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STUDY OF THE STICK-SLIP TRANSITION OF NEWTON'S CRADLE WITH FRICTION

机译:牛顿摩擦支座的滑移过渡研究

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This work uses a new discrete approach to analyze the stick-slip transition of Newton's cradle with frictional contact. The consideration of friction here leads to a simultaneous, multiple point, indeterminate collision. This work strictly adheres to the assumptions of rigid body modeling in conjunction with the notion that the configuration of the system are constant in the short time span of the collision, which enforces a kinematic relationship between the impact points. The post-impact velocities are determined by using the work-energy relationship of a collision and an energetic coefficient of restitution (ECOR) to model energy dissipation. A three and six degree-of-freedom (DOF) model of the system is considered in this work to examine the stick-slip transition and simulate the post-impact behavior. Simulations are conducted for each model using different coefficients of friction (COFs). The results obtained are compared to theoretical and experimental results reported in other works.
机译:这项工作使用一种新的离散方法来分析牛顿式摇架在摩擦接触下的粘滑过渡。此处考虑摩擦会导致同时发生的多点不确定的碰撞。这项工作严格地遵循了刚体建模的假设,并认为系统的配置在碰撞的短时间范围内是恒定的,这在冲击点之间建立了运动学关系。碰撞后的速度是通过使用碰撞的功能关系和高能恢复系数(ECOR)来模拟能量耗散来确定的。在这项工作中考虑了系统的三自由度(DOF)和六自由度(DOF)模型,以检查粘滑过渡并模拟撞击后的行为。使用不同的摩擦系数(COF)对每个模型进行仿真。将获得的结果与其他工作中报告的理论和实验结果进行比较。

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