• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Proceedings of the institution of mechanical engineers >A method for contact analysis of revolute joints with noncircular clearance in a planar multibody system
【24h】

A method for contact analysis of revolute joints with noncircular clearance in a planar multibody system

机译：平面多体系统中具有非圆形间隙的旋转关节的接触分析方法

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Journal bearings are generally used to comprise a revolute joint in mechanical systems. Noncircularity and clearance in journal bearing are obvious due to a long time of nonuniform wear. In this regard, a method of analyzing the contact in revolute joints with noncircular clearances in a multibody system is proposed. The revolute joint with noncircular clearance is assumed to be constituted by an elliptic bore and a pin. The method described is not representative of an elliptic bore journal bearing in a detailed manner. This method involves discretizing the geometric profile of the bushing of the revolute joint. By analyzing the relative separations between the discrete points and the geometric center of the pin, the contact area between the bushing and the pin can be judged and the maximum contact depth obtained. Compared with traditional methods, the proposed method has the advantage that it can be used to analyze noncircular contact problems in revolute joints with a clearance. A slider-crank mechanism is used as an example to compare the effects of the geometrical properties of circular and noncircular (elliptical) revolute joints with clearance on the dynamic response of the mechanisms. The results show that clearance joints with noncircular geometry predominantly affect the dynamic stability of a high-speed mechanism. Moreover, the efficiency of the contact analysis and model solving precision are strongly dependent on the number of discrete points in the geometric profile of the joint elements. The size of the joint clearance has a small effect on the solving efficiency of the model.
机译：轴颈轴承通常用于在机械系统中包括旋转接头。由于长时间的不均匀磨损，轴颈轴承中的非圆度和间隙很明显。在这方面，提出了一种分析多体系统中具有非圆形间隙的旋转关节中接触的方法。假定具有非圆形间隙的旋转接头由椭圆孔和销钉组成。所描述的方法不能以详细的方式代表椭圆孔轴颈轴承。该方法涉及离散旋转接头衬套的几何轮廓。通过分析离散点和销钉几何中心之间的相对间距，可以判断衬套和销钉之间的接触面积，并获得最大接触深度。与传统方法相比，该方法的优点是可以用于分析旋转间隙旋转接头的非圆形接触问题。以曲柄滑块机构为例，比较了带有间隙的圆形和非圆形（椭圆形）旋转接头的几何特性对机构动态响应的影响。结果表明，具有非圆形几何形状的游隙关节主要影响高速机构的动态稳定性。此外，接触分析的效率和模型求解的精度在很大程度上取决于关节元素几何轮廓中离散点的数量。关节间隙的大小对模型的求解效率影响很小。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号