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Numerical investigation of Powder Metallurgy manufactured gear wheels subjected to fatigue loading

Cedergren, Joakim LU ; Melin, Solveig LU and Lidström, Per LU (2005) In Powder Technology 160(3). p.161-169
Abstract
A 2D numerical study of the damage accumulation at the root of a Powder Metallurgy (PM) manufactured gear wheel subjected to frequent overloads, i.e. low cycle fatigue loading, has been performed. The initial porosity distribution of the gear was obtained from a 3D simulation of double action compaction of the gear. The porosity distributions over the centre plane and at the surface were transferred into 2D, and the damage accumulation was followed using the Gurson material model. The initial damage within the gear is here interpreted as the porosity distribution resulting from the manufacturing compaction process. It was found that an accurate description of initial damage distribution only has a small narrow influence on the resulting... (More)
A 2D numerical study of the damage accumulation at the root of a Powder Metallurgy (PM) manufactured gear wheel subjected to frequent overloads, i.e. low cycle fatigue loading, has been performed. The initial porosity distribution of the gear was obtained from a 3D simulation of double action compaction of the gear. The porosity distributions over the centre plane and at the surface were transferred into 2D, and the damage accumulation was followed using the Gurson material model. The initial damage within the gear is here interpreted as the porosity distribution resulting from the manufacturing compaction process. It was found that an accurate description of initial damage distribution only has a small narrow influence on the resulting damage. The damage accumulation is a highly local phenomenon, and that the damage development is highly dependent on the local initial damage at the gear root. Based on this, a simple life estimate model, relating the number of cycles to accumulate a pre-described amount of damage to applied load and initial damage, is also presented. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
finite elements, porous material, Gurson model, gear, dynamics, damage
in
Powder Technology
volume
160
issue
3
pages
161 - 169
publisher
Elsevier
external identifiers
  • wos:000233478100002
  • scopus:27744568214
ISSN
0032-5910
DOI
10.1016/j.powtec.2005.08.023
language
English
LU publication?
yes
id
660f86fe-7b4b-4431-bcbb-a11a3bd82b03 (old id 211345)
date added to LUP
2007-08-20 11:15:35
date last changed
2017-01-01 06:56:20
@article{660f86fe-7b4b-4431-bcbb-a11a3bd82b03,
  abstract     = {A 2D numerical study of the damage accumulation at the root of a Powder Metallurgy (PM) manufactured gear wheel subjected to frequent overloads, i.e. low cycle fatigue loading, has been performed. The initial porosity distribution of the gear was obtained from a 3D simulation of double action compaction of the gear. The porosity distributions over the centre plane and at the surface were transferred into 2D, and the damage accumulation was followed using the Gurson material model. The initial damage within the gear is here interpreted as the porosity distribution resulting from the manufacturing compaction process. It was found that an accurate description of initial damage distribution only has a small narrow influence on the resulting damage. The damage accumulation is a highly local phenomenon, and that the damage development is highly dependent on the local initial damage at the gear root. Based on this, a simple life estimate model, relating the number of cycles to accumulate a pre-described amount of damage to applied load and initial damage, is also presented.},
  author       = {Cedergren, Joakim and Melin, Solveig and Lidström, Per},
  issn         = {0032-5910},
  keyword      = {finite elements,porous material,Gurson model,gear,dynamics,damage},
  language     = {eng},
  number       = {3},
  pages        = {161--169},
  publisher    = {Elsevier},
  series       = {Powder Technology},
  title        = {Numerical investigation of Powder Metallurgy manufactured gear wheels subjected to fatigue loading},
  url          = {http://dx.doi.org/10.1016/j.powtec.2005.08.023},
  volume       = {160},
  year         = {2005},
}