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Mathematical Problems in Engineering
Volume 2013, Article ID 612942, 22 pages
Research Article

On Structural Patterns of Mechanical Systems with Impacts with One and Two Degrees-of-Freedom

Division of Dynamics, Technical University of Lodz, Stefanowskiego 1/15, 90-924 Lodz, Poland

Received 20 July 2012; Accepted 5 December 2012

Academic Editor: Jun-Juh Yan

Copyright © 2013 Barbara Blazejczyk-Okolewska. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Structural patterns of mechanical systems with impacts with one degree-of-freedom and two degrees-of-freedom, with elastic connections, have been identified and described. For their identification, a general method proposed by the author has been applied. This method uses (i) a matrix representation of the system with impacts, (ii) procedures that enable generations of all combinations of such systems as well as their identification and elimination of redundant equivalent combinations, and (iii) a procedure for elimination of disconnected systems.