Friction in a coated surface deformed by a sliding sphere

Helena Ronkainen (Corresponding Author), Anssi Laukkanen, Kenneth Holmberg

Research output: Contribution to journalArticleScientificpeer-review

29 Citations (Scopus)

Abstract

Stress and strain modelling and stress field computer simulations are today an important tool for systematic approach and optimisation of tribologically stressed coated contacts. Modelling illustrates and quantifies the dominating parameters resulting in crack initiation, crack growth and failure of coated surfaces. Friction and its components, adhesive and ploughing friction, are necessary input parameters in stress modelling. In Finite Element Method (FEM) modelling the ploughing component is integrated in the model while the adhesive component needs to be determined as input value for stress simulations. This paper presents how adhesive friction is determined for the TiN (µa = 0.066) and DLC (µa = 0.047) coatings from experimental friction measurements. The experimental value is used as an input value in the three dimensional finite element micro-model that simulates the spherical tip sliding on a DLC coated flat substrate with increasing load similar to the conventional scratch test contact. Based on the numerical contact analysis (FEM) similar friction evolution compared to the experimental friction in scratch testing was depicted. However, the analytical approach resulted in a diverse solution.
Original languageEnglish
Pages (from-to)1315-1323
JournalWear
Volume263
Issue number7 - 12
DOIs
Publication statusPublished - 2007
MoE publication typeA1 Journal article-refereed

Fingerprint

sliding
friction
Friction
adhesives
plowing
Adhesives
finite element method
friction measurement
crack initiation
Finite element method
stress distribution
Crack initiation
cracks
computerized simulation
Crack propagation
coatings
optimization
Coatings
Computer simulation
Testing

Keywords

  • Friction
  • Adhesive
  • Ploughing
  • DLC
  • TiN
  • FEM modelling
  • ProperTune

Cite this

Ronkainen, Helena ; Laukkanen, Anssi ; Holmberg, Kenneth. / Friction in a coated surface deformed by a sliding sphere. In: Wear. 2007 ; Vol. 263, No. 7 - 12. pp. 1315-1323.
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Friction in a coated surface deformed by a sliding sphere. / Ronkainen, Helena (Corresponding Author); Laukkanen, Anssi; Holmberg, Kenneth.

In: Wear, Vol. 263, No. 7 - 12, 2007, p. 1315-1323.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Friction in a coated surface deformed by a sliding sphere

AU - Ronkainen, Helena

AU - Laukkanen, Anssi

AU - Holmberg, Kenneth

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N2 - Stress and strain modelling and stress field computer simulations are today an important tool for systematic approach and optimisation of tribologically stressed coated contacts. Modelling illustrates and quantifies the dominating parameters resulting in crack initiation, crack growth and failure of coated surfaces. Friction and its components, adhesive and ploughing friction, are necessary input parameters in stress modelling. In Finite Element Method (FEM) modelling the ploughing component is integrated in the model while the adhesive component needs to be determined as input value for stress simulations. This paper presents how adhesive friction is determined for the TiN (µa = 0.066) and DLC (µa = 0.047) coatings from experimental friction measurements. The experimental value is used as an input value in the three dimensional finite element micro-model that simulates the spherical tip sliding on a DLC coated flat substrate with increasing load similar to the conventional scratch test contact. Based on the numerical contact analysis (FEM) similar friction evolution compared to the experimental friction in scratch testing was depicted. However, the analytical approach resulted in a diverse solution.

AB - Stress and strain modelling and stress field computer simulations are today an important tool for systematic approach and optimisation of tribologically stressed coated contacts. Modelling illustrates and quantifies the dominating parameters resulting in crack initiation, crack growth and failure of coated surfaces. Friction and its components, adhesive and ploughing friction, are necessary input parameters in stress modelling. In Finite Element Method (FEM) modelling the ploughing component is integrated in the model while the adhesive component needs to be determined as input value for stress simulations. This paper presents how adhesive friction is determined for the TiN (µa = 0.066) and DLC (µa = 0.047) coatings from experimental friction measurements. The experimental value is used as an input value in the three dimensional finite element micro-model that simulates the spherical tip sliding on a DLC coated flat substrate with increasing load similar to the conventional scratch test contact. Based on the numerical contact analysis (FEM) similar friction evolution compared to the experimental friction in scratch testing was depicted. However, the analytical approach resulted in a diverse solution.

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KW - Adhesive

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KW - TiN

KW - FEM modelling

KW - ProperTune

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