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Mechanisms of dissipation in frictional joints: influence of sharp contact edges and plastic deformaiton
KTH, School of Engineering Sciences (SCI), Solid Mechanics (Dept.).
KTH, School of Engineering Sciences (SCI), Solid Mechanics (Dept.).ORCID iD: 0000-0001-8068-2360
2008 (English)In: Wear, ISSN 0043-1648, E-ISSN 1873-2577, Vol. 265, no 11-12, 1814-1819 p.Article in journal (Refereed) Published
Abstract [en]

In the present study frictional and plastic dissipation in joints are investigated by means of the finite element method. The Coulomb friction model is used in simulations and the results are compared to experimental measurements. Some of the contacts considered contain numerous internal sharp edges that are localized inside the overall contact region. For joints with sharp contact edges an elastic material model with Coulomb friction is inappropriate because of the sliding-over-edge that occurs in such joints. Here, the sliding-over-edge phenomenon is studied with an elastic-plastic material model in some detail. The phenomenon involves very high plastic strains locally, material build-up in front of the edge and large plastic dissipation. A summation technique for the total dissipation in joints is presented, where each local sliding-over-edge contribution is taken into account. The results are compared to experiments. It is shown that plastic deformation is an important contributing factor to the total dissipation in joints with highly non-conformal surfaces.

Place, publisher, year, edition, pages
2008. Vol. 265, no 11-12, 1814-1819 p.
Keyword [en]
Frictional joints, Elasto-plastic contact, Sliding-over-edge, Finite element
National Category
Mechanical Engineering
Identifiers
URN: urn:nbn:se:kth:diva-6960DOI: 10.1016/j.wear.2008.04.026ISI: 000261283300031Scopus ID: 2-s2.0-54149115082OAI: oai:DiVA.org:kth-6960DiVA: diva2:11818
Note
QC 20100917. Uppdaterad fraån manuskript till artikel (20100917).Available from: 2007-04-11 Created: 2007-04-11 Last updated: 2017-12-14Bibliographically approved
In thesis
1. Models and mechanisms of dissipation in bolted joints
Open this publication in new window or tab >>Models and mechanisms of dissipation in bolted joints
2007 (English)Licentiate thesis, comprehensive summary (Other scientific)
Place, publisher, year, edition, pages
Stockholm: KTH, 2007. 4 p.
Series
Trita-HFL. Report / Royal Institute of Technology, Solid Mechanics, ISSN 1654-1472 ; 0432
National Category
Mechanical Engineering
Identifiers
urn:nbn:se:kth:diva-4326 (URN)
Presentation
2007-03-30, Sal H1, KTH, Teknikringen 33, Stockholm, 10:15
Opponent
Supervisors
Note

QC 20101119

Available from: 2007-04-11 Created: 2007-04-11 Last updated: 2013-01-15Bibliographically approved
2. Modelling of frictional joints: from dissipative mechanisms to structural response
Open this publication in new window or tab >>Modelling of frictional joints: from dissipative mechanisms to structural response
2008 (English)Doctoral thesis, comprehensive summary (Other scientific)
Place, publisher, year, edition, pages
Stockholm: KTH, 2008. 18 p.
Series
Trita-HFL. Report / Royal Institute of Technology, Solid mechanics, ISSN 1654-1472 ; 0470
Keyword
Frictional joint, Bolted joint, Finite element method, Non-linear vibration, Non-local friction, Contact mechanics, Dynamics
National Category
Mechanical Engineering
Identifiers
urn:nbn:se:kth:diva-9625 (URN)
Public defence
2008-12-05, Sal K2, KTH, Teknikringen 28, Stockholm, 10:15 (English)
Opponent
Supervisors
Note

QC 20100917

Available from: 2008-11-21 Created: 2008-11-21 Last updated: 2013-01-14Bibliographically approved

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