The riser data record specifies that inter-element forces are to be calculated assuming that a riser-type structure has been defined.
When this card is input, the program makes the following assumptions:
Only tube elements are used to describe the riser in Data Category 2.
The first node of the first tube describing the riser is the node at the seabed end. The first node of all the other elements must be the second node of the previous element.
If there is a connection to a fixed point this must be at the seabed end of the riser.
2 5 7 11
- --- -- ---- -----
|X| | |RISR| |
- --- -- ---- -----
| | | |
| | | |
| | | |
| | | |_(1) Structure Number (I5)
| | |
| | |_Compulsory Data Record Keyword (A4)
| |
| |_Optional User Identifier (A2)
|
|_Compulsory END on last data record in Data Category (A3)(1) The structure number must correspond to one of the structures defined in Data Category 2. If '1' is input, this will correspond to the structure defined in Data Category ELM1. If '2' is input, this will correspond to the structure defined in Data Category ELM2, etc.