Abstract：In order to obtain the vibration performance of metallurgical hot water circulating pump in actual working state, the rotatable and stationary parts were modeled by Pro/E software． The modal without prestress was calculated by ANSYS Workbench to analyze the effect of material property on the modal of two parts．Based on the pump performance test, the modals with pre stress under high temperature at high pressure and normal temperature at normal pressure were computed by fluidstructure interaction（FSI） method. The all ordered natural frequencies and amplitudes of rotatable and stationary parts were compared under different conditions．Not only the stiffness of rotor system was checked from critical speed, but also the first six ordered vibrational modes of rotatable and stationary parts were provided．The results show that part structure and material property are the major determining factor for each ordered natural frequency, while the prestress has slight influence on natural frequency. The amplitudes of rotatable and stationary parts have no change under different conditions. The part structure is the major deciding factor for each ordered natural frequencies. The rotor of the hot water circulating pump is a stable rigidity system．
刘厚林, 白羽, 董亮, 刘明明, 肖佳伟. 高温高压冶金用热水循环泵模态分析[J]. 江苏大学学报（自然科学版）, 2015, 36(2): 159-164.
LIU Hou-Lin, BAI Yu, DONG Liang, LIU Ming-Ming, XIAO Jia-Wei. Modal analysis of metallurgical hot water circulating
pump at high temperature and pressure[J]. Journal of Jiangsu University(Natural Science Eidtion)
, 2015, 36(2): 159-164.
2015, Vol. 36 
