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Pre-study of implementation of model reduction techniques in ANSYS
2003 (English)Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

Handling large Finite Element models efficiently is a well-known problem. Performing analysis on large models is rarely computing efficient and is therefore both time-consuming and expensive. Ever since the Finite Element method was developed in the 50s researchers all over the world have been trying to formulate a model reduction technique that will permit the models to be condensed without loosing accuracy. In this Master's thesis different types of model reduction techniques are reviewed and evaluated and the implementation of a selected reduction technique into ANSYS, a commercial Finite Element Method program, is described. The reader is also provided with a case study that makes a comparison between the implemented model reduction technique to a technique that is already featured in ANSYS. This case also validates the accuracy of the results obtained from the reduced model. The application considered is the non-rotating parts of gas and industrial steam turbines, i.e. the stator.

Place, publisher, year, edition, pages
2003.
Keyword [en]
Technology, Model reduction, ANSYS, Finite Elements Method, Guyan, reduction, Component Mode Synthesis, Improved Reduced System, Dynamic Condensation
Keyword [sv]
Teknik
Identifiers
URN: urn:nbn:se:ltu:diva-55373ISRN: LTU-EX--03/018--SELocal ID: c3f6d63c-6684-413d-9e69-efc93a17ed4fOAI: oai:DiVA.org:ltu-55373DiVA: diva2:1028755
Subject / course
Student thesis, at least 30 credits
Educational program
Ergonomic Design & Production Engineering, master's level
Examiners
Note
Validerat; 20101217 (root)Available from: 2016-10-04 Created: 2016-10-04Bibliographically approved

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