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Synthesis of mechanical systems including passive or active elements reducing of vibrations

Author(s): K. Białas

Journal: Journal of Achievements in Materials and Manufacturing Engineering
ISSN 1734-8412

Volume: 20;
Issue: 1-2;
Start page: 323;
Date: 2007;
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Keywords: Process systems design | Polar graphs | Structural numbers | Synthesis

Purpose: In this work there is presented basic method of synthesis of active and passive mechanical systemsrealization. The principal aim of the research is to work out a method of structure and parameters searchingi.e. structural and parametric synthesis of a discrete model of mechanical system on the base of desiredrequirements. The requirements refer to dynamic features of the system, particularly its frequency spectrum.The purpose of this paper is also comparison of reduction of vibrations in mechanical systems by use the passiveand active elements.Design/methodology/approach: In this work used unclassical method of polar graphs and their relationshipwith the algebra of structural numbers. This method enables analysis without limitations depending on kind andnumber of elements of complex mechanical system using electronic calculation technique.Findings: Use of active elements into the elimination of vibration offers the possibility to overcome thelimitations of the methods of passive elimination of vibration, such as, in particular, low efficiency in case oflow-frequency vibration.Practical implications: The results represented this work in form of polar graphs extend the tasks of synthesisto other spheres of science e.g. electric systems. The practical realization of the reverse task of dynamicsintroduced in this work can find uses in designing of machines with active and passive elements with therequired frequency spectrum.Originality/value: Thank to the approach, an unclassical method of polar graphs and their relationship withthe algebra of structural numbers, can be conducted as early as during the designing of future functions of thesystem as well as during the construction of the system.
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