噪声与振动控制2017，Vol.37Issue(4)：90-94,120,6.DOI:10.3969/j.issn.1006-1355.2017.04.018
车下悬吊系统长期服役振动特性及减振研究
Study on Vibration Characteristics and Attenuation of Carbody's Underneath Suspended Systems in Long-term Service
摘要
Abstract
In order to study the vibration characteristics of carbody's underneath suspended systems in long-term service, the vibration characteristics of a carbody and its equipment in a single re-profile cycle are analyzed. Results of the testing show that the lateral vibrations of the carbody and the underneath equipment vary obviously. Then, a rigid-flexible coupling dynamics model is established with the carbody's elasticity considered. The influence of the suspension parameters on the vibration reduction of the carbody is analyzed. The simulation results show that the lateral vibration of the carbody varies significantly in the range of 50-100 thousand kilometers. When the lateral suspension frequency of the carbody's underneath suspended system is close to the first-order lateral bending frequency, the effect of the carbody's vibration reduction becomes most obvious. Only in the case that the suspension frequency is in the low frequency range, the damping ratio is of significant effect. The effect of the mass of the underneath equipment is mainly manifested in the later period of the re-profile cycle. The lateral vibration of the carbody in long-term service can be effectively reduced by properly selecting the suspension parameters of the carbody's underneath suspended systems.关键词
振动与波/车下悬吊系统/弹性车体/悬挂参数/车体减振/长期服役Key words
vibration and wave/carbody's underneath suspended systems/elastic carbody/suspension parameter/carbody vibration reduction/long-term service分类
交通工程引用本文复制引用
匡成骁,曾京,汪群生..车下悬吊系统长期服役振动特性及减振研究[J].噪声与振动控制,2017,37(4):90-94,120,6.基金项目
国家自然科学基金资助项目(U1334206、51475388) （U1334206、51475388）
中国铁路总公司科技研究开发计划资助项目(2016J001-B) （2016J001-B）
科技支撑计划(2015BAG13B01-03) （2015BAG13B01-03）
