Finite Element Analysis Of Axial Fan Impeller

At present, axial flow fan is used very widely in many areas of production in the industrial fan type. It has the advantages of simple structure, high work efficiency, reliable operation, low noise, low fabrication cost etc. Its important component is impeller. From the whole turbine performance in terms of its security and stability under normal working state, which is mainly determined by the impeller operation. Therefore, in the process of axial flow fan design, impeller structure is verified through the strength calculation method, which can greatly improve the safety of the whole machine working reliability, and has the practical significance of the operation.In the process of axial flow fan design, finite element technique is used by more and more researchers and designers, which is used to complete the impeller strength calculation and analysis, and to ensure safety and reliability of the design of fan. It all depends on the greatly improved computer technology and numerical algorithm, and provides the guarantee for improving the new fan performance. In this article, using the finite element technology to explore a path, through the study of the strength calculation of impeller analysis, to optimize design methods and goals to reduce manufacturing costs. In the axial flow fan design process, based on the theory of the similarity theory, the static strength analysis is completed by traditional method and the finite element method (FEM). In the process of impeller design, maximum stress value over the selected material yield strength problem, through the strength of the structure optimization and the static and dynamic analysis to solve them. Final analysis results: QSTE420T, select material yield strength 420 MPa, impeller optimized maximum stress 178.0 MPa, is far less than the material yield strength (safety coefficient 2.36) high safety. In order to ensure the fan operation security, through the modal analysis method, natural frequency and the corresponding calculated impeller rotating speed, and compared with its work speed, it does not produce resonance in the impeller.In this paper, the axial flow fan impeller design conforms to the requirements, the three-dimensional modeling, strength analysis and structure optimization design work, such as using the SolidWorks software and COSMOSWorks plug-ins. The discussions of this article has the practical significance of improvement of the axial flow fan impeller design ability, and of the safety and reliability of the shaft wind flow operation.