Finite Element Analysis on the Blade Structure of Centrifugal Pump
The centrifugal pump is the common mechanical equipment, which is extensively applied in the water conservancy, ships and other projects, and the blade structure is a very important part in the centrifugal pump. In this paper, the stress distribution and concentration of single blade in the impeller are analyzed under the different pressure field of the blade structure surface, and the fatigue failure of blade is also studied. The research results show that the we can get the stress and strain of the blade accurately and intuitively through the analysis for the blade structure, the stress concentration of the centrifugal pump blade is mainly in the root and junction of the wheel cover, and the import value of stress concentration is larger than the outlet; the stress concentration may be caused easily as the stress increases rapidly in the blade, which has a great impact on the fatigue strength, the fatigue limit of the blade with the stress concentration is decreased more obviously than the fatigue limit of the smooth blade.
Zhengyi Jiang, Xianghua Liu and Jinglong Bu
L. Y. Wu and Y. L. Wang, "Finite Element Analysis on the Blade Structure of Centrifugal Pump", Advanced Materials Research, Vols. 154-155, pp. 1748-1751, 2011