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  • Numerical modelling of thermomechanical processes related to bulk forming operations
    Schönauer, M. ; Rodič, Tomaž ; Owen, D.R.J.
    ǂA ǂthermomechanically sound, decoupled model, numerically unified for cold and hot bulk metal forming is cast into a finite element formulation. The mechanical module is based on ... elasto(visco)plastic material constitutive laws and general interface frictional contact conditions with the assumption of rigid tools. Introduction of a logarithmic strain based finite strain model in the contex of a geometrically nonlinear assumed strain method characterizes the numerical treatment of incompressibility at large deformations. A non-associated slip rule is employed in the contex of the plasticity theory of friction, with nonlinear master segment geometry describing the contact kinematics. Consistent linearisation in all aspects of algorithmic development provides robust and quadratically convergent solutions. This is shown in 2-D plane strain and axisymmetric numerical examples, where simulations of both cold and hot bulk metal forming processes are performed.
    Vir: Journal de physique. IV. - ISSN 1155-4339 (Vol. 3, colloque C7, 1993, str. 1199-1209)
    Vrsta gradiva - članek, sestavni del
    Leto - 1993
    Jezik - angleški
    COBISS.SI-ID - 6495

vir: Journal de physique. IV. - ISSN 1155-4339 (Vol. 3, colloque C7, 1993, str. 1199-1209)
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