滚动轴承非线性接触噪声分析

发布时间：2018-01-04 11:13

本文关键词：滚动轴承非线性接触噪声分析　出处：《太原科技大学》2011年硕士论文　论文类型：学位论文

【摘要】：滚动轴承是应用最为广泛的的精密机械零件,被誉为工业的关节。随着滚动轴承振动与噪声对环境的污染和静音机械技术的迅猛发展及其产品的不断涌现,工作主机对滚动轴承的噪声性能指标要求越来越高,尽快寻找出轴承噪声机理已成为当务之急。由于滚动轴承噪声机理极其复杂,在研究其特性时往往为了线性的计算方便忽略了许多非线性因素,使得滚动轴承噪声机理仍是公认的尚不成熟的轴承基础理论之一。本文从声学角度入手,重点考虑了滚动轴承结构的非线性接触,对深沟球轴承的噪声机理进行了分析研究,其内容主要包括以下四方面: 1.以固体接触力学为基础,应用非线性动力学理论对深沟球轴承建立了振动模型,并利用声学理论和结构声学与声辐射相关知识,构造出了深沟球轴承的耦合噪声模型。 2.运用matllab数学计算软件,通过数值分析的方法,对影响深沟球轴承噪声的不同物理参数进行了研究,着重分析了不同转速下轴承滚道、滚动体的振动速度和振动加速度与噪声声压级之间的关系;针对深沟球轴承表面缺陷,分析了波纹度的波数、损伤尺寸等参数与噪声之间的关系。 3.根据非线性系统自适应控制理论对深沟球轴承振动与噪声进行了有效地控制,使滚动轴承从受外界干扰情况下,自适应地返回稳定工作状态。 4.结合基于模拟退火的微粒群算法对深沟球轴承的噪声进行了优化,与原始设计相比声压级降低了13.3%,取得了明显的效果。本文为滚动轴承振动与噪声机理的研究开辟了一条新的思路,提供了一种新的方法。为突破滚动轴承低噪声技术瓶颈奠定了夯实的理论基础,对于轴承行业减振降噪的发展起到了重要的推动作用和借鉴意义。
[Abstract]:The rolling bearing is the most widely used precision machinery parts, known as the industrial joint. With the rapid development and rolling bearing vibration and noise pollution to the environment and mute mechanical technology continue to emerge, the host of the work index of noise performance of rolling bearings are increasingly demanding, as soon as possible to find out the mechanism of bearing noise has become a pressing matter of the moment. As a result of the rolling bearing noise mechanism is extremely complex, in the study of its characteristics are often in order to calculate conveniently ignores many nonlinear factors, one of which is still recognized as the rolling bearing noise mechanism is still not mature. This paper from the basic theory of bearing acoustic perspective, focus on the bearing structure of the nonlinear contact, noise mechanism the deep groove ball bearing is analyzed, the main contents include the following four aspects:
1., based on the solid contact mechanics and the nonlinear dynamics theory, a vibration model of deep groove ball bearings is established. Based on the knowledge of acoustic theory and structural acoustics and radiation, a coupled noise model of deep groove ball bearings is constructed.
2. using the matllab mathematical calculation software, through numerical analysis method, the effects of different physical parameters of deep groove ball bearing noise is studied, emphatically analyzes the different speed of bearing raceway, the relationship between rolling vibration velocity and vibration acceleration and noise level; for deep groove ball bearing surface defects, analysis of the wave number of wave the relationship between the damage parameters such as size and noise.
3., according to the adaptive control theory of nonlinear system, the vibration and noise of deep groove ball bearings are effectively controlled, enabling rolling bearings to return to stable working state adaptively under external interference.
4., combined with simulated annealing, particle swarm optimization algorithm is used to optimize the noise of deep groove ball bearings. Compared with the original design, the sound pressure level is reduced by 13.3%, which has achieved obvious results.
This paper provides a new way for the research of rolling bearing vibration and noise mechanism, provides a new method. Lays a solid theoretical foundation for the breakthrough of rolling bearing technology bottleneck for the development of low noise, vibration and noise reduction of the bearing industry has played an important role and significance.

【学位授予单位】：太原科技大学
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：TH133.33;TB535

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