Back to Search Start Over

Analysis of Fir Tree Root of Aero-engine Disc Assembly for Simultaneous Optimization of Fretting Characteristics

Analysis of Fir Tree Root of Aero-engine Disc Assembly for Simultaneous Optimization of Fretting Characteristics

Authors :
Ashishkumar Panchal
A. Bharatish
P. V. Srihari
H. N. Narasimhamurthy
Source :
Journal of The Institution of Engineers (India): Series C. 100:859-868
Publication Year :
2018
Publisher :
Springer Science and Business Media LLC, 2018.

Abstract

An aero-engine fir tree blade disc assembly is much proven to fretting fatigue damages due to centrifugal and vibrating conditions. This paper examines the effect of disc speed, contact angle and co-efficient of friction on fretting responses such as equivalent von-Mises stress, maximum shear stress and contact pressure by adopting Taguchi based grey relational analysis and RSM. All of the fretting responses were influenced by disc speed and contact angle. Multi response optimization achieved using grey relational analysis indicated that minimum equivalent von-Mises stress (0.63 MPa), shear stress (0.36 MPa) and contact pressure (0.681 MPa) are achieved at 260 rpm of disc speed, 17.5° of contact angle and 0.3 co-efficient of friction. Significant improvement was noticed in terms of stress concentration reduction at optimal conditions. Confirmatory simulation runs were performed to ensure the grey relational analysis results.

Details

ISSN :
22500553 and 22500545
Volume :
100
Database :
OpenAIRE
Journal :
Journal of The Institution of Engineers (India): Series C
Accession number :
edsair.doi...........cf50faeb1a1e28ebb406dfa0d3977cd7
Full Text :
https://doi.org/10.1007/s40032-018-0480-4