fatal error while running MAP++ indepedently

Wind & Water Structural Analysis
1

The error message: Invalid logical input for file “input_file.map” occured while trying to read Echo

“input_file.map”:
--------------- LINE DICTIONARY --------------------------
LineType Diam MassDenInAir EA CB CIntDamp Ca Cdn Cdt
(-) (m) (kg/m) (N) (-) (-) (-) (-) (-)
Mat_1 0.1 61.65 1650000000 1.0 0 0 0 0
-------- NODE PROPERTIES ------------------------------
Node Type X Y Z M B FX FY FZ
(-) (-) (m) (m) (m) (kg) (mֻ†3) (N) (N) (N)
1 fix 400 0 -124 0 0 # # #
2 Vessel 30 0 -22 0 0 # # #
3 fix -200 346 -124 0 0 # # #
4 Vessel -15 26 -22 0 0 # # #
5 fix -200 -346 -124 0 0 # # #
6 Vessel -15 -26 -22 0 0 # # #
---------------- LINE PROPERTIES ---------------------------
Line LineType UnstrLen NodeAnch NodeFair Flags
(-) (-) (m) (-) (-) (-)
1 Mat_1 490 1 2
2 Mat_1 490 3 4
3 Mat_1 490 5 6
-------------------- SOLVER OPTIONS-----------------------
Option
(-)
repeat 120 240

2

Dear Moti,

My guess is your input file is not formatted properly. Are you executing MAP++ or MoorDyn? I see that you have damping and drag values specified, which makes me think you are trying to run MoorDyn, but you say your running MAP++.

In MAP++, the first line in the input file should be the “LINE DICTIONARY” header. In MoorDyn, the third line in the input file is Echo.

Best regards,

3

Thank you Jason,

I am running MAP++.
I sent the commands window and the input file to your mail.

best,
Moti Keinan

4

Dear Moti,

From the command prompt you forwarded me, it looks like you are calling the FAST v8.16 Windows executable, but are sending it the name of the MAP++ input file rather than a FAST primary input (*.fst) file. You are not actually “running MAP++ independently”, as the forum topic subject says.

Can you clarify what you are trying to do? Are you trying to run MAP++ standalone, independent from FAST? Or you are trying to run a coupled FAST model of a floating wind turbine?

Best regards,

5

Dear Jason,

Eventually I wand to introduce a mooring system by the (degenerated) 6x6 stiffness matrixs.

Best, Moti

6

Dear Moti,

OK, I gather that you are trying to run standalone MAP++, uncoupled from FAST, to derive the 6x6 stiffness matrix of the mooring system. MAP++ can be run standalone through a python driver. This is documented in the online MAP++ documentation: map-plus-plus.readthedocs.io/en … index.html.

Best regards,