This function allows you to create a point on an edge or a face where the density of mesh elements will be increased when the mesh is created. By increasing the density of the mesh elements, the number of nodes in these areas is increased. As previously discussed, the solving engine calculates results at nodes. Therefore, the more nodes concentrated in critical areas of the model, the greater the accuracy of the results for those areas.
Mesh conditioned at a point on a face
To concentrate elements at a point on an edge,
1. Click Modify and then, in the Mesh group, click the arrow next to Conditions.
2. Click Create. The Mesh Conditions dialog box opens.
3. Click Pt on Edge in the Concentrated section.
The Concentrated dialog box opens, with the current study, if any, automatically available in the Study box.
If there is no current study, or if you wish to select a different one, enter the name of the study in the Study box.
In addition, the Name box displays the default name for this mesh condition. If you wish to provide a different one, type the desired name for this mesh condition in the Name box.
4. Click Ref Position. Using the mouse cursor, click at the point on the edge where you want to concentrate elements.
When you make your selection, the Ref Position box shows the point as "defined".
5. Click Value in the Concentrated dialog box. Type a value for the concentration of elements at the selected point. Units of measure for this value are displayed above the Value box.
The value you enter defines the size of the smallest element at the point of concentration. Enter a value that is small enough in proportion to the computed average element size. (See: AutoMesh for information on the computed element size.)
6. If you wish to set other element concentrations at points on edges, click Next and repeat the procedure. You can do this for as many points as needed.
7. When you finish defining edge points for concentrating the mesh, click to complete the procedure.
To concentrate elements at a point on a face,
1. Click Modify and then, in the Mesh group, click the arrow next to Conditions.
2. Click Create. The Mesh Conditions dialog box opens.
3. Click Pt on Face in the Concentrated section.
The Concentrated dialog box opens, with the current study, if any, automatically available in the Study.
If there is no current study, or if you wish to select a different one, enter the name of the study in the Study box.
In addition, the Name box displays the default name for this mesh condition. If you wish to provide a different one, enter the desired name for this mesh condition in the Name box.
4. Click Ref Position. Using the mouse cursor, click at the point on the face where you want to concentrate elements.
When you make your selection, the Ref. Position box shows the point as "defined".
5. Click Value in the Concentrated dialog box. Type a value for the concentration of elements at the selected point. Units of measure for this value are displayed above the Value box.
The value you enter defines the size of the smallest element at the point of concentration. Enter a value that is small enough in proportion to the computed average element size. (See: AutoMesh for information on the computed element size.)
6. If you wish to set other element concentrations at points on faces, click Next and repeat the procedure. You can do this for as many points as needed.
7. When you finish defining face points for concentrating the mesh, click to complete the procedure.
to complete the procedure.