Optimization of Turbine Disk Profiles by Metamorphic Development

[+] Author and Article Information
Jing-Sheng Liu

Department of Engineering, University of Hull, Hull, HU6 7RX, UKe-mail: J.S.Liu@hull.ac.uk

Geoffrey T. Parks, P. John Clarkson

Department of Engineering, University of Cambridge, Cambridge, CB2 1PZ, UK

J. Mech. Des 124(2), 192-200 (May 16, 2002) (9 pages) doi:10.1115/1.1467079 History: Received January 01, 2001; Online May 16, 2002
Copyright © 2002 by ASME
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Schematic diagrams of the turbine disk geometries and loadings, boundary conditions and geometric restrictions: (a) disk geometry, mechanical loading, and displacement boundary conditions; (b) thermal boundary conditions and geometric restriction for optimization
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Structural dynamic growth factor versus hybrid constraint function
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Flow chart of the MD method
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The metamorphic development convergence history for the turbine disk design: (a) iteration 0 (initial); (b) iteration 5; (c) iteration 10; (d) iteration 15; (e) iteration 20; (f) iteration 25 (optimized)
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Contours of various stresses, temperature and heat flux distributions in the optimized turbine disk; (a) Mises stress; (b) radial stress; (c) axial stress; (d) hoop stress; (e) temperature; (f) heat flux
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Stress distributions on the non-design surface of the optimized disk structure
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Stress distributions on the design surface of the optimized disk structure
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Optimal shapes for different loading cases: (a) blades+centrifugal(20000 rpm)+thermal loading; (b) blades+centrifugal (20000 rpm) loading; (c) blades loading only; (d) blades+centrifugal(18000 rpm)+thermal loading; (e) blades+centrifugal(16000 rpm)+thermal loading; (f) blades+centrifugal(18000 rpm)+thermal+fit pressure loading
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Comparisons of the optimal shapes for different loading cases: (a) comparison of optimal shapes for different loadings; (b) comparison of optimal shapes for different rotational speeds; (c) comparison of optimal shapes with and without a fit pressure




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