Wyniki wyszukiwania - BazTech

1

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

Świder J., Wszołek G., Foit K., Michalski P., Jendrysik S.

Journal of Achievements in Materials and Manufacturing Engineering

|

2007

|

Vol. 23, nr 1

23-30

EN

Purpose: The paper describes the method and corresponding software used for modelling and vibration analysis of mechanical systems. As 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 Matlab-SIMULINK 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.

2

Example of the analysis of mechanical system vibrations in GRAFSIM and CATGEN software

Świder J., Wszołek G., Foit K., Michalski P., Jendrysik S.

Journal of Achievements in Materials and Manufacturing Engineering

|

2007

|

Vol. 20, nr 1-2

391-394

EN

Purpose: The scope of the paper is to demonstrate the possibilities of GRAFSIM software used for modelling of vibrations of 2D and three- dimensional linearly coupled mechanical systems. Options of CATGEN application supporting the user in the transfer of data on the model generated in CATIA program to GRAFSIM are also discussed. Design/methodology/approach: For the analysis of mechanical vibrations the software applies the matrix hybrid graphs and block diagrams method. On the grounds of the data derived from the examined dynamical system and entered into the program by its user, matrices characterizing the model are generated. In the course of numerical calculations the system is represented as a block diagram, and exposed to detailed analysis in Matlab-SIMULINK environment. Findings: GRAFSIM and CATGEN software packages enable easy analyses of the vibrations of mechanical systems or of their parts. The tests may be run, for example, in view of the selection of elastic-damping connections between the inertial elements of the system. Research limitations/implications: The paper is focused on modelling of vibrating systems in the form of a passenger car. Time responses of the vibrations of the system model evoked by various types of excitations are presented, as well as the amplitude-frequency-phase characteristics (a-c-f). Originality/value: Valuable source of information for researches into the theory of mechanical vibrations searching for a tool enabling the determination of the time responses and the amplitude -frequency -phase characteristics of machine and equipment parts.

3

Grafy hybrydowe w modelowaniu i analizie drgających układów mechanicznych o dyskretno-ciągłym rozkładzie parametrów ze sprzężeniami

Sękala A., Świder J.

Przegląd Mechaniczny

|

2005

|

nr 5

14-20