Analysis Of Sound Radiation For Water Pump Unit

First the thesis has assumed a summary to prevenient achievement about studying direction in vibration and noise control. The second it is clear of the focus of the work and the need to address the main issues in this paper. Then The finite element method used in this paper and the finite element software was introduced.The main body of a book is used for t pump units studying and noise prediction of a preliminary study .Then their point about noise control and optimize the views was put forward. Derived vibration of the sound radiation boundary integral equation formula And radiation boundary integral equation in terms of not only the issue was studied. Then it pointed that CHIEF method is integral equations to solve problems ,which is effective and reliable way.First, it get the calculation of the structure and external fluid medium coupled vibration by the using of finite element software ANSYS for the coupled vibration about notes of displacement response. Second, the establishment of the finite element model and the results of the import SYSNOISE for radiation field analysis after the displacement response data into a data speed of response. It will get the calculation of radiation field at the midfield and sound pressure level of sound pressure.This paper analyses in the calculation of the pump unit exciting force under the structure of vibration and sound radiation, and the results were analyzed and calculated the submarine structure of the radiation efficiency.In this paper, water pumps vibration characteristics of radiation is of great significance. This paper presents the conclusions of the pump unit optimal design has a guiding significance.