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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, Faculty of Medicine, Department of Surgical and Perioperative Sciences.
2010 (English)In: International Journal of Crashworthiness, ISSN 1358-8265, E-ISSN 1754-2111, Vol. 15, no 4, 343-355 p., PII 927513408Article 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
Taylor & Francis, 2010. Vol. 15, no 4, 343-355 p., PII 927513408
Keyword [en]
finite element (FE) models, FE analysis, metamodelling, simulation, optimisation, biomechanics
National Category
Medical Engineering
Identifiers
URN: urn:nbn:se:umu:diva-109037DOI: 10.1080/13588260903385550ISI: 000282581700001OAI: oai:DiVA.org:umu-109037DiVA: diva2:857201
Available from: 2015-09-28 Created: 2015-09-17 Last updated: 2017-12-01Bibliographically approved

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  • de-DE
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  • fi-FI
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  • nn-NB
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  • asciidoc
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