Abstract
This paper reports on work in developing a finite element (FE) based die shape optimisation for net-shape forging of 3D aerofoil blades for aeroengine applications. Quantitative representations of aerofoil forging tolerances were established to provide a correlation between conventional dimensional and shape specifications in forging production and those quantified in FE simulation. A new direct compensation method was proposed, employing variable weighting factors to minimise the total forging tolerances in forging optimisation computations. A surface approximation using a B-spline surface was also developed to ensure improved die surface quality for die shape representation and design. For a Ni-alloy blade test case, substantial reduction in dimensional and shape tolerances was achieved using the developed die shape optimisation system.
Original language | English |
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Pages (from-to) | 2490-2500 |
Number of pages | 11 |
Journal | Materials & Design |
Volume | 30 |
Issue number | 7 |
DOIs | |
Publication status | Published - Aug 2009 |
ASJC Scopus subject areas
- Mechanical Engineering
- Mechanics of Materials
- General Materials Science