Excess Statement
- Last UpdatedDec 08, 2025
- 2 minute read
The EXCESS statement defines excess along one of the limits of the current panel. The geometry of the panel will be modified when the parts are extracted.
Syntax
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EXC, LIM=<lim_no>,M1=<size>[,TYP={<ename>|<ename>}] [,<symmetry>] ; |
Description
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LIM |
defines the limit along which to add excess. |
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<lim_no>::= <integer> |
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M1 |
defines the amount of the excess. |
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<size>::= <number> |
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TYP |
Defines the excess type and must be one of the excess types given in the default file of Planar Hull Modelling. |
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<symmetry> |
Normally excesses on a symmetric panel are supposed to be valid both portside and starboard. |
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However, it is possible to indicate that an excess should be used portside only or starboard only. This clause is relevant on a symmetric panel ("SBPS panel") only. |
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<symmetry>::= P | S |
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P means portside only. |
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S means starboard only. |
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May not be set in knuckled subpanels. |
Remarks:
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For excess along inner seams, see the SEAM statement.
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Excess may be added only to limits which fulfill the following condition:
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Split the limits into separate contours and extend them at both ends along the tangents in the end points.
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Make a parallel displacement of those limits which have excess.
The contours, thus extended and moved, must now intersect, otherwise an error will occur in the splitting phase.
This means that an excess can not be added in the case illustrated below. Limit 3 will not intersect limit 2 after the parallel displacement.
In such a case, the limits must be reorganized or the excess has to be included in the original contour.
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It is possible to have multiple excess types along one limit. Up to five individual excess types along a boundary limit can be used. For inner seams one type is allowed. If some excess are of the same type, an error will be signaled. The excess types are lost in the plate and are only available in the panel.
Example:
EXC, LIM=2, M1=50;