Applying multiobjective cost and weight optimization to the initial design of turbine disks


Rao, A.R. and Scanlan, J.P. (2007) Applying multiobjective cost and weight optimization to the initial design of turbine disks Journal of Mechanical Design, 129, (12), pp. 1303-1310. (doi:10.1115/1.2779899).

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Description/Abstract

Aerospace design optimization typically explores the effects of structural performance and aerodynamics on the geometry of a component. This paper presents a methodology to incorporate manufacturing cost and fatigue life models within an integrated system to simultaneously trade off the conflicting objectives of minimum weight and manufacturing cost while satisfying constraints placed by structural performance and fatigue. A case study involving hte design of a high pressure turbine disk from an aircraft engine is presented. Manufacturing cost and fatigue life models are developed in DECISIONPRO, a generic modeling tool, wheras finite element anaylsis is carried out in the Rolls-Royce PLC proprietary solver SC03. A multiobjective optimization apprach based on the nondominated sorting genetic algorithm (NSGA) is used to evaluate the Pareto front for minimum cost and volume designs. A sequential workflow of the different models embedded within a scripting environment developed in MATLAB is used for automating the entire process.

Item Type: Article
Digital Object Identifier (DOI): doi:10.1115/1.2779899
ISSNs: 1050-0472 (print)
Subjects:

ePrint ID: 50026
Date :
Date Event
December 2007Published
Date Deposited: 11 Jan 2008
Last Modified: 16 Apr 2017 18:14
Further Information:Google Scholar
URI: http://eprints.soton.ac.uk/id/eprint/50026

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