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From CAD to FEA: A design automation perspective
Högskolan i Jönköping, Tekniska Högskolan, JTH, Maskinteknik. Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsområde Datorstödd konstruktion. (IT-stöd i konstruktionsprocessen)
2006 (Engelska)Licentiatavhandling, sammanläggning (Övrigt vetenskapligt)
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.

Ort, förlag, år, upplaga, sidor
Göteborg: Chalmers Tekniska Högskola , 2006. , s. 40
Serie
Research Series from Chalmers University of Technology, ISSN 1652-9243 ; 13
Nyckelord [en]
Idealisation, CAD, Finite element analysis, mid-surfaces, KBES, Feature based modelling, knowledge based systems
Nationell ämneskategori
Teknik och teknologier Tillförlitlighets- och kvalitetsteknik
Identifikatorer
URN: urn:nbn:se:hj:diva-1722OAI: oai:DiVA.org:hj-1722DiVA, id: diva2:32542
Presentation
(Engelska)
Tillgänglig från: 2007-08-03 Skapad: 2007-08-03 Senast uppdaterad: 2009-09-03Bibliografiskt granskad

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Stolt, Roland

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Teknik och teknologierTillförlitlighets- och kvalitetsteknik

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