流体机械2017，Vol.45Issue(6)：21-25,5.DOI:10.3969/j.issn.1005-0329.2017.06.005
基于LMS Virtual.Lab的多级离心泵数值模态分析
Numerical Modal Analysis of Multistage Centrifugal Pump Based on LMS Virtual.Lab Software
摘要
Abstract
A multistage centrifugal pump was chosen, LMS Virtual.Lab software was adopted to perform numerical modal analysis, the natural frequencies and modes of vibration of the impeller and the shell of the multistage centrifugal pump were extracted based on the block Lanczos method. Result shows that the resonance phenomenon can be avoided effectivelybecause of the impeller structure. The natural frequency of the first modal is close to that of the vibration frequency, the natural frequencies of the fourth modal and the seventh modal are close to the frequencies of the second and third harmonic respectively, this may lead to resonancephenomenon. The main vibration mode of the casing of the multistage centrifugal pump is bending deformation. There is large deformations in the import, export and outlet end cap, so it should be considered to enhance the stiffness of these parts in the design to optimize its vibration characteristics.关键词
多级离心泵/固有频率/振型/模态分析Key words
multistage centrifugal pump/natural frequency/mode of vibration/modal analysis分类
机械制造引用本文复制引用
周岭,侯云鹤,王伟,杨阳..基于LMS Virtual.Lab的多级离心泵数值模态分析[J].流体机械,2017,45(6):21-25,5.基金项目
江苏省自然科学基金青年基金项目(BK20150508) （BK20150508）
江苏省高校自然科学研究面上项目(15KJB570001) （15KJB570001）
江苏省博士后科研资助计划项目(1501069A) （1501069A）
中国博士后科学基金项目(2015M581737) （2015M581737）
江苏大学高级人才启动基金项目(15JDG047) （15JDG047）
