Boundary Line Segments
Description: Defines a curve which is comprised of a number of line segments via grid points that may come in contact with another curve.
Format:
Example:
Alternate Format and Example:
| Field | Definition | Type | Default |
|---|---|---|---|
| ID | Boundary line identification number. | Integer > 0 | Required |
| Gi | Grid point identification number(s). Grid points form line segments of a curve and must be ordered so that the normal to the segment points toward the other curve. See Remark 2. | Integer > 0 | Required |
| INC | Grid point identification number increment. | Integer or blank |
Remarks:
- Boundary line identification numbers must be unique with respect to all other BLSEG and BSSEG entries.
- A line segment is defined between every two consecutive grid points. The number of segments defined equals the number of grid points specified minus one.
- The width of each segment is defined via the BWIDTH Bulk Data entry. The BWIDTH entry requires the same ID as the BLSEG entry. For each segment defined on the BLSEG entry a corresponding width is defined on the BWIDTH entry.
- The normal to the segment is determined by the cross product of the slide line plane vector (i.e., the z-direction of the coordinate system defined in the CID field of the BCONP Bulk Data entry) and the vector formed from node 1 to node 2 of the segment.