共查询到20条相似文献,搜索用时 125 毫秒
1.
本文在总结高速球轴承运动学、动力学研究的基础上,指出C.R.Meeks的保持架六自由度动力学分析模型是一种经济有效的球轴承分析模型。 相似文献
2.
3.
4.
5.
利用ADAMS软件建立了套圈、钢球和保持架的角接触球轴承多体接触动力学仿真模型,在不同转速、径向力和引导游隙下,运用ADAMS软件仿真分析了角接触球轴承的动力学性能、保持架的波动冲击和稳定性,讨论了角接触球轴承的接触力、保持架的角加速度及其质心运动轨迹等的仿真结果。研究结果表明,保持架的波动和稳定性与角接触球轴承的运动速度、引导间隙和载荷等因素相关。多体动力学模型和分析结果为不同工况下使用的角接触球轴承的动态设计和疲劳寿命提供了参考方法。 相似文献
6.
7.
8.
在球轴承测振状态下振系动力学模型的基础上,分析振系的传递函数并进行实验验证,得出以下结论:(1)球轴承振系的响应传递函数对轴承振动响应有重要影响;(2)球轴承尺寸越大,其振系固有频率越低;(3)球轴承振系在不同频率的响应性能各不相同。 相似文献
9.
高速球轴承球/保持架碰撞模型与冲击特性研究 总被引:1,自引:0,他引:1
针对航空发动机主轴球轴承的结构特点,建立了高速球轴承球/保持架碰撞的力学模型,并对球与保持架的冲击特性进行了研究。结果表明,球/保持架冲击载荷受多种因素的影响,并体现为碰撞速度,冲击载荷与速度成正比;碰撞弹性变形对于缓解冲击具有重要作用。 相似文献
10.
11.
推力球轴承是被广泛应用的支承机械,用于承受转速较低的轴向载荷.它是由上下座圈、保持架和球体组成的可分离结构,分为单向推力球轴承和双向推力球轴承两种.着重分析了不同尺寸、形状的球形滚动体和橄榄球形滚动体对接触情况下的应力和变形量的影响.使用Pro/E建立实体模型,导入ANSYS进行数值模拟和计算.通过对获得的数值模拟结果和赫兹理论解进行对比,结果表明有限元分析是比较准确而且可靠的.最大接触应力和弹性趋近量取决于滚动体与滚道接触处的主曲率和、主曲率差,与滚动体形状、体积没有直接联系. 相似文献
12.
用有限元法对空心球轴承的接触面形状和尺寸、接触应力进行了模拟计算,研究了空心球轴承的承栽性能,不同空心度对球轴承承栽性能的影响进行了分析,为空心球轴承的设计与应用提供指导。 相似文献
13.
14.
15.
A new bearing fault diagnosis method based on auto term window (ATW) method is proposed in this paper. Ball bearing is the foremost important and also much easier to be damaged component in the rotation machinery. Vibration signature analysis of machine components is a commonly fault detect technique employed in ball bearing systems. The new fault diagnosis method proposed in this paper is applied to extract fault features in bearing vibration signals. On the base of the Wigner–Ville distribution (WVD) analysis of the bearing signal, the ATW method can not only suppress cross terms effectively, but also strengthen the energy of the auto terms and enhance the feature extraction effect, which is important in the following fault diagnosis research. The ball bearing fault experiment results proved the effectiveness of the ATW method in the last section of this paper. 相似文献
16.
17.
18.
Wei Bian Zhenhua Wang Juntang Yuan Weiwei Xu 《Journal of Mechanical Science and Technology》2016,30(1):297-306
The thermal-mechanical character, which is difficult to ensure because of the lack of a corresponding theory and tool, has a significant effect on the dynamics of bearings. It even leads to a sudden failure of bearings in a working situation. In this research, a thermal deformation model was established, based on the analysis of temperature effect on the basic size of angular contact ball bearing. And the transmission from rolling size to bearing axial stiffness was explicit. On the basis of the variation of Hertz contact stiffness and the change of initial contact angle of angular contact ball bearing caused by temperature rise, a “Thermo- mechanical” model of bearing was proposed. According to this model, using the corresponding calculation procedure programmed by MATLAB, the effect of bearing temperature on the axial stiffness has been studied. And the correctness of this model was verified with experiments. Some design suggestions have been made for the decision of bearing preload: to prevent the bearing failure caused by overheating. 相似文献
19.
20.
针对滚动轴承套圈硬车削加工过程中表面质量存在的问题,对硬车削过程中切削用量和刀具参数对表面粗糙度的影响进行了研究,采用CBN刀具进行了6205滚动轴承套圈的硬车削加工试验,将进给量、切削速度、切削深度和刀尖圆弧半径作为试验因子,通过正交试验分析了它们对零件加工后表面粗糙度的影响规律,并归纳出了该试验范围内的最佳切削用量和刀具参数组合。研究结果表明,进给量对表面粗糙度的影响最大,刀尖圆弧半径对表面粗糙度的影响次之,切削速度对表面粗糙度的有一定影响,切削深度对表面粗糙度的影响非常小。 相似文献