Vibration analysis of fluid- structure interaction in water hammer based on transfer matrix method

作     者：GAO Hui TANG Xuelin 

作者机构：College of Water Resources & Civil EngineeringChina Agricultural University 

出 版 物：《排灌机械工程学报》 (Journal of Drainage and Irrigation Machinery Engineering)

年 卷 期：2016年第34卷第6期

页      面：518-524页

学科分类：082802[工学-农业水土工程] 08[工学] 0828[工学-农业工程] 09[农学] 0815[工学-水利工程] 0903[农学-农业资源与环境] 

基　　金：国家自然科学基金 国家教育部新世纪优秀人才支持计划 the Chinese Universities Scien tific Fund 

主　　题：water hammer fluid-structure interaction transfer matrix method vibration analysis 

摘      要：In consideration of the problem that the effect of conduit structure on water hammer has been ignored in the classical theory,the Poisson coupling between the fluid and the pipeline was studied and a fourteen-equation mathematical model of fluid-structure interaction(FSI)was ***,the transfer matrix method(TMM)was used to calculate the modal frequency,modal shape and frequency *** results were compared with that in experiment to verify the correctness of the TMM and the results show that the fluid-structure coupling has a greater impact on the modal frequencies than the modal ***,the influence on the response spectrum of different damping ratios was studied and the results show that the natural frequency under different damping ratios has changed little but there is a big difference for the pressure *** the decreasing of damping ratio,the damping of the system on frequency spectrum is more and more significant and the dispersion and dissipation is more and more *** the appropriate damping ratio should be selected to minimize the effects of the vibration of the *** results provide references for the theory research of FSI in the transient process.