A novel topology/shape optimization method, Metamorphic Development, is applied to an axisymmetric thermo-elasticity design problem. Based on solid modeling and finite element analysis, optimal profiles of minimum mass turbine disks are sought by growing and degenerating simple initial structures subject to both response and geometric constraints. Radial stress, axial stress, hoop stress and von Mises stress are analyzed throughout the optimization and a constraint is imposed on von Mises stress everywhere in the disk. The optimal structures are developed metamorphically in specified infinite design domains using both quadrilateral and triangular axisymmetric finite elements. Comparisons are made of the results obtained for different optimization scenarios: (a) with and without thermal loading; (b) with and without centrifugal body forces; (c) with and without a fit pressure on the inner surface of the hub; and (d) operating at different rotational speeds.
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June 2002
Technical Papers
Optimization of Turbine Disk Profiles by Metamorphic Development
Jing-Sheng Liu,
Jing-Sheng Liu
Department of Engineering, University of Hull, Hull, HU6 7RX, UK
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Geoffrey T. Parks,
e-mail: gtp@eng.cam.ac.uk
Geoffrey T. Parks
Department of Engineering, University of Cambridge, Cambridge, CB2 1PZ, UK
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P. John Clarkson
e-mail: pjc10@eng.cam.ac.uk
P. John Clarkson
Department of Engineering, University of Cambridge, Cambridge, CB2 1PZ, UK
Search for other works by this author on:
Jing-Sheng Liu
Department of Engineering, University of Hull, Hull, HU6 7RX, UK
Geoffrey T. Parks
Department of Engineering, University of Cambridge, Cambridge, CB2 1PZ, UK
e-mail: gtp@eng.cam.ac.uk
P. John Clarkson
Department of Engineering, University of Cambridge, Cambridge, CB2 1PZ, UK
e-mail: pjc10@eng.cam.ac.uk
Contributed by the Design Automation Committee for publication in the JOURNAL OF MECHANICAL DESIGN. Manuscript received January 2001. Associate Editor: G. M. Fadel.
J. Mech. Des. Jun 2002, 124(2): 192-200 (9 pages)
Published Online: May 16, 2002
Article history
Received:
January 1, 2001
Online:
May 16, 2002
Citation
Liu, J., Parks, G. T., and Clarkson, P. J. (May 16, 2002). "Optimization of Turbine Disk Profiles by Metamorphic Development ." ASME. J. Mech. Des. June 2002; 124(2): 192–200. https://doi.org/10.1115/1.1467079
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