Modal Experiment Research on Fluid-solid Coupling Vibration of Hydraulic Long-straight Pipeline of Shield Machine
The hydraulic long-straight pipeline system of the shield machine is to be studied in this paper. Modal parameters of the hydraulic long-straight pipeline whose length is 8m under three kinds of spans (single span, double spans and four spans) were measured and analyzed. Considering the inherent vibration characteristics of the shield machine, we limited the natural frequency of the multi-span long straight pipeline studied within the range of 0~ 200Hz.What the experiment shows is as follows: Firstly, the natural frequency of the hydraulic long-straight pipeline is densely distributed mainly in the low frequency; Secondly, the natural frequencies of vibration in the horizontal plane are slightly higher than those of corresponding orders in the vertical plane, although the difference is little; In addition, by increasing the number of supports, pipeline span can be reduced and the natural frequencies of pipeline can be significantly increased, but this will make the vibration mode change irregularly.
Shield machine Fluid-solid coupling Modal experiment Natural frequency
Jing Hua Xie Ke Tian Li He Tian Ren Yang Xiang Heng Zhu
State Key Laboratory of High-performance Complex Manufacturing, Central South University,Changsha 410083, China
国际会议
上海
英文
286-293
2011-10-21（万方平台首次上网日期，不代表论文的发表时间）