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A model of damage coupled to wear
Department of Mechanical Engineering, Linköping University, Linköping, Sweden.
Department of Mechanical Engineering, Linköping University, Linköping, Sweden.
Department of Mechanical Engineering, Linköping University, Linköping, Sweden.ORCID-id: 0000-0001-6821-5727
2003 (Engelska)Ingår i: International Journal of Solids and Structures, ISSN 0020-7683, E-ISSN 1879-2146, Vol. 40, nr 12, s. 2957-2974Artikel i tidskrift (Refereegranskat) Published
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Abstract [en]

The present paper presents a model of damage coupled to wear. The damage model is based on a continuum model including the gradient of the damage variable. Such a model is non-local in the sense that the evolution of damage is governed by a boundary-value problem instead of a local evolution law. Thereby, the well-known mesh-dependency observed for local damage models is removed. Another feature is that the boundary conditions can be used to introduce couplings between bulk damage and processes at the boundary. In this work such a coupling is suggested between bulk damage and wear at the contact interface. The model is regarded as a first attempt to formulate a continuum damage model for studying crack initiation in fretting fatigue.

The model is given within a thermodynamic framework, where it is assured that the principles of thermodynamics are satisfied. Furthermore, two variational formulations of the full. initial boundary value problem, serving as starting points for finite element discretization, are presented. Finally, preliminary numerical results for a simple one-dimensional example are presented and discussed. It is qualitatively shown how the evolution of damage may influence the wear behaviour and how damage may be initiated by the wear process.

Ort, förlag, år, upplaga, sidor
Elsevier, 2003. Vol. 40, nr 12, s. 2957-2974
Nyckelord [en]
continuum thermodynamics; internal variables; damage; gradient of damage; contact; friction; wear; fretting
Nationell ämneskategori
Maskinteknik Teknisk mekanik
Forskningsämne
Maskinteknik
Identifikatorer
URN: urn:nbn:se:oru:diva-48264DOI: 10.1016/S0020-7683(03)00121-5ISI: 000183216400003Scopus ID: 2-s2.0-0038814173OAI: oai:DiVA.org:oru-48264DiVA, id: diva2:904368
Tillgänglig från: 2007-12-19 Skapad: 2016-02-15 Senast uppdaterad: 2017-11-30Bibliografiskt granskad

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