Author(s)

Kaushik V. Prasad, Karthik Nagendra, Hiriyannaiah Adarsha, Abhijeeth Nagaraj, Venkatachar Ravinarayan, Venkatesh Sandeep, Madihalli Kenchappa Ranganatha Swamy

Department of Mechanical engineering, SET-Jain University, Ramanagara, India.

Gasturbines are provided with cut-outs for minimizing vibrations. Round cut-outs are usually favored but there are various designs which offer more advantages over the circular shape. The objective of this work was to compare stress reduction during the induced vibration in the hollow gas turbine shafts by introducing different cut-outs. Round, square and elliptical cut-outs under different orientations were compared. It is observed that a square cutout at 45° orientation has the least stress concentration. This is due to the effective orientation of plastic strains along the principal axis.

Static Analysis, Crack Propagation, Non Linear Analysis, Stress Concentration, Square Cutouts

Prasad, K. , Nagendra, K. , Adarsha, H. , Nagaraj, A. , Ravinarayan, V. , Sandeep, V. and Ranganatha Swamy, M. (2018) Analysis on the Effects of Cut-Outs in Hollow Inconel 718 Gas Turbine Shafts. Open Journal of Applied Sciences, 8, 304-313. doi: 10.4236/ojapps.2018.87023.