1. Reference problem

1.1. Geometry

Figure1: Reference problem

The specimen is axi-symmetric, and only half of the specimen is modelled by elements. The dimensions are given here in millimeters.

1.2. Material data

The material in question is elastoplastic with linear isotropic work-hardening of the von Misès type (VMIS_ISOT_LINE).

The material data used is as follows:

Young’s module:	\(200000\mathrm{MPa}\)
Poisson’s Ratio	\(\mathrm{0,3}\)
Elastic limit	\(200\mathrm{MPa}\)
Linear work hardening module	\(20000\mathrm{MPa}\)

1.3. Boundary conditions and loads

Because of the symmetry, vertical movements are blocked on line \(\mathrm{P0}-\mathrm{P1}\) and horizontal movements are blocked on the \(\mathrm{P0}-\mathrm{P9}\) axis; the load consists of a vertical displacement imposed on the side \(\mathrm{P8}-\mathrm{P9}\):

axis \(\mathrm{P0}-\mathrm{P9}\)	\(\mathrm{DX}=0\)
axis \(\mathrm{P0}-\mathrm{P1}\)	\(\mathrm{DY}=0\)
axis \(\mathrm{P8}-\mathrm{P9}\)	\(\mathrm{DY}=6\mathrm{mm}\)

Charging is imposed in 50 increments of \(0.12\mathrm{mm}\).