Impact Dynamics Analysis of Mobile Mechanical Systems

Sorin Dumitru, Andra Constantin, Cristian Copilusi and Nicolae Dumitru
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Sorin Dumitru: Faculty of Automation, Computers and Electronics, University of Craiova, 200776 Dolj, Romania
Andra Constantin: Faculty of Mechanics, University of Craiova, 200512 Dolj, Romania
Cristian Copilusi: Faculty of Mechanics, University of Craiova, 200512 Dolj, Romania
Nicolae Dumitru: Faculty of Mechanics, University of Craiova, 200512 Dolj, Romania

Mathematics, 2021, vol. 9, issue 15, 1-26

Abstract: The current paper focuses on the impact phenomenon analysis, in the case of multi-body mechanical systems undergoing fast motion, due to the presence of some manufacturing and mounting errors or due to some accident during the transport mechanical systems. Thus, the impact phenomenon was analyzed in two cases, the first one consisting of a two bodies, namely, a free-fall body brought in contact with the other considered fixed in space and the second case, which is a complex one, when the analyzed bodies are components of a multi-body mechanical system. The research main objective is to analyze the impact generated between the two bodies through three methods, i.e., the analytical method, a virtual prototyping method accomplished with MSC Adams software and a method based on finite element analysis with Ansys and Abaqus software. A dynamic model of the impact force was developed, which allows to make a comparison of the numerical results obtained through the abovementioned methods. As a multi-body mechanical system, it was considered a mechanism from an internal combustion engine from which the radial clearance between the piston bolt and connecting rod head of the considered mechanism was analyzed.

Keywords: dynamics impact; finite element; radial clearance; modal dynamic analysis (search for similar items in EconPapers)
JEL-codes: C (search for similar items in EconPapers)
Date: 2021
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