A modified implicit–explicit integration scheme: an application to elastoplasticity problems

A Conservative Eulerian Numerical Scheme for Elastoplasticity and Application to Plate Impact Problems

We present a numerical method for computing elasto-plastic ows in metals. The method uses a conservative Eulerian formulation of elasto-plasticity together with a higher-order Godunov nite diierence method combined with tracking of material boundaries. The Eulerian approach avoids the problem of mesh distortion caused by a Lagrangian remap, and can be easily extended to the computation of ows i...

An Implicit Integration Procedure for Plane Stress J2 Elastoplasticity

A stress integration algorithm for the finite-step elastoplastic constitutive equations of J2 material models under plane stress condition is presented. The procedure is referred to a two-dimensional continuum model consistently derived from the threedimensional one by implicitly fulfilling the constraint enforced by the plane stress condition. A direct exploitation of the property which charac...

A Gibbs sampling scheme to the product partition model: an application to change-point problems

This paper extends previous results for the classical product partition model (PPM) applied to the identification of multiple change points in the means and variances of time series. Prior distributions for these two parameters and for the probability p that a change takes place at a particular period of time are considered and a new scheme based on Gibbs sampling to estimate the posterior rele...

A Novel Integration Scheme for Partial Di erential Equations : an Application to the Complex Ginzburg - Landau

An approach to elastoplasticity at large deformations

While elastoplasticity theories at small deformations are well established for various materials, elastoplasticity theories at large deformations are still a subject of controversy and lively discussions. Among the approaches to finite elastoplasticity two became especially popular. The first, implemented in the commercial finite element codes, is based on the introduction of a hypoelastic cons...