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/SURF/SEG

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/SURF/SEG
/SURF/SEG

Block Format Keyword

/SURF/SEG - Surface Definition (Segments)

Description

Describes the surface segments definition.

Format

(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)	(9)	(10)
/SURF/SEG/surf_ID/unit_ID
surf_title
seg_ID1	node_ID1	node_ID2	node_ID3	node_ID4
seg_ID2	node_ID1	node_ID2	node_ID3	node_ID4
...	...	...	...	...
seg_IDn	node_ID1	node_ID2	node_ID3	node_ID4

Format for 2D and axisymmetrical analysis

(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)	(9)	(10)
seg_ID1	node_ID1	node_ID2
seg_ID2	node_ID1	node_ID2
...	...	...
seg_IDn	node_ID1

Field	Contents
surf_ID	Surface identifier (Integer, maximum 10 digits)
unit_ID	Optional unit identifier (Integer, maximum 10 digits)
surf_title	Surface title (Character, maximum 100 characters)
seg_ID1, seg_ID2, seg_IDn,	Segment identifier (optional) (Integer)
node_ID1	Node identifier 1 (Integer)
node_ID2	Node identifier 2 (Integer)
node_ID3	Node identifier 3 (Integer)
node_ID4	Node identifier 4 (optional for triangular elements) (Integer)

1.	Surfaces are used to define interfaces in 3D analysis and pressure loads.

2.	The node_ID4 may be omitted for triangular elements.

3.	Segments may be given by “cut and paste” of shell element input data.

4.	All nodes must belong to a shell element, a brick element or a triangular shell element.

5.	A surface cannot be defined using Madymo surfaces.

6.	A surface cannot be defined by associating a hyper-ellipsoid and another type of surface.