B. Curved Stiffener Parallel to a Hole
- Last UpdatedDec 08, 2025
- 2 minute read
When a curved stiffener is set parallel to a hole the following sub-syntax should be used.
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<parallel_hole>::= |
CURVED, |
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,CNO = <hole_no> |
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<end_<i>>::= [CON = <con_code>,[<stiff_ref>]][,<line<i>>] |
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CNO is assigned the number of the hole parallel to which the stiffener should be set.
The stiffener will follow the entire hole contour if no end point is explicitly defined. It may also be restricted to a certain part of it by the intersection of the displaced contour with a line or another stiffener. Since multiple intersections always will occur with a line the first intersection point in the direction of the line will be selected as the end point.
The stiffener is supposed to follow the hole in the clockwise direction if CNO > 0, that means, so that the mold line side of the stiffener is facing the hole (and the flange, if any, is in the direction away from the hole). If CNO<0 then the flange will be directed inwards the hole. A given connection code will not be used in the calculations in this case.
M1 is the distance from the hole contour to the trace curve of the stiffener. M1>0 if the stiffener should be moved away from the hole, that means, into the plate. If M1<0 then the trace curve is moved into the hole.
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Examples: |
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1. |
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Stiffener following the complete contour of a hole. |
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STI, ....., CUR, M1=20, CNO=5, CON=40, CUT=1100/CON=40, CUT=1100, |
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2. |
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Stiffener set between two restricting lines. |
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STI, ... , CUR, CNO=5,M1=20, |
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3. |
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Stiffener set between the same restricting lines but along the other part of the hole. |
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STI, ... , CUR, CNO=5, M1=20 |
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