Analysis on the Effects of Cut-Outs in Hollow Inconel 718 Gas Turbine Shafts

• 作者: Abhijeeth Nagaraj Hiriyannaiah Adarsha Karthik Nagendra Kaushik V. Prasad Madihalli Kenchappa Ranganatha Swamy Venkatachar Ravinarayan Venkatesh Sandeep
• 来源期刊: 应用科学(英文)
• 学科: 医学
• 关键词: Static ANALYSIS CRACK Propagation Non Linear ANALYSIS Stress Concentration SQUARE Cutouts
• 年，卷（期）: 2018,（7）
• 页码范围: 304-313
• 页数: 10页
• 分类号: R73

摘要

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.