Publications in Scientific Journals:
S. Leroch, M. Varga, S. Eder, A. Vernes, M. Rodriguez Ripoll, G. Ganzenmüller:
"Smooth particle hydrodynamics simulation of damage induced by a spherical indenter scratching a viscoplastic material";
International Journal of Solids and Structures,
81
(2016),
188
- 202.
English abstract:
Wepresentanimplementationofa(mesh-free)smoothparticlehydrodynamics(SPH)algorithm,intendedfortheapplicationtosolidbodies,anduseittosimulatescratch-inducedsurfacedamageonanelasto-viscoplasticmaterial.IfconventionalSPHisusedtosimulatesolids,anunphysicallyhighartificialviscosityisrequiredtodampstrongoscillatorymodesandthusstabilizethesystem.Toovercometheseintrinsicdifficul-tiesassociatedwithmodelingsolidbodies,therecentlyimplementedso-calledtotal-LagrangianSPHutilizesanhourglasscontrolschemesimilartowhatisknownfromfiniteelementalgorithms.Elasto-viscoplasticmaterialpropertiesaremodeledbyusingtheMie-GrüneisenequationofstateandtheJohnson-Cookmodel.Thematerialparametersareselectedtoreproducethestrain-stressbehaviorofannealedoxygen-freehighconductivitycopper.Thesphericalindenterismodeledasarigidsphere.Thetopographiesofthecalculatedscratch-inducedsurfacedamageareinexcellentagreementwithexperimentalscratchtestscarriedoutatcomparablenormalloads.Wealsocalculatetherealcontactareabetweentheindenterandthesurface,al-lowingasoundestimationofthescratchhardness.
Keywords:
TribologyScratchtestSmoothparticlehydrodynamicsMulti-scalemodelingLAMMPS
Created from the Publication Database of the Vienna University of Technology.