phase. Some issues concerning the FE model suggest further improvement.

Place, publisher, year, edition, pages
2010. Vol. 15, no 4, p. 343-355
Keywords [en]
Technology - Engineering mechanics
Keywords [sv]
Teknikvetenskap - Teknisk mekanik
National Category
Applied Mechanics
Research subject
Solid Mechanics
Identifiers
URN: urn:nbn:se:ltu:diva-2659DOI: 10.1080/13588260903385550ISI: 000282581700001Scopus ID: 2-s2.0-77957837940Local ID: 04fd34c0-db6f-11df-8b36-000ea68e967bOAI: oai:DiVA.org:ltu-2659DiVA, id: diva2:975512
Note
Validerad; 2010; 20101019 (mo)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Gavelin, AndersHäggblad, Hans-ÅkeOldenburg, Mats

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