Publication result detail

Towards the direct validation of computational lubrication modelling of hip replacements

LU, X.; NEČAS, D.; MENG, Q.; REBENDA, D.; VRBKA, M.; HARTL, M.; JIN, Z.

Original Title

Towards the direct validation of computational lubrication modelling of hip replacements

English Title

Towards the direct validation of computational lubrication modelling of hip replacements

Type

WoS Article

Original Abstract

This study attempted to provide insights into validating computational lubrication modelling of hip replacements. Direct comparisons between experimental measurements and numerical simulations were conducted for the central film thickness in a CoCr-on-glass hip bearing pair. A low-viscosity mineral oil and a 25% bovine serum were used as lubricants, respectively. Results indicated that for the low-viscosity lubricant case, the film thicknesses predicted by the computational model were comparable to the experimental measurements. For the bovine serum case, the computational results did not agree with those measured by experiments due to the viscosity model adopted in the computational models. A new effective viscosity equation was proposed to accurately predict the lubrication performance of hip replacements for protein-containing lubricants under transient conditions.

English abstract

This study attempted to provide insights into validating computational lubrication modelling of hip replacements. Direct comparisons between experimental measurements and numerical simulations were conducted for the central film thickness in a CoCr-on-glass hip bearing pair. A low-viscosity mineral oil and a 25% bovine serum were used as lubricants, respectively. Results indicated that for the low-viscosity lubricant case, the film thicknesses predicted by the computational model were comparable to the experimental measurements. For the bovine serum case, the computational results did not agree with those measured by experiments due to the viscosity model adopted in the computational models. A new effective viscosity equation was proposed to accurately predict the lubrication performance of hip replacements for protein-containing lubricants under transient conditions.

Keywords

Artificial hip joint; Lubrication; Computational modelling; Validation

Key words in English

Artificial hip joint; Lubrication; Computational modelling; Validation

Authors

LU, X.; NEČAS, D.; MENG, Q.; REBENDA, D.; VRBKA, M.; HARTL, M.; JIN, Z.

RIV year

2021

Released

01.06.2020

Publisher

Elsevier

Location

Nizozemsko

ISBN

0301-679X

Periodical

Tribology International

Volume

146

Number

6

State

United Kingdom of Great Britain and Northern Ireland

Pages from

106240

Pages to

106240

Pages count

10

URL

https://www.sciencedirect.com/science/article/pii/S0301679X20300839

BibTex

@article{BUT161972,
  author="LU, X. and NEČAS, D. and MENG, Q. and REBENDA, D. and VRBKA, M. and HARTL, M. and JIN, Z.",
  title="Towards the direct validation of computational lubrication modelling of hip replacements",
  journal="Tribology International",
  year="2020",
  volume="146",
  number="6",
  pages="106240--106240",
  doi="10.1016/j.triboint.2020.106240",
  issn="0301-679X",
  url="https://www.sciencedirect.com/science/article/pii/S0301679X20300839"
}