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Identifying key parameters for design improvement in high-dimensional systems with uncertainty

Fender, Johannes and Graff, L. and Harbrecht, H. and Zimmermann, Markus. (2014) Identifying key parameters for design improvement in high-dimensional systems with uncertainty. Journal of mechanical design, Vol. 136, H. 4 , 041007.

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Official URL: http://edoc.unibas.ch/dok/A6233716

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Abstract

Key parameters may be used to turn a bad design into a good design with comparatively little effort. The proposed method identifies key parameters in high-dimensional nonlinear systems that are subject to uncertainty. A numerical optimization algorithm seeks a solution space on which all designs are good, that is, they satisfy a specified design criterion. The solution space is box-shaped and provides target intervals for each parameter. A bad design may be turned into a good design by moving its key parameters into their target intervals. The solution space is computed so as to minimize the effort for design work: its shape is controlled by particular constraints such that it can be reached by changing only a small number of key parameters. Wide target intervals provide tolerance against uncertainty, which is naturally present in a design process, when design parameters are unknown or cannot be controlled exactly. In a simple two-dimensional example problem, the accuracy of the algorithm is demonstrated. In a high-dimensional vehicle crash design problem, an underperforming vehicle front structure is improved by identifying and appropriately changing a relevant key parameter.
Faculties and Departments:05 Faculty of Science > Departement Mathematik und Informatik > Mathematik > Computational Mathematics (Harbrecht)
UniBasel Contributors:Harbrecht, Helmut and Graff, Lavinia
Item Type:Article, refereed
Article Subtype:Research Article
Bibsysno:Link to catalogue
Publisher:ASME
Note:Publication type according to Uni Basel Research Database: Journal article
Last Modified:04 Sep 2015 14:32
Deposited On:27 Mar 2014 13:13

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