Finite element analysis of the mechanics of blade/disk contacts

Matthew C. Gean, Thomas N. Farris

Research output: Contribution to journalConference article

10 Scopus citations

Abstract

A predictive procedure in which the contact loads on a dovetail surface can be calculated using engine performance parameters, such as speed and temperature as an input The Finite Element Method (FEM) can be used to calculate the contact loads on a dovetail surface for an entire mission, however these calculations are time consuming. The predictive procedure described herein only require a small number of predetermined calibrating FEM analyses to obtain empirical constants, for a specific to a given dovetail geometry. The resulting prediction procedure enables calculation of contact loads for an entire mission history in near real-time. These global contact loads can be combined with an efficient solution to Singular Integral Equations (SIE) to calculate the contact tractions, and ultimately the contact stresses. The resulting contact stresses have been used to successfully predict fretting fatigue lives under controlled laboratory conditions.

Original languageEnglish (US)
Pages (from-to)1307-1314
Number of pages8
JournalCollection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
Volume2
Publication statusPublished - Dec 19 2005
Externally publishedYes
Event46th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference - Austin, TX, United States
Duration: Apr 18 2005Apr 21 2005

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All Science Journal Classification (ASJC) codes

  • Architecture
  • Materials Science(all)
  • Aerospace Engineering
  • Mechanics of Materials
  • Mechanical Engineering

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