Welded Flanges

The following syntax is used for the flange statement when the flange is a profile, welded to the plate edge, either along the outer contour or in a hole.

Syntax:

FLANGE

      [,<symmetry>]
      , <profile>
      [,CURVED]
       ,LIM= <limit_no> [, <at_line>]
      { }
       ,CNO= <hole_no>
      [,INC=<inclination>]
      [,QUAL= <quality>]
      [,DEST=<destination>]
      [,SURF=<surface_treatment>]
      [,POS= <pos_no> (1 ... 25)]
      [,WELD= <leg_length>]
      [,UNSYM= <hangout>]
      [,SHR]
      [,NO= <flange_no> (1 ... 25)]
      [,COL[OUR]= <colour>]
      [,COM[MENT]=<comment>]
      [< <id's>]
      [<assembly>]
      <end_point_1>/<end_point_2> ;

Profile data, symmetry, excess, position number, quality assembly, destination, surface treatment, welding, shrinkage compensation and the flange number are handled in the same way as for stiffeners.

Profile types that may be used are flat bars (face plates) and round bars/pipes.

Description

The contour along which the flange is set can either be a limit (LIM) of the panel or a hole with a given number (CNO).

The alternatives are:

1. Let the end be defined by the intersection between a given one-coordinate line and the given limit.

   <one_coord_line_1>::=

   U1|V1|X1|Y1|Z1::= <coord>

   If the line is defined outside the limit end, the flange is extended in the tangent of the end point.

2. Connect the flange to another profile.

   (For <ext_prof_ref>, see General Layout of a Statement.)

   In this case, end cut angles may be added automatically.

3. If no line and no profile is given, then start/end at the distance from one of the end points of the limit, as defined by the connection code.

   <end_curved_1> is equal to <end_straight_1> with the exception that a curved flange cannot be connected to another profile.

   <end_in_hole_1> defines the end of a flange in a hole.

   <end_in_hole_1>::= [, <fl_line_1>]

   If nothing is specified about the end points, the flange is supposed to follow the hole contour completely.

   Otherwise, the flange must be restricted by a line, intersecting the hole contour. Since there are always two intersection points between an infinitely long line and a closed contour, there is an additional rule:

   "The first intersection point in the direction of the line is selected", see the image below.

   

   <fl_line_1>::= <line_uvt_1> |

   (X1|Y1|Z1= <coord>)

   <end_point_2> Equal to <end_point_1> if all indices "1" are replaced by "2".

   Note: Since a line described in the xyz-system in this case cannot be given an arbitrary direction, it might be necessary to use a uv-line.

   <end_point_2> Equal to <end_point_1> if all indices "1" are replaced by "2".

To sum up, the end points can be defined in one of the following ways.

4. By a line intersecting the limit (or the hole). In a hole, the direction of the line is significant for selection of an intersection point.

5. By connection to an intersecting profile. (only straight flanges)

6. By ending a certain distance from a corner as defined by a connection code (not for flanges in holes).

7. By setting a flange along a complete hole contour (only flanges in holes).

Remark:

If an end point of the flange is generated according to the alternatives 1) and 3) above, then adding an angle to the end cut means that the mold line of the flange will be changed accordingly. See the example below.

... CON=15, CUT=1100, 45 ... moves the end point of the flange from P to S.

Examples: