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首页> 外文期刊>Proceedings of the institution of mechanical engineers >Application of tabular contact search method to multibody gear dynamics simulation with tooth surface imperfections
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Application of tabular contact search method to multibody gear dynamics simulation with tooth surface imperfections

机译：表格接触搜索方法在齿面缺陷多体齿轮动力学仿真中的应用

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摘要

In this investigation, an integrated numerical procedure for multibody gear dynamics simulation is developed using the tabular contact search method. Existing online contact search algorithms, which are widely used in multibody dynamics simulation, lead to extensive computational burden if detailed tooth surface geometry described by CAD or measured data points are considered with geometric imperfections. In the numerical procedure developed in this study, the contact geometry analysis based on the nonconformal contact condition is performed using the detailed tooth surface description prior to the dynamic simulation, and then the contact point as well as the tooth geometry at the contact point stored in the look-up contact tables are used to determine mesh forces in the multibody gear dynamics simulation. This allows for detecting multi-point contact without any iterative procedures, and the contact point on the back side of the tooth can also be considered by switching look-up contact tables in a straightforward manner. Furthermore, it is demonstrated that discontinuous contact event caused by the tooth surface imperfection can be predicted using a combined nodal and nonconformal contact search algorithm developed in this study. Several numerical examples are presented in order to demonstrate the use of the numerical procedure developed in this investigation.
机译：在这项研究中，使用表格接触搜索方法开发了用于多体齿轮动力学仿真的集成数值程序。如果考虑到CAD描述的详细牙齿表面几何形状或测得的数据点存在几何缺陷，那么现有的在线接触搜索算法将广泛地应用于多体动力学仿真中，从而导致大量的计算负担。在本研究开发的数值程序中，在动态模拟之前，先使用详细的齿面描述对基于非等形接触条件的接触几何进行分析，然后将接触点以及在接触点处的牙齿几何存储在查找接触表用于确定多体齿轮动力学仿真中的啮合力。这允许在无需任何迭代程序的情况下检测多点接触，并且还可以通过以直接方式切换查找接触表来考虑牙齿背面的接触点。此外，已证明使用本研究开发的节点和非保形接触搜索算法可以预测由牙齿表面缺陷引起的不连续接触事件。给出了几个数值示例，以说明在此研究中开发的数值程序的使用。

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