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Influence from contact pressure distribution on energy dissipation in bolted joints
Scania CV AB.
KTH, School of Engineering Sciences (SCI), Solid Mechanics (Dept.).ORCID iD: 0000-0001-8068-2360
2006 (English)In: Welding & Joining & Fastening & Friction Stir Welding, SAE International , 2006Chapter in book (Other academic)
Abstract [en]

Energy dissipation due to micro-slip in joints is the primary source of damping in many vehicle and space structures. This paper presents results on how the surface topology may be modified to increase the energy dissipation in joints. An analytical solution for general forms of contact pressure of a one-dimensional micro-slip problem is presented. The solution indicates how the contact pressure should be distributed to maximize the energy dissipation. Two dimensional contact pressures are optimized using finite element methods in combination with numerical optimization methods and the results are used to modify the surface topology in bolted joints in order to increase the energy dissipation during loading. The predicted increase of energy dissipation is validated with physical testing. A direct result of the study is a washer with varying thickness increasing the energy dissipation in joints and hence the structural damping of joined structures.

Place, publisher, year, edition, pages
SAE International , 2006.
National Category
Mechanical Engineering
Identifiers
URN: urn:nbn:se:kth:diva-6958DOI: 10.4271/2006-01-0778Scopus ID: 2-s2.0-84877422035ISBN: 978-0-7680-1769-4 (print)OAI: oai:DiVA.org:kth-6958DiVA: diva2:11816
Note
QC 20100917Available from: 2007-04-11 Created: 2007-04-11 Last updated: 2010-09-17Bibliographically 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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CiteExportLink to record
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Citation style
  • apa
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More styles
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  • Other locale
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