LS-Dyna contact procedure analysis for selected mechanical systems

• Autorzy: Małachowski J. , Bukala J. , Damaziak K. , Tomaszewski M.

Identyfikatory

DOI

10.5604/12314005.1161741

• Języki publikacji: EN

Abstrakty

EN

Finite Element Method is one of the most frequently used computational schemes in numerical analyses. A contact phenomenon is an essential issue when modelling the physical interaction between two or more bodies. Depending on the used software, the various contact algorithms are applied. In the paper, the authors present the results of evaluation of different contact methods implemented in LS-Dyna CAE software. The most common problem arising during contact modelling is the occurrence of penetration between the coupling elements, which leads to an increase of contact forces and, consequently, a local deformation of finite elements. In the introduction, a theoretical background related to mathematical aspects of contact modelling is presented, in particular search methods for contact surfaces and the penalty forces calculating method. Subsequently, a contact analysis for different variants of interaction of the elements is presented. In the first analysed case, shaft- sleeve interaction, in both rotation and translation, is presented. The variable factors in this case were a number of interacting finite elements and the type of a contact algorithm. The second case focused on the interaction forces resulting from the interaction between two sliding bodies in the harmonic motion. A sliding body was pressed against the plane using an increasing force. A variable factor in this case was the type of the implemented contact algorithm.

Słowa kluczowe

EN

contact; finite element method; LS-DYNA; shaft; sleeve

• Wydawca: Łukasiewicz Research Network - Institute of Aviation ; European Science Society of Powertrain and Transport KONES Poland ; Wydawnictwo Instytutu Technicznego Wojsk Lotniczych
• Czasopismo: Journal of KONES
• Rocznik: 2015
• Tom: Vol. 22, No. 1
• Strony: 193--202
• Opis fizyczny: Bibliogr. 6 poz., rys.

Twórcy

autor

Małachowski J.

• Military University of Technology Department of Mechanics and Applied Computer Science Gen. S. Kaliskiego Street 2, 00-908 Warsaw, Poland tel. [phone], fax: [phone]

autor

Bukala J.

• Military University of Technology Department of Mechanics and Applied Computer Science Gen. S. Kaliskiego Street 2, 00-908 Warsaw, Poland tel. [phone], fax: [phone]

autor

Damaziak K.

• Military University of Technology Department of Mechanics and Applied Computer Science Gen. S. Kaliskiego Street 2, 00-908 Warsaw, Poland tel. [phone], fax: [phone]

autor

Tomaszewski M.

• Military University of Technology Department of Mechanics and Applied Computer Science Gen. S. Kaliskiego Street 2, 00-908 Warsaw, Poland tel. [phone], fax: [phone]

Bibliografia

• [1] Hallquist, J., LS-DYNA theory manual, LSTC, Livermore, 2006.
• [2] Yastrebov, V. A., Computational Contact Mechanics, Ph. D. dissertation, MINES ParisTech, Centre des Matériaux, UMR CNRS 7633, 2011.
• [3] Damaziak, K., Małachowski, J., Comparison of contact algorithms in the aspect of heat generation in a coupled thermo-mechanical analysis, Przegląd Mechaniczny, 7-8/2012, ss. 15-20, ISSN 0033-2259 (in Polish), 2012.
• [4] Vulovic, S., Zivkovic, M., Grujovic, N., Slavkovic, R., A comparative Study of Contact Problems Solution Based on the Penalty and Lagrange Multiplier Approaches, J. Serbian Society for Computational Mechanics, 1 (1) (2007), ss.174-183, 2007.
• [5] Bathe, K. J., Finite Element Procedures, Prentice Hall, New Jersey (1996), ISBN: 0-13- 301458-4, 1996.
• [6] Wriggers, P., Computational Contact Mechanics, Chichester, John Wiley & Sons Ltd, West Sussex (2002), ISBN 0-471-49680-4, 2002.