Modeling and Analysis of Nonlinear Friction Vibration of V-ribbed Belt
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摘要: 为了研究汽车多楔带的非线性摩擦振动，首先建立了多楔带非线性摩擦振动的二自由度模型，通过求解系统特征值，分析了非线性刚度和张紧力对平衡点处局部稳定性的影响。其次，对振动过程中带与带轮的分离和接触状态进行数值分析，研究了非线性刚度和张紧力对多楔带振动的影响。数值分析结果表明：非线性刚度和张紧力对系统稳定性的影响是复杂的，随着非线性刚度的增加，分岔点对应的临界摩擦系数减小，多楔带的振动幅值逐渐减小，系统的振动稳定性逐步提高，但是过大的非线性刚度会使分离时的振动产生较大振幅，影响系统的稳定性，研究结果为多楔带摩擦振动的控制提供了理论基础。Abstract: In order to study the nonlinear frictional vibration of automotive multi-ribbed belts, firstly, a two-degree-of-freedom model of V-ribbed belt nonlinear friction vibration is established. The influence of nonlinear stiffness and preload force on the local stability of the equilibrium point is analyzed by solving the eigenvalue of the system. Secondly, the numerical analysis of the separation and contact state of the belt and the pulley during the vibration process is carried out, and the influence of nonlinear stiffness and preload force on the vibration of the V-ribbed belt is studied. The results of numerical analysis show that the effect of nonlinear stiffness and preload force on system stability is complex. With the increase of nonlinear stiffness, the critical coefficient of friction corresponding to the fork point decreases, the vibration amplitude of the V-ribbed belt decreases gradually, and the vibration stability of the system is gradually improved. However, the excessive nonlinear stiffness will cause large amplitude of the vibration during separation, which will affect the stability of the system. This study provides a theoretical basis for the control of the frictional vibration of the V-ribbed belt.
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Key words:
- nonlinear /
- stiffness /
- preload force /
- stability /
- frictional vibration
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