Reverse task of passive and active mechanical systems

• Autorzy: Białas K.
• Języki publikacji: EN

Abstrakty

EN

Purpose: The main purpose of this work is to present the algorithm of a converse problem of dynamics of mechanical systems containing passive and active elements. Solving the problem results in obtaining structures and parameters of a discrete model meeting the defined requirements concerning the dynamic features of the system, in particular, the frequency spectrum. Another objective of this work is to compare the reduction of vibration by means of passive or active elements or while using passive and active elements at the same time. Design/methodology/approach: The work involves the application of a non-classical method of polar graphs and their relation to structural algebra. The use of such a method enables the analysis of mechanical systems irrespective of the type and number of the elements of such a system. Findings: The application of active elements to eliminate vibration enables overcoming limitations which occur if passive elements are used. One of the most important limitations is low efficiency in case of low-frequency vibration and inability to reduce vibration of selected parts of the system. Research limitations/implications: The scope of discussion is reverse task of passive and active mechanical systems, but for this type of systems, such approach is sufficient. Practical implications: The practical realization of the reverse task of dynamics introduced in this work can find uses in designing of machines with active and passive elements with the required frequency spectrum. Originality/value: Thank to the approach, unclassical method of polar graphs and their relationship with algebra of structural numbers, can be conducted as early as during the designing of future functions of the system as well as during the construction of the system. Using method and obtained results can be value for designers of mechanical systems.

Słowa kluczowe

EN

process systems design; polar graphs; structural numbers; reduction of vibrations

PL

projektowanie; systemy mechaniczne; grafy biegunowe; liczby strukturalne; redukcja wibracji

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2007
• Tom: Vol. 23, nr 2
• Strony: 51--54
• Opis fizyczny: Bibliogr. 20 poz., rys.

Twórcy

autor

Białas K.

• Institute of Engineering Processes Automation and Integrated Manufacturing Systems, Mechanical Engineering Faculty, Silesian University of Technology, ul. Konarskiego 18 a, 44-100 Gliwice, Poland,

Bibliografia

• [1] S. Michałowski, Active systems in machines construction, Cracow University of Technology Press, Monograph 171, Cracow 1994 (in Polish).
• [2] A. Buchacz, K. Żurek, Reverse task of active mechanical systems depicted in form of graphs and structural numbers, Monograph 81, Silesian University of Technology Press, Gliwice 2005 (in Polish).
• [3] A. Buchacz, K. Żurek, Selection of active elements reducing vibrations. Proceedings of the 8th Conference on Dynamical Systems Theory and Applications, Łódź, 2005, 863-868.
• [4] K. Żurek, Design of reducing vibration machatronical systems, Comment Worldwide Congress on Materials and Manufacturing Engineering and Technology, Computer Integrated Manufacturing, Gliwice (2005) 292-297.
• [5] K. Białas, Comparison of passive and active reduction of vibrations of mechanical systems, Journal of Achievements in Materials and Manufacturing Engineering 18 (2006) 455-458.
• [6] K. Białas, Synthesis of mechanical systems including passive or active elements reducing of vibrations, Journal of Achievements in Materials and Manufacturing Engineering 20 (2007) 323-326.
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• [17] T. Dzitkowski, A. Dymarek, Synthesis and sensitivity of machine driving systems, Journal of Achievements in Materials and Manufacturing Engineering 20 (2007) 359-362.
• [18] A. Sękala, J. Świder, Hybrid graphs in modelling and analysis of discrete-continuous mechanical systems, Journal of Materials Processing Technology 164-165 (2005) 1436-1443.
• [19] G. Wszołek, Modelling of mechanical systems vibrations by utilisation of GRAFSIM software, Journal of Materials Processing Technology 164-165 (2005) 1466-1471.
• [20] J. Świder, G. Wszołek, K. Foit, P. Michalski, S. Jendrysik, Example of the analysis of mechanical system vibrations in GRAFSIM and CATGEN software, Journal Achievements in Materials and Manufacturing Engineering 20 (2007) 3919-394.