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Pulley torsional vibration damper characterization

机译：皮带轮扭振减振器特性

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摘要

The pulleys of an automotive front engine accessory drive are driven in rotation by a poly-V belt itself driven by the crankshaft pulley. This driving pulley is often used as a torsional vibration damper (TVD) for the crankshaft. Three elements compose the pulley: the hub, a rubber ring and an inertia steel ring with v-ribs on its outer diameter. Although the crankshaft torsional vibrations are dampen, they are transmitted to the belt transmission and therefore to the driven accessories. Hence, recent developments have conducted to add a decoupling function to these pulleys. The decoupling is realized by an other rubber ring. The TVD pulley components are designed in order to dampen crankshaft vibrations over a given frequency range, i.e. stiffness and damping characteristics are determined for the rubber ring. These expected characteristics have to be checked after manufacturing for product certification but also to give some real measured data input for simulation models. An experimental characterization method is presented and discussed for the determination of the stiffness and damping coefficients of the rubber rings used in such pulley. The test rig developed is temperature controlled in order to show the influence of the temperature.
机译：汽车前发动机附件驱动器的皮带轮由本身由曲轴皮带轮驱动的V型皮带驱动旋转。该主动皮带轮通常用作曲轴的扭振减振器（TVD）。滑轮由三个元素组成：轮毂，橡胶圈和惯性钢圈，其外径上带有v型肋。尽管曲轴扭转振动得到了抑制，但它们传递到皮带传动装置上，并因此传递到从动附件上。因此，最近进行了一些开发以向这些皮带轮增加去耦功能。去耦通过另一个橡胶环实现。设计TVD皮带轮组件是为了在给定的频率范围内衰减曲轴振动，即确定橡胶环的刚度和阻尼特性。这些预期特性必须在制造后进行检查以进行产品认证，而且还要为仿真模型提供一些实际的测量数据输入。提出并讨论了一种实验表征方法，用于确定这种皮带轮中使用的橡胶环的刚度和阻尼系数。为了显示温度的影响，对开发的测试台进行了温度控制。

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