首页 | 本学科首页   官方微博 | 高级检索  
     


Analysis of damping characteristics of squeeze films under dynamic (cyclic) loading
Authors:Y.K. Younes  M.O.A. Mokhtart
Affiliation:1. Helwan University, Mataria, Cairo, Egypt;2. Cairo University, Cairo, Egypt
Abstract:This paper presents an analytical study of the damping characteristics of circular discs subjected to dynamic loads. Assuming a circular hydrostatic thrust bearing describing different geometrical configurations and surface texture irregularities (on both the macro- and micro-scales) and subjected to sinusoidal harmonic excitations, an analytical formulation to identify the oil film thickness variation as a function of damping loads is proposed. The Reynolds equation in the discretized form has been solved numerically using the tdma (Thomas Algorithm). Such a direct technique has proved to be reliable in solving similar problems and minimizing computational time compared with conventional iterative procedures. Compared to the performance of a flat and smooth circular disc, results indicated that the micro- and macro-surface undulations play a major role in dictating the squeeze action damping characteristics
Keywords:externally-pressurized bearings  oil films  surface texture  dynamic loading  mathematical analysis
本文献已被 ScienceDirect 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号