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Spot weld reduction methods for automotive structures
Linköping University, Department of Management and Engineering. Linköping University, Faculty of Science & Engineering. Combitech AB, Sweden.
Linköping University, Department of Management and Engineering, Solid Mechanics. Linköping University, Faculty of Science & Engineering.
2016 (English)In: Structural and multidisciplinary optimization (Print), ISSN 1615-147X, E-ISSN 1615-1488, Vol. 53, no 4, 923-934 p.Article in journal (Refereed) PublishedText
Abstract [en]

Spot welds are commonly used to join steel sheets in automotive structures. The number and layout of these spot welds are vital for the performance of the structure. However, reducing the number of spot welds will cut both production time and cost. This article presents three different methods of reducing the number of spot welds in automotive structures: ranking-based selection, topology optimization and size optimization of a parameterized model. The methods are compared in a simple example and it is found that the latter two methods have the best potential of reducing the number of spot welds. Topology optimization requires less preparation and computational effort as compared to size optimization of a parameterized model. However, the method is primarily suitable for studies where load cases involving linear systems are judged to be most important. Otherwise, size optimization of a parameterized model is probably a better choice. The topology optimization approach is successfully demonstrated in a full-scale industrial application example and confirms that the method is useful within contemporary product development.

Place, publisher, year, edition, pages
SPRINGER , 2016. Vol. 53, no 4, 923-934 p.
Keyword [en]
Spot weld optimization; Multidisciplinary design optimization (MDO); Topology optimization; Size optimization; Metamodels; Automotive structures
National Category
Mechanical Engineering
Identifiers
URN: urn:nbn:se:liu:diva-127430DOI: 10.1007/s00158-015-1355-4ISI: 000373023800018OAI: oai:DiVA.org:liu-127430DiVA: diva2:925260
Note

Funding Agencies|Vinnova FFI project

Available from: 2016-05-01 Created: 2016-04-26 Last updated: 2016-05-01

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Ryberg, Ann-BrittNilsson, Larsgunnar
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Department of Management and EngineeringFaculty of Science & EngineeringSolid Mechanics
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Structural and multidisciplinary optimization (Print)
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