Enlarge one area of the mesh with the zoom.
Select Label->All on in->Points>Nodes . The result is shown.
- The node identifiers created by generating the mesh appear on the screen. There is one identifier for each vertex of each element.
- Select Mesh->Quadratic type->Quadratic.
NOTE : By default GiD meshes with first polynomial degree=1 (linear) elements. To find out which mode GiD is working in, go to Mesh->Quadratic type.
- Select Mesh->Generate mesh.
- A window opens asking whether the previous mesh should be eliminated. Click Yes.
- Another window appears in which the maximum desired element size should be entered. Leave the default value unaltered and click OK.
Once the mesh has been generated, select Label->All >All on in->Points>Nodes. The result is shown in Figure 15next figure. Now, there are not only nodes at the vertices, but also at the midpoints of the edges of the elements.
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- Select Mesh->Quadratic type->Quadratic9.
- Select Mesh->Generate mesh.
- A window opens asking whether the previous mesh should be eliminated. Click Yes.
- Another window appears in which the maximum desired element size should be entered. Leave the default value unaltered and click OK.
- Select Label->All >All on in->Points>Nodes (see Figure 16next figure).
Notice that the four-sided elements (quadrilaterals) also have a node in the center, in addition to the nodes at the vertices and midpoints of the edges. Similarly, hexahedra also have a node at their center point.
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