Analysis and simulation of nonlinear self-excited vibrations in turning

• Autorzy: Zeleny J. , Repak T. , Fojtu P.
• Języki publikacji: EN

Abstrakty

EN

Commonly applied theories of self-excited vibrations in machine tools are prevailingly based on frequency domain analysis of linear models and are devoted in most cases only to evaluation of stability limits of strictly linear systems. In this way, the behaviour of more stable or more unstable systems cannot be studied and analyzed. Certain important nonlinear effects cannot be studied as well for limitations connected with classical representation of systems only in the frequency domain. Evaluation of stability by analysis of nonlinear systems in time domain has not been applied until now. The paper shows a new approach based on interpretation of the self-excited vibration systems as nonlinear servo-systems. With this approach, linear and nonlinear systems of any degree of stability can be studied by combination of frequency and time-domain methods. This can considerably contribute to better understanding of complex phenomena in various regimes and special situations.

Słowa kluczowe

EN

machine tool; machining; machining process; self-excited vibrations

• Wydawca: Wydawnictwo Wrocławskiej Rady FSNT NOT
• Czasopismo: Journal of Machine Engineering
• Rocznik: 2008
• Tom: Vol. 8, No. 4
• Strony: 68--79
• Opis fizyczny: Bibliogr. 7 poz., rys.

Twórcy

autor

Zeleny J.

• Head of the research group: Machine tools of new concepts", RCMT - Research Center of Manufacturing Technology, Prague, Czech Republic

autor

Repak T.

• Researchers, RCMT - Research Center of Manufacturing Technology, Prague, Czech Republic

autor

Fojtu P.

• Researchers, RCMT - Research Center of Manufacturing Technology, Prague, Czech Republic

Bibliografia

• [1] TŁUSTY J., SPACEK. A., Self excited vibrations in machine tools (in Czech), Publications of the Czech Acadcmy of Sciences, 1954, Prague
• [2] TŁUSTY J., Procedure of machine tool frame calculation, Czechoslovak Heavy Industry, No 1, 1954, Prague
• [3] DANEK O., POLACEK M., SPACEK L., TŁUSTY J., Selbsterregte Schwingungen an Werkzeug-maschinen, 1962, VEB Verlagtechnik, Berlin
• [4] TŁUSTY J., POLACEK M., The stability of the machine tool against self-excited vibrations in machining, Proceedings of the International research in production , 1963, ASME New York
• [5] TOBIAS S.A., Machine tool vibration, Blackie and Son, 1965, London
• [6] TŁUSTY J., ISMAIL F., Special aspects of chatter in milling, ASME Journal of vibrations in Design, 1983, New York
• [7] ALTINTAS Y., BUDAK E., Analytical prediction of stability lobes in milling. Annals of the CIRP, 1995, 44/1