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Topology optimization of vehicle structures
Volvo Technology Corporation.
(English)Manuscript (preprint) (Other academic)
Abstract [en]

A method for structural topology optimization of beams with flexible joints is presented. For vehicle structures the result of topology optimization is often resulting in a frame structure consisting of beams and joints connecting the beams. The problem at hand is to find the topology, i.e. how beams and joints are connected, in the best way and as lightweight as possible for the requirements on the st ructure. For vehicles the properties of the joints are important for the total stiffness response and for the construction of the joints. An application problem of a low floor city bus is presented and the result of the optimization is discussed. By using topology optimization a good structural concept is found for further analysis and construction.

National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:liu:diva-100817OAI: oai:DiVA.org:liu-100817DiVA: diva2:663754
Available from: 2013-11-12 Created: 2013-11-12 Last updated: 2013-11-12
In thesis
1. Topology optimization of vehicle structures
Open this publication in new window or tab >>Topology optimization of vehicle structures
2004 (English)Licentiate thesis, comprehensive summary (Other academic)
Abstract [en]

This thesis concerns topology optimization of vehicle structures. Vehicle structures are considered to be composed of beams joined together and the work has been focused on a method for beam topology optimization including joints.

The method presented has been implemented in Matlab and simple examples as well as more realistic applications have been studied. The research work is presented in four papers.

Paper I presents beam topology opt imization with flexible joints. Design variables on beam cross sectional geometries and joint properties are introduced. A generic joint element is formulated in order to do topology optimization and the compliance topology optimization problem is described and solved.

Paper II is an extension of Paper I where the joints are more general with stiffness properties in different directions. The paper introduces also a way to find joint stiffness for the generic joints.

Paper III is a short application paper where a bus structure is optimized using the method presented in Paper l and II.

Paper IV, finally, presents an approach to optimize a frame structure with regard to cost as well as for compliance and mass as in previous papers. This multi-attribute optimization method is applied to a ten beam structure and to a larger application example.

Place, publisher, year, edition, pages
Linköping: Linköpings universitet, 2004. 6 p.
Series
Linköping Studies in Science and Technology. Thesis, ISSN 0280-7971 ; 1088
Series
Linköping studies in science and technology. Thesis, 148
Keyword
topology optimization, frame structure, vehicle structure, flexible joint
National Category
Engineering and Technology
Identifiers
urn:nbn:se:liu:diva-22919 (URN)2274 (Local ID)91-7373-942-1 (ISBN)2274 (Archive number)2274 (OAI)
Available from: 2009-10-07 Created: 2009-10-07 Last updated: 2013-11-12

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf