2. Modeling A

2.1. Geometry

This two-dimensional case is a square with a unit side.

It is divided into two parts according to the equation diagonal x + y = 1.

2.2. Boundary conditions and changes

The piece is stuck in translation on the left side:

Segment BORD_GAU: DNOR = 0

It is locked in rotation around the origin: DY = 0

Pressure is applied to the upper edge.

Segment BORD_SUP: PRES = 1000.

The other edges have zero stress.

2.3. Characteristics of the mesh

The structure is meshed in a « British flag », with TRIA6 elements. The edges are meshed in SEG3. The sketch shows the sub-domain number assigned to each triangle.

2.4. Benchmark results

The displacement is tested on the node opposite to the origin.

	After adaptation 4	After adaptation 5
XX	5,1236224 10—3	5,1284749 10—3
DY	—2,7452157 10—2	—3,1219320 10—2

2.5. notes

It can be seen that the overall quantities (masses, center of gravity,…) are well preserved by the adaptation process.