This function is similar to concentrating elements at a point but allows you to concentrate mesh elements at vertices, along edges, and over entire faces. The density of the mesh elements will be higher along the selected geometry when the mesh is generated.
The following figure shows the symbol for concentrating elements on a face. This symbol is the same for a point on edges.
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 Vertex in the Local Geometry area of the Mesh Conditions dialog box.
The Local Geometry dialog box opens, with the current study, if any, automatically available in the Study dialog 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, enter the desired name for this mesh condition in the Name box.
4. Click Ref Vertex. Using the mouse cursor, click at the vertex around which you want to concentrate the mesh elements.
When you make your selection, the Ref Vertex box shows the point as "defined".
5. Click Value in the Local Geometry dialog box. Type a value for the concentration of elements at the selected vertex. 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 on vertices, click Next and repeat the procedure. You can do this for as many locations as needed.
7. When you finish defining vertices for concentrating the mesh, click to complete the procedure.
To concentrate elements along 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 Edge in the Local Geometry area of the Mesh Conditions dialog box.
The Local Geometry 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, enter the desired name for this mesh condition in the Name box.
4. Click Ref Edge. Using the mouse cursor, click at the edge along which you want to concentrate the mesh elements.
When you make your selection, the Ref Edge box shows the point as "defined".
5. Click Value in the Local Geometry dialog box. Type a value for the concentration of elements along the edge. 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 along edges, click Next and repeat the procedure. You can do this for as many locations as needed.
7. When you finish defining edges for concentrating the mesh, click to complete the procedure.
To concentrate elements over 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 Face in the Local Geometry area of the Mesh Conditions dialog box.
The Local Geometry 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, enter the desired name for this mesh condition in the Name box.
4. Click Ref Face. Using the mouse cursor, click at the face over which you want to concentrate the mesh elements.
When you make your selection, the Ref Face box shows the point as "defined".
5. Click Value in the Local Geometry dialog box. Type a value for the concentration of elements on the face. Units of measure for this value are displayed above the Value box.
The value you enter defines the size of the smallest element 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 over faces, click Next and repeat the procedure. You can do this for as many locations as needed.
7. When you finish defining faces for concentrating the mesh, click to complete the procedure.
to complete the procedure.