# Plate Knuckle Rules - Intergraph Smart 3D - Reference Data - Hexagon PPM

## Intergraph Smart 3D Molded Forms Reference Data

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Intergraph Smart 3D
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Molded Forms
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Reference Data
Smart 3D Version
13

The Plate Knuckle Rule in the SM_PlateKnuckleRules.xls workbook determines if a knuckled plate should have the knuckle manufacturing type set to bent or split.

Visual Basic Project: [Programming Resources Folder]\Programming\ExampleCode\ShipStructure\Rules\PlateKnuckleRule\PlateKnuckleRule.vbp

Compiled Rule: [Reference Data Folder]\SharedContent\Bin\ShipStructure\Rules\Release\PlateKnuckleRule.dll

The BendOrSplitRule.cls class module contains the plate knuckle rules.

You can modify the following:

• The knuckle manufacturing method, such as bent or split.

• The inner radius for a bent knuckle.

The software uses the following convention to determine the knuckle manufacturing type to use as the basis of the rule:

• If the knuckle is on the hull, the knuckle type is set to split.

• If the knuckle is not on the hull and the knuckle curve is linear, the knuckle type is set to bend. The inner radius is determined by the plate thickness.

• If the plate thickness is less than 10mm, the inner radius is set to 50mm.

• If the plate thickness is less than 20mm but greater or equal to 10mm, the inner radius is set to 100mm.

• If the plate thickness is less than 30mm but greater or equal to 2 mm, the inner radius is set to 150mm.

• If the plate thickness is greater or equal to 30mm, the inner radius is set to 200mm.

• If the knuckle curve is non-linear, the knuckle type is set to split.