Using the elimination method for automated dimensioning of interference fits by means of finite element analysis

Titelangaben

Lange, Christopher ; Zahn, Aljoscha ; Rosnitschek, Tobias ; Rieg, Frank:
Using the elimination method for automated dimensioning of interference fits by means of finite element analysis.
In: Corves, Burkhard ; Gericke, Kilian ; Grote, Karl-Heinrich ; Lohrengel, Armin ; Löwer, Manuel ; Nagarajah, Arun ; Rieg, Frank ; Scharr, Gerhard ; Stelzer, Ralf (Hrsg.): 18. Gemeinsames Kolloquium Konstruktionstechnik 2020: Nachhaltige Produktentwicklung ; KT 2020. - Duisburg , 2020 . - S. 41-54
ISBN 978-3-940402-43-1
DOI: https://doi.org/10.17185/duepublico/73094

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Abstract

The design of interference fits is well suited for automation due to its standardized approach. Analytical approaches such as the dimensioning according to DIN 7190 are usually limited, which is why high safety margins are accepted. If cost savings should be realized, finite element analysis (FEA) may be used. The Lagrange multiplier method or the penalty method are frequently used for the modelling. The elimination method, can combine the advantages of both methods, as it provides exact results and reduces the system of equations on the other hand. This can have a positive effect on computation times. Especially for repetitive problems - such as dimensioning fits - additional scaling effects can be realized. This contribution introduces and validates the elimination method. An approach for the automated design of interference fits is presented and its effectiveness is demonstrated using a practical example from the field of lightweight construction.