排序方式: 共有2条查询结果,搜索用时 0 毫秒
1
1.
Misalignment analysis of journal bearing influenced by asymmetric deflection, based on a simple stepped shaft model 总被引:1,自引:0,他引:1
Zhen-peng He Jun-hong Zhang Wei-song Xie Zhou-yu Li Gui-chang Zhang 《浙江大学学报(A卷英文版)》2012,13(9):647-664
The effects of journal misalignment on a journal bearing caused by an asymmetric rotor structure are presented in this study.A new model considering the asymmetric deflection is applied.Also,the thermo-hydrodynamic of the oil film in the journal bearing and straightforward elasticity theory are considered in the analysis.Based on the structure stiffness equivalent characteristic,a simple stepped shaft can reflect the entire complex structure model.The existing lubrication model,which does not consider this angle component,is not very precise for journal bearings.Film pressure,misalignment angle,velocity field,oil leakage,and temperature field were calculated and compared in the journal bearing analysis.The results indicate that bearing performances are greatly affected by misalignment caused by the asymmetric structure.A simple stepped shaft can effectively represent a misaligned journal bearing in a rotor-bearing system. 相似文献
2.
CHANSONHubert GONZALEZCarlosA. 《浙江大学学报(A卷英文版)》2005,6(3):243-250
INTRODUCTION The stepped channel design has been used fomore than 3500 years. Greek and Minoan engineerswere probably the first to design an overflow steppedweir and stepped storm waterways respectively(Chanson, 2001). Later, Roman, Moslem, Mughaand Spanish designers used a similar technique. Thesteps increase significantly the rate of energy dissipation taking place on the channel face, reducing thesize of the required downstream energy dissipationand the risks of scouring. Rec… 相似文献
1