Folded (Bent) Flange
- Last UpdatedDec 08, 2025
- 2 minute read
Folded (bent) flanges are generated using the following sub-syntax.
The characteristics of the folded flanges are normally defined by each customer, utilizing the facility. Each customer may define several flange types, one of which is the default type.
This handling of flanges is activated by assigning the logical variable SBH_FLANGE_CTRL.
If the customer does not define his own flange standard, the system will use the built in flange standard, described below.
Bent flanges can only be generated along a straight part of the outer contour.
The addition of a bent flange normally means that the geometry of the outer contour will be modified. To restore it, the BOUNDARY statement may have to be re-executed. Before doing so, it might be necessary to delete the flange. Likewise, a regeneration of the BOUNDARY means that the FLANGE statement must be regenerated.
Syntax:
FLANGE, SID= <direction>
,LIM= <limit_no> [, <at_line>]
[,TYPE= <flange_type>]
,H= <flange_width>
<end_point_1>/<end_point_2> ;
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SID |
See STIFFENER statement. |
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LIM |
See Flat Bar Flanges above. |
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TYPE |
Relevant only when the new flange handling has been activated. |
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If then left out the user defined default flange type will be used. Otherwise TYPE must be assigned one of the user defined flange types. |
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H |
The nominal height of the flange. |
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The width of the added material for the built-in flange standard is described below. |
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For the customer defined flange standard, each customer controls himself the calculation formula. |
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<end_point_1> |
defines the start of the flange. |
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<end_point_1>::= |
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If no restricting line is given, the flange will start from the beginning of the selected straight part of the limit. |
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CUT |
If the customer controlled flange handling is activated, the default flange end type will be used if not otherwise specified. Via CUT the user may select any other flange end type, set up in the flange definition file. |
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<end_type>::=<integer> |
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M1 is the angle at the start of the flange. |
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<angle>::= <number> |
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In the customer control flange definition, M1 will override the angle defined in the flange definition file. In the default flange handling it will replace the built-in default value of 30 degrees. |
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<end_point_2> |
is equal to <end_point_1> if, in all keywords, "1" is replaced by "2". |
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The two end points should follow each other in the circulation direction of the contour. |
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Remark: The length of the free edge of the folded flange must exceed the given value H, otherwise an error will be signaled. |
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