Naslov
FEM simulation of plastic flow with boundary friction and strain history

Autori
Vučina, Damir

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Numerical Methods in Industrial Forming Processes, NUMIFORM / Chenot, Wood, Zienkiewicz - Sophia Antipolis, France : Balkema Rotterdam, 1992, 681-686

Skup
Numerical Methods in Industrial Forming Processes, NUMIFORM

Mjesto i datum
Nica, Francuska, 14.09.1992. - 18.09.1992

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
FEM Simulation; Plastic Flow

Sažetak
In this paper the flow formulation viscoplastic finite element analysis is aplied to metal forming problems where the material constitutive equations are functions of both strain rate and strain history. The analysis is carried out in physical coordinates under assumptions of small displacements and deformation theory and stationary conditions. The numerical procedures developed include determination of the particular trajectory that the strain rate is integrated along for each numerical integration base point. It is assumed that for stationary processes the history of state variables of some point corresponds to their current values at some other point on the trajectory of the point considered. Boundary friction is taken into account by developing interface elements that directly generate the frictional traction at particular boundary nodes or impose Coulomb friction conditions as constraints using the penalty approach. Corresponding 2D finite element procedures have been developed and applied to idealized cold plane strain extrusion and other processes.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo, Temeljne tehničke znanosti

POVEZANOST RADA