Vibration analysis of mechanical systems with utilisation of GRAFSIM and CATGEN software

TLDR: In this paper, the authors used the matrix hybrid graphs method and matrix block diagrams method for making analysis of mechanical systems vibrations, where the system is represented in the form as a matrix block diagram, and is analyzed in detailed way in the MatlabSIMULINK environment.

Abstract: Purpose: The paper describes the method and corresponding software used for modelling and vibration analysis of mechanical systems. A s an example the study on the modelling of a vibrating system in a form of a passenger car was discussed with determination of the characteristics describing its vibrations and resonance zones. Design/methodology/approach: The software described in the article uses the matrix hybrid graphs method and matrix block diagrams method for making analysis of mechanical systems vibrations. For numerical calculations the system is represented in the form as a matrix block diagram, and is analysed in detailed way in the MatlabSIMULINK environment. Findings: Numerical software packages give possibility to analyse vibrations of mechanical systems or of their parts exposed to kinematic and dynamic excitations. Research limitations/implications: Time responses of the vibrations of the passenger car system model evoked by various types of excitations are presented, as well as the amplitude –frequency –phase characteristics (a-f-p). Originality/value: The paper constitutes the source of information into the theory and practice of mechanical vibrations as well as professional computer software as a tool enabling the determination of the time responses and the a-f-p characteristics of machine and equipment parts.