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A new process damping model for chatter vibration |
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| Authors: | Erol Turkes |
| Affiliation: | a Dumlup?nar University, Department of Mechanical Engineering, Tavsanli Yolu 10. Km, Kutahya, Turkey b Eskisehir Osmangazi University, Department of Mechanical Engineering, Bati Meselik, Eskisehir, Turkey c Mechanical Department, Technical Science College, Selcuk University, 42031 Konya, Turkey |
| Abstract: | This paper presents a new analytical process damping model (PDM) and calculation of Process Damping Ratios (PDR) for chatter vibration for low cutting speeds in turning operations. In this study a two degree of freedom complex dynamic model of turning with orthogonal cutting system is considered. The complex dynamic system consists of dynamic cutting system force model which is based on the shear angle (φ) oscillations and the penetration forces which are caused by the tool flank contact with the wavy surface. Depending on PDR, the dynamic equations of the cutting system are described by a new mathematical model. Variation and quantity of PDR are predicted by reverse running analytical calculation procedure of traditional Stability Lobe Diagrams (SLD). Developed mathematical model is performed theoretically for turning operations in this study and simulation results are verified experimentally by cutting tests. |
| Keywords: | Analytical calculation Chatter vibration Process damping |
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