Turbocharger rotor dynamics with foundation excitation |
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Authors: | Guangchi Ying Guang Meng Jianping Jing |
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Institution: | (1) State Key Laboratory of Mechanical System and Vibration, Shanghai JiaoTong University, 800 Dongchuan Rd., 200240 Shanghai, People’s Republic of China |
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Abstract: | To investigate the effect of foundation excitation on the dynamical behavior of a turbocharger, a dynamic model of a turbocharger
rotor-bearing system is established which includes the engine’s foundation excitation and nonlinear lubricant force. The rotor
vibration response of eccentricity is simulated by numerical calculation. The bifurcation and chaos behaviors of nonlinear
rotor dynamics with various rotational speeds are studied. The results obtained by numerical simulation show that the differences
of dynamic behavior between the turbocharger rotor systems with/without foundation excitation are obviously. With the foundation
excitation, the dynamic behavior of rotor becomes more complicated, and develops into chaos state at a very low rotational
speed. |
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Keywords: | Turbocharger Rotor dynamics Foundation excitation |
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