Shock Response Analysis for a Journal-bearing System by a Results Comparison
Shock response analysis of a journalbearing system with the journal-bearing connection modeled as a spring link in radial direction and a dry contact joint respectively is presented. In the first model, the spring constants representing oilfilm characteristic are determined by eight coefficients. In the second model, the friction forces are calculated using a modified Coulombs friction law. The contact detection points are the integration point and located at Gauss points. Only the contact normal pressure is treated as a Lagrange multiplier. The tangential contact stresses are calculated based on the penalty method. Systems time varying responses are obtained by FEM. A results comparison was performed between spring link model and dry contact model. The main conclusion is that stress distribution is nearly same in the system modeled by the two methods, but the amplitude in the former is smaller than that in the latter.
shock comparison dry contact spring link shock response journal-bearing system
He Shaohua Wu Xinyue
Department of Mechanical Engineering,Naval University of Engineering,Wuhan,China
国际会议
2010 International Conference on Material and Manufacturing Technology(2010材料与制造技术国际会议 ICMMT2010)
重庆
英文
79-84
2010-09-17（万方平台首次上网日期，不代表论文的发表时间）