Manufacturing Requirements for Profile Cross Sections - Intergraph Smart 3D - Reference Data - Hexagon PPM

Intergraph Smart 3D Molded Forms Reference Data

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English (United States)
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Intergraph Smart 3D
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Molded Forms
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Reference Data
Smart 3D Version
13

All profile cross sections must support the IJUAXSectionMfgProperties and IJUAXSectionMatlProperties virtual interfaces.

IJUAXSectionMatlProperties

ShearCenterLoc_X

ShearCenterLoc_Y

CentroidLoc_X

CentroidLoc_Y

IJUAXSectionMfgProperties

OriginKeyPoint

XDirectionKeyPoint

YDirectionKeyPoint

The Shear Center is the point at which a shear force can act without producing any twist in the section. The centroid of a cross section shape is the arithmetic mean (average) position of all the points in the shape.

Shear Center and Centroid are both required properties to unfold a profile part in Structural Manufacturing. Shear Center gives the axis information about which the profile is untwisted. The Centroid gives the axis about which the profile is unbent.

OriginKeyPoint, XDirectionKeyPoint and YDirectionKeyPoint values are used only in Structural Manufacturing to interpret the location of Centroid and Shear Center. Centroid and Shear Center locations should be given correctly relative to these key points.

The following example shows how to define a cross section centroid with respect to key points defined in Cross Section work sheet:

Any of the following rows are correct for the previous figure:

OriginKeyPoint

XDirectionKeyPoint

YDirectionKeyPoint

Centroid_X

Centroid_Y

1

23

13

15

75

13

15

1

15

25

23

15

1

75

35