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From CAD to FEA: A design automation perspective
Jönköping University, School of Engineering, JTH, Mechanical Engineering. Jönköping University, School of Engineering, JTH. Research area Computer Supported Engineering Design. (IT-stöd i konstruktionsprocessen)
2006 (English)Licentiate thesis, comprehensive summary (Other academic)
Abstract [en]

CAD-models of parts produced by injection moulding or die-casting are often complex making the task of automated geometrical idealisation for finite element analysis difficult. Conventional tools for geometric idealisation are not ideal for the task, as will be shown in the thesis. To address the idealisation problem, this thesis proposes a novel method of creating geometric idealisations of CAD-models for finite element analysis. Knowledge about the production and design processes is used to support the idealisations. The key idea is to simplify the idealisation problem by using the fact that die-cast and injection-moulded parts have a clearly defined tooling draft direction. It is primarily the mid-surfaces of the thin-walled geometry that are extracted for shell element meshing. The ideas have been tested by the creation of a CAD-integrated system that reads the construction history tree of the CAD-model and creates an idealised geometry in the same CAD-model automatically. It is also shown how the system can be used for idealising neutral format files by creating a virtual construction history tree in interaction with the user. The system is named CASTING (CAd Supported Tool for Idealisation of Geometry). The overall objective is to save time in the idealisation step, thereby freeing time for more creative work in the design process.

Place, publisher, year, edition, pages
Göteborg: Chalmers Tekniska Högskola , 2006. , p. 40
Series
Research Series from Chalmers University of Technology, ISSN 1652-9243 ; 13
Keywords [en]
Idealisation, CAD, Finite element analysis, mid-surfaces, KBES, Feature based modelling, knowledge based systems
National Category
Engineering and Technology Reliability and Maintenance
Identifiers
URN: urn:nbn:se:hj:diva-1722OAI: oai:DiVA.org:hj-1722DiVA, id: diva2:32542
Presentation
(English)
Available from: 2007-08-03 Created: 2007-08-03 Last updated: 2009-09-03Bibliographically approved

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Stolt, Roland

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CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • 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