2. Modeling A#

2.1. Characteristics of the mesh#

The structure is modelled by a regular mesh composed of \(8\times 8\) TRIA6, respectively along the \(x,y\) axes. The interface is not meshed.

_images/10000000000002EE000002F4832CAD5C0E318EE3.png

Figure 2.1-1 : Plate mesh (TRI6)

2.2. Tested sizes and results#

The bifurcation is located along an edge, on the segment of vertex nodes \((\mathrm{0,}0.5)\), \((\mathrm{0,}0.625)\) and middle node \((\mathrm{0,}0.5625)\). The fork takes place precisely at point \((\mathrm{0,}0.55)\) and the interface does not go through the middle node.

We then test the movement on the middle node positioned in \((\mathrm{0,}0.5625)\), to verify that it is positioned on the « right » side of the interface.

Identification

Reference

Tolerance

DEPL_X

NO_M: H1X

1.0

1E -12%

NO_M: DX

1.0

1E -12%

2.3. Additional results#

We find the « regularization » of the bifurcation in the vicinity of the coordinate point \((\mathrm{0,}0.55)\).

_images/1000000000000392000003243F5F95F5805E8A94.png

Figure 2.3-1 : Field of movement along X for the fork « before » the midpoint