A new contact force model for revolute joints considering elastic layer characteristics effects

IF 4.3 2区工程技术 Q1 ACOUSTICS Journal of Sound and Vibration Pub Date : 2024-09-27 DOI:10.1016/j.jsv.2024.118743

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引用次数: 0

Abstract

The contact forces generated during the motion of revolute joints with clearances significantly impact the dynamic performance of mechanisms, making it essential to develop an accurate contact force model. Traditional contact models often neglect the influence of elastic layers or assume that the bushing thickness is equal to its radius, which limits their applicability. To address the dynamic contact problem in revolute joints with small clearances, this study employs an improved Winkler elastic foundation model and introduces an elastic layer correction coefficient to refine the static contact model. The model's validity is verified using the finite element method. Building on this, a new contact force model is proposed, incorporating the optimal damping term from multiple continuous contact models. Finally, experimental validation is conducted using the crank-slider mechanism and typical applications in the Variable Stator Vane (VSV) mechanism. The results demonstrate that the proposed contact force model effectively predicts the dynamic characteristics of mechanisms with clearances.

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考虑弹性层特征效应的新旋卷接头接触力模型

有间隙的滚动轴承在运动过程中产生的接触力会对机械装置的动态性能产生重大影响，因此开发精确的接触力模型至关重要。传统的接触模型通常会忽略弹性层的影响，或假设衬套厚度等于半径，从而限制了其适用性。为了解决具有小间隙的外齿圈接头的动态接触问题，本研究采用了改进的 Winkler 弹性基础模型，并引入了弹性层修正系数来完善静态接触模型。该模型的有效性通过有限元法进行了验证。在此基础上，结合多个连续接触模型的最佳阻尼项，提出了一个新的接触力模型。最后，利用曲柄滑块机构和可变定子叶片（VSV）机构中的典型应用进行了实验验证。结果表明，所提出的接触力模型能有效预测有间隙机构的动态特性。

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来源期刊

Journal of Sound and Vibration 工程技术-工程：机械

CiteScore

9.10

自引率

10.60%

发文量

551

审稿时长

69 days

期刊介绍： The Journal of Sound and Vibration (JSV) is an independent journal devoted to the prompt publication of original papers, both theoretical and experimental, that provide new information on any aspect of sound or vibration. There is an emphasis on fundamental work that has potential for practical application. JSV was founded and operates on the premise that the subject of sound and vibration requires a journal that publishes papers of a high technical standard across the various subdisciplines, thus facilitating awareness of techniques and discoveries in one area that may be applicable in others.