Chamfers and Fillets

Corners in surface models may lead to singularity effects. RFEM offers two functions by which you can adjust corners using chamfered edges or fillets. They are available in the Tools menu → Modify Lines. Alternatively, you can use the or buttons available in the CAD toolbar (see image Modeling Tools ).

Functions for Adjusting Corners

Create Angled Corner

The Create Angled Corner function creates a new line in the corner area, cutting the edge at the corner node.

Creating Angled Corner

List of Lines

Select the lines one after the other in the work window by clicking the mouse, or enter the line numbers. You can use the button to change the order of the line numbers. The button deletes the line numbers.

Parameters

Two corner types are available in the drop-down list to create the chamfer:

• Both Edges: The first line is shortened by the length L₁, the second line by the length L₂.
• Edge and Angle: The first line is shortened by the length L₁. It is connected to the second line by the angle α. The angle is related to a coordinate system that is oriented clockwise.

Options

If the 'Cut lines' check box is ticked, the projecting lengths of the original lines are deleted within the corner area after the chamfer has been created.

The 'Delete corner node' option also removes the node at the original intersection.

Create Round Corner

The Create Round Corner function creates a new arc at the intersection of two lines and rounds out the corner area.

Creating Round Corner

List of Lines

Select the lines one after the other in the work window by clicking the mouse, or enter the line numbers. You can use the button to change the order of the line numbers. The button deletes the line numbers.

Parameters

Specify the fillet radius r of the arc to be created between the lines.

Options

If the 'Cut lines' check box is ticked, the projecting lengths of the original lines are deleted within the corner area after the fillet has been created.

The 'Delete corner node' option also removes the node at the original intersection.

With the 'Divide arc into segments' check box, you can divide the arc into a corresponding number (n) of straight segments.