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Computational homogenisation for thermoviscoplasticity : application to thermally sprayed coatings

Berthelsen, Rolf; Denzer, Ralf LU ; Oppermann, Philip LU and Menzel, Andreas LU (2017) In Computational Mechanics
Abstract

Metal forming processes require wear-resistant tool surfaces in order to ensure a long life cycle of the expensive tools together with a constant high quality of the produced components. Thermal spraying is a relatively widely applied coating technique for the deposit of wear protection coatings. During these coating processes, heterogeneous coatings are deployed at high temperatures followed by quenching where residual stresses occur which strongly influence the performance of the coated tools. The objective of this article is to discuss and apply a thermo-mechanically coupled simulation framework which captures the heterogeneity of the deposited coating material. Therefore, a two-scale finite element framework for the solution of... (More)

Metal forming processes require wear-resistant tool surfaces in order to ensure a long life cycle of the expensive tools together with a constant high quality of the produced components. Thermal spraying is a relatively widely applied coating technique for the deposit of wear protection coatings. During these coating processes, heterogeneous coatings are deployed at high temperatures followed by quenching where residual stresses occur which strongly influence the performance of the coated tools. The objective of this article is to discuss and apply a thermo-mechanically coupled simulation framework which captures the heterogeneity of the deposited coating material. Therefore, a two-scale finite element framework for the solution of nonlinear thermo-mechanically coupled problems is elaborated and applied to the simulation of thermoviscoplastic material behaviour including nonlinear thermal softening in a geometrically linearised setting. The finite element framework and material model is demonstrated by means of numerical examples.

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author
organization
publishing date
type
Contribution to journal
publication status
epub
subject
keywords
Finite element method, Homogenisation, Multiscale modelling, Thermomechanics, Thermoviscoplasticity
in
Computational Mechanics
pages
28 pages
publisher
Springer
external identifiers
  • scopus:85021897207
ISSN
0178-7675
DOI
10.1007/s00466-017-1436-x
language
English
LU publication?
yes
id
e7121f09-1572-4119-908c-433377f37162
date added to LUP
2017-07-24 10:21:40
date last changed
2017-07-24 10:21:40
@article{e7121f09-1572-4119-908c-433377f37162,
  abstract     = {<p>Metal forming processes require wear-resistant tool surfaces in order to ensure a long life cycle of the expensive tools together with a constant high quality of the produced components. Thermal spraying is a relatively widely applied coating technique for the deposit of wear protection coatings. During these coating processes, heterogeneous coatings are deployed at high temperatures followed by quenching where residual stresses occur which strongly influence the performance of the coated tools. The objective of this article is to discuss and apply a thermo-mechanically coupled simulation framework which captures the heterogeneity of the deposited coating material. Therefore, a two-scale finite element framework for the solution of nonlinear thermo-mechanically coupled problems is elaborated and applied to the simulation of thermoviscoplastic material behaviour including nonlinear thermal softening in a geometrically linearised setting. The finite element framework and material model is demonstrated by means of numerical examples.</p>},
  author       = {Berthelsen, Rolf and Denzer, Ralf and Oppermann, Philip and Menzel, Andreas},
  issn         = {0178-7675},
  keyword      = {Finite element method,Homogenisation,Multiscale modelling,Thermomechanics,Thermoviscoplasticity},
  language     = {eng},
  month        = {07},
  pages        = {28},
  publisher    = {Springer},
  series       = {Computational Mechanics},
  title        = {Computational homogenisation for thermoviscoplasticity : application to thermally sprayed coatings},
  url          = {http://dx.doi.org/10.1007/s00466-017-1436-x},
  year         = {2017},
}