Abstract: A plasticity theory is presented using the usual concept of a loading surface which moves and isotropically grows, but in addition uses a “limit surface” which grows and moves independently ...

Abstract: A set of finite-difference equations which approximate the plane-strain motion of a rotatory inertia and transverse shear plate are examined in detail. The equations are stated in such a form ...

Abstract: Methods of numerical time integration of the equation M̄q̈ + K̄q = f are examined in this paper. A particular class of explicit time integration methods is defined and this class is searched ...

Abstract: The accuracy of integration of the constitutive equations for an isotropic elastic-perfectly plastic von Mises material is examined. A strainrate vector of arbitrary direction, but constant in ...