Finite element analysis of fir-tree region in turbine discs.
type: Item
instance of: scholarly article
title: Finite element analysis of fir-tree region in turbine discs.
zbMATH Open document ID: 1103.74360
DOI: 10.1016/S0168-874X(99)00072-4
author: N. Delaunay
published in: Finite Elements in Analysis and Design
publication date: 2000-08-21T00:00:00Z
review text: Comprehensive 2D and 3D finite element analysis is undertaken of the fir-tree region in aeroengine turbine disc assemblies. The study examines the effect of the critical geometrical features, such as the number of teeth, flank length and flank angle upon the stress field in the disc. The two-dimensional finite element predictions are verified using photoelastic-stress-freezing technique. The study is further extended to account for the effect of the skew angle and the interfacial friction between the disc and attached blades upon the resulting contact stresses at the interface and through the disc thickness. The results reveal that aeroengine disc designers must treat the two-dimensional finite element results with caution. This is due to the fact that two-dimensional results do not account for the large stress variations at the contact region and through the thickness due to the presence of skew slots in the disc.
Mathematics Subject Classification ID: 74S05
Mathematics Subject Classification ID: 76M10
zbMATH DE Number: 1493323
zbMATH Keywords: Three-dimensional
zbMATH Keywords: aeroengine
zbMATH Keywords: Turbine
zbMATH Keywords: Contact
zbMATH Keywords: Nonlinear
MaRDI profile type: Publication
full work available at URL: s0168-874x(99)00072-4
OpenAlex ID: W2053401707
description: scientific article; zbMATH DE number 1493323