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首页> 外文会议>ASME International Design Engineering Technical Conferences and Computers and Information in Engineering Conference 2007 >INFLUENCE OF TENSIONER DRY FRICTION ON THE VIBRATION OF BELT DRIVES WITH BELT BENDING STIFFNESS
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INFLUENCE OF TENSIONER DRY FRICTION ON THE VIBRATION OF BELT DRIVES WITH BELT BENDING STIFFNESS

机译：张紧器干摩擦对皮带弯曲刚度的皮带传动振动的影响

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摘要

A model of dry friction tensioner in a belt-pulley system considering transverse belt vibration is developed, and the influence of the dry friction on the system dynamics is examined. The discretized formulation is divided into a linear subsystem including linear coordinates and a nonlinear subsystem addressing tensioner arm vibration, which reduces the dimension of the iteration matrices when employing the harmonic balance method. The Coulomb damping at the tensioner arm pivot mitigates the tensioner arm vibration but not necessarily the vibrations of other system components. The extent of the mitigation varies for different excitation frequency ranges. The critical amplitude of the dry friction torque beyond which the system operates with a locked arm is determined analytically. Superharmonic resonances are observed in the responses of the generalized span coordinates but their amplitudes are small. The energy dissipation at the tensioner arm hub is discussed, and the stick-slip phenomena of the arm are reflected in the velocity reversals near the arm extreme location. Dependence of the span tension fluctuations on Coulomb torque is explored.
机译：建立了皮带轮系统中考虑横向皮带振动的干式摩擦张紧器模型，并研究了干式摩擦对系统动力学的影响。离散化的公式分为包含线性坐标的线性子系统和解决张紧器臂振动的非线性子系统，这在采用谐波平衡方法时减小了迭代矩阵的维数。张紧器臂枢轴处的库仑阻尼减轻了张紧器臂的振动，但不一定减轻其他系统组件的振动。对于不同的激励频率范围，缓解程度有所不同。通过分析确定干摩擦扭矩的临界振幅，超过该临界振幅时，系统将使用锁定臂进行操作。在广义跨度坐标的响应中观察到超谐共振，但是其幅度很小。讨论了张紧器臂毂处的能量耗散，并且臂的粘滑现象反映在臂极端位置附近的速度反转中。研究了跨度张力波动对库仑转矩的依赖性。

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