TECHNICAL PAPERS: Gas Turbines: Structures and Dynamics

Contact Stresses in Dovetail Attachments: Finite Element Modeling

[+] Author and Article Information
G. B. Sinclair

Department of Mechanical Engineering, Louisiana State University, Baton Rouge, LA 70803-6413

N. G. Cormier

General Electric Aircraft Engines, Cinncinati, OH 45215

J. H. Griffin

Department of Mechanical Engineering, Carnegie Mellon University, Pittsburgh, PA 15213-3890

G. Meda

Science and Technology Division, Corning, Inc., Corning, NY 14831

J. Eng. Gas Turbines Power 124(1), 182-189 (Mar 01, 1999) (8 pages) doi:10.1115/1.1391429 History: Received October 01, 1998; Revised March 01, 1999
Copyright © 2002 by ASME
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Dovetail attachment configuration: (a) overall attachment, (b) close-up of contact region with local coordinates, (c) close-up of disk near lower contact point with stresses acting
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Examples of contact problems: (a) indentor profiles, (b) contact stresses
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Finite element grids: (a) coarse global grid, (b) close-up of coarse global grid with submodel region shown shaded, (c) coarse submodel grid
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Converge of contact stress (μ=0): (a) global distributions (from global grids), (b) local distributions (including submodel results)
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Convergence of other stress components (μ=0.4); (a) local shear stresses, (b) local hoop stresses
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Comparison of shear stress with limiting value (τc cf. μσc, μ=0.4): (a) global comparison (from fine global grid), (b) local comparison (from fine submodel grid)




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