DESIGN & ANALYSIS OF SOLID & HOLLOW IMPELLERS FOR AERO ENGINE APPLICATION

This paper represents Design & Analysis Of Solid & Hollow Impellers For Aero Engine Application In the present work, an analysis is carried out to check the solid and hallow impellers for their performance under rotational, interference and blade connection. Initially Profile representation of impeller segment and imported to ANSYS in SAT file format. The solid elements are used for meshing the object. The shaft hub interference region is constrained and applied the structure. The results are captured for radial, hoop and von mises stresses. Then a cylindrical cutout is made near the small end of impeller and stress analysis is carried out. Again a cylindrical cutout is made near the big end of impeller and stress analysis is carried out to check the performance of the impellers. This can be attributed to the nearness of cutout region near the big end where more mass is concentrated. Also modal Analysis can be used to analyze the behavior. Further analysis is carried out with interference of 25 microns at the inner region of impeller segment. This interference automatically reduces the stresses generated in the structure due to induced compressive stresses on the outer region.