Naslov
Lubricated Contact Model with Heat Transfer for Metal Rolling Processes

Autori
Škurić, Vanja ; De Jaeger, Peter ; Jasak, Hrvoje

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
4th ECCOMAS Young Investigators Conference and PhD Olympiad 2017 / Cremonesi, Massimiliano - Milano, 2017, 84-85

Skup
4th ECCOMAS Young Investigators Conference

Mjesto i datum
Milano, Italija, 13.09.2017. - 15.09.2017

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Lubricated Contact ; Finite Area Method ; Reynolds Lubrication Equation ; Heat Transfer ; OpenFOAM

Sažetak
Numerical method for calculating lubricated contact pressures, friction and thermal effects is presented in this study. Lubrication, friction and heat transfer are important factors in metal forming processes, since unoptimised manufacturing parameters can result in lower productivity of the rolling machinery and deteriorate surface quality of the product. In order to have a good representation of the lubricated contact phenomena, interaction between surface asperities and lubricant should be taken into account [1]. Due to changes of lubricant thickness during rolling process, continuous treatment of lubrication regimes (hydrodynamic, mixed and boundary) is required. Thermal contact model should include heat conduction between asperities in direct contact and heat transfer between asperities and the lubricant. Surface roughness effects, lubrication regimes treatment and lubricant properties variations are all implemented in the model [2]. Contact pressures and frictional forces are calculated by the modified Reynolds equation [3] using the Finite Area discretisation [4]. Heat transfer across the lubricated contact interface utilizes total thermal contact conductance [5] which takes into account conduction through direct solid contact of rough surfaces and conduction of the lubricant. Implemented model is used by the solid contact boundary condition for a large strain elasto-plastic deformation solver developed by Cardiff et al. [6] in OpenFOAM framework. Results of the numerical simulation using the implemented model are shown on a wire rolling case.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo

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