水润滑橡胶合金轴承动态特性分析

发布时间：2018-05-11 03:16

本文选题：水润滑橡胶合金轴承 + 模态　；参考：《重庆大学》2011年硕士论文

【摘要】：水润滑橡胶合金轴承,是一种能减振、降噪耐磨的特种轴承,由于采用水作润滑剂和橡胶合金材料特殊的物理化学性质,具有了良好的润滑特性和独特的资源节约与环境友好优势,在水下工作环境得到了广泛的使用。随着石油、贵重金属材料价格的上涨及环境的日益恶化,基于资源节约和环境友好的创新设计理论、方法和技术,越来越受到人们的重视。通过轴承动态特性的振动研究,对其进行分析、控制和优化,掌握其结构、材料参数对其运行品质的影响,具有很重要的理论意义和实际价值;为此,本文在参考国内外关于水润滑橡胶轴承研究的重要文献的基础上,应用有限元分析软件对水润滑橡胶合金轴承进行了振动和噪声分析,并给出了水润滑橡胶合金轴承减振降噪的方法。具体研究内容概括如下: ①介绍了水润滑橡胶合金轴承研究现状和发展趋势,从Reddy理论出发,对其振动方程进行了理论推导,为轴承振动分析提供了理论基础。 ②建立了水润滑橡胶合金轴承三维实体模型并对各部件划分网格,得到其有限元模型后对其进行模态分析,讨论了橡胶和铜管对模态的影响。 ③对轴承进行了谐响应分析和瞬态响应分析,对水润滑橡胶合金轴承铜套、结合面和橡胶层分别进行了分析研究,得到轴承的响应特性和规律。 ④改变轴承的材料参数和结构参数对轴承进行固有频率和应力分析,通过对比得到轴承的降振措施,从而为优化轴承结构,改善轴承运行性能和提高轴承的寿命提供工程参考。 ⑤利用复特征值理论,对水润滑橡胶合金轴承系统进行了噪声分析,讨论了水润滑橡胶合金轴承不同结构参数对噪声的影响,提出了通过改变其结构参数降低噪声的方法。本文内容得到国家自然科学基金面上项目“大尺寸高比压水润滑橡胶合金轴承的创新设计理论与方法”(项目编号:50775230)的资助,拟通过上述研究对水润滑橡胶合金轴承的振动特性和噪声研究方法提供新的借鉴。
[Abstract]:Water lubricated rubber alloy bearing is a kind of special bearing which can reduce vibration and reduce noise and wear. Because of its special physical and chemical properties, water is used as lubricant and rubber alloy material. It has good lubricating property, unique resource saving and environment friendly advantage, and has been widely used in underwater working environment. With the price of oil and precious metal materials rising and the environment deteriorating day by day, people pay more and more attention to innovative design theory, method and technology based on resource saving and environment friendly. It is of great theoretical significance and practical value to analyze, control and optimize the bearing dynamic characteristics, to master the influence of its structure and material parameters on its running quality. On the basis of reference to the domestic and foreign important literatures on the study of water-lubricated rubber bearings, the vibration and noise analysis of water-lubricated rubber alloy bearings are carried out by using finite element analysis software. The method of reducing vibration and noise of water lubricated rubber alloy bearing is given. The specific studies are summarized as follows: The main contents are as follows: 1. The present situation and development trend of water lubricated rubber alloy bearing are introduced. Based on Reddy theory, the vibration equation is derived theoretically, which provides a theoretical basis for bearing vibration analysis. (2) the three-dimensional solid model of water-lubricated rubber alloy bearing is established, and each component is meshed. The modal analysis is carried out after obtaining its finite element model, and the influence of rubber and copper pipe on the modal is discussed. (3) the harmonic response analysis and transient response analysis of the bearing are carried out, and the bearing response characteristics and rules are obtained by analyzing the copper sleeve, the bonding surface and the rubber layer of the water lubricated rubber alloy bearing. (4) the natural frequency and stress of bearing are analyzed by changing the material and structure parameters of bearing, and the vibration reduction measures of bearing are obtained by comparison, which provides engineering reference for optimizing bearing structure, improving bearing performance and prolonging bearing life. Using the theory of complex eigenvalue, the noise of water lubricated rubber alloy bearing system is analyzed, the influence of different structure parameters of water lubricated rubber alloy bearing on noise is discussed, and the method of reducing noise by changing its structure parameter is put forward. The content of this paper is supported by the project of "innovative Design Theory and method of large size and High specific pressure Water Lubricated Rubber Alloy bearings" (Project No.: 5050775230), sponsored by the National Natural Science Foundation of China. This study will provide a new reference for the vibration characteristics and noise research of water lubricated rubber alloy bearings.
【学位授予单位】：重庆大学
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：TH133.3

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