Premium
Plastic and viscoplastic flow of void‐containing metals. Applications to axisymmetric sheet forming problems
Author(s) -
Oñate E.,
Kleiber M.,
De Saracibar C. Agelet
Publication year - 1988
Publication title -
international journal for numerical methods in engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.421
H-Index - 168
eISSN - 1097-0207
pISSN - 0029-5981
DOI - 10.1002/nme.1620250118
Subject(s) - viscoplasticity , rotational symmetry , void (composites) , materials science , mechanics , plasticity , hardening (computing) , porosity , sheet metal , finite element method , strain hardening exponent , constitutive equation , composite material , structural engineering , physics , engineering , layer (electronics)
A formal analogy between the equations of pure plastic and viscoplastic flow theory for void‐containing metals and those of standard non‐linear elasticity is presented. The formulation is particularized for the analysis of axisymmetric sheet metal forming problems using simple two node linear finite elements. Details of the treatment of friction and strain hardening phenomena, time increment computation and elastic effects are also given. Examples of the effect of void porosity on the hemispherical stretching of a circular sheet are presented.