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Belt drive has been widely used in various types of mechanical transmission. Because the belt is sensitive to the pretension, the tension force directly affects the vibration characteristics of the belt, in order to reduce the impact of the pretension on the belt drive, the finite element software is used to simulate the belt, the effect of the change in pretension on the frequency and amplitude of the transverse vibration in the belt drive is obtained. Reasonable selection of the pretension can reduce the vibration amplitude of the belt, reduce the transmission noise and improve the service life of the belt. This method can provide reference for vibration characteristics analysis and system design optimization of the belt drive structure.

An approach of FEM analysis of the influence of pretension on the transverse vibration of belt drive