润滑槽形接头多体动力学经验摩擦系数公式的回顾与比较

IF 2.6 2区 工程技术 Q2 MECHANICS Multibody System Dynamics Pub Date : 2024-05-10 DOI:10.1007/s11044-024-09988-y
Marco Cirelli, Matteo Autiero, Nicola Pio Belfiore, Giovanni Paoli, Ettore Pennestrì, Pier Paolo Valentini
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引用次数: 0

摘要

近来,许多工业应用都需要创新的节能解决方案。能量损失的主要原因之一是接触面之间的摩擦。为了解摩擦机理,以便在多体模拟中对其进行可靠预测,人们进行了大量研究。20 世纪 50 年代和 60 年代,人们进行了许多实验研究,从而得出了滑动和滚动相对运动下润滑表面的摩擦系数公式。这些公式主要是通过对滚动盘和不同载荷、润滑和运动条件下的实验测量结果进行数学拟合得出的。本文的目的有两个:一方面,回顾了在各种工作条件下计算润滑接触摩擦系数的半经验公式;另一方面,在多体动力学仿真环境中实施并比较了与金属-金属润滑经验摩擦公式相结合的接触力模型。实施经验公式简单且计算效率高,但我们可以评估这些模型在描述润滑接头动态特性方面的性能。为此,我们对带有非理想棱柱形接头的斯考奇轭架和惠特沃思快速回转机构进行了多体模拟。间隙的存在导致系统的动态行为与理想接头不同。模拟输出和计算时间强调了每个摩擦系数模型之间的差异。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

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Review and comparison of empirical friction coefficient formulation for multibody dynamics of lubricated slotted joints

In recent times, many industrial applications have demanded innovative energy-efficient solutions. One of the main causes of energy loss is due to friction between body surfaces in contact. A great amount of research has been aimed at understanding the friction mechanisms to allow for its reliable prediction during multibody simulation. In the 1950s and 1960s, many experimental studies were carried out, leading to the coefficient of friction formulas for lubricated surfaces under a combination of sliding and rolling relative motion. The formulas have been mainly derived by the mathematical fitting of results obtained from experimental measurements on rolling disks and different load, lubricating and kinematic conditions. The purpose of this paper is twofold: on the one hand, it reviews semi-empirical formulas for computing the friction coefficient in lubricated contact under various operating conditions; on the other hand, it implements and compares contact force models coupled with the metal-metal lubricated empirical friction formulas in a multibody dynamics simulation environment. Implementing empirical formulas is straightforward and computationally efficient, but one can evaluate the performance of these models in characterizing the dynamics of the lubricated joint. For this purpose, a multibody simulation of a Scotch yoke and a Whitworth quick return mechanisms with a nonideal prismatic joint are conducted. The existence of clearance causes the dynamic behavior of the system to be different from the ideal joint. The difference between each friction coefficient model is emphasized by simulation output and computation time.

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来源期刊
CiteScore
6.00
自引率
17.60%
发文量
46
审稿时长
12 months
期刊介绍: The journal Multibody System Dynamics treats theoretical and computational methods in rigid and flexible multibody systems, their application, and the experimental procedures used to validate the theoretical foundations. The research reported addresses computational and experimental aspects and their application to classical and emerging fields in science and technology. Both development and application aspects of multibody dynamics are relevant, in particular in the fields of control, optimization, real-time simulation, parallel computation, workspace and path planning, reliability, and durability. The journal also publishes articles covering application fields such as vehicle dynamics, aerospace technology, robotics and mechatronics, machine dynamics, crashworthiness, biomechanics, artificial intelligence, and system identification if they involve or contribute to the field of Multibody System Dynamics.
期刊最新文献
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