Hi Bjorn!
Cool model, though I can not tell you anything about its correctness. Hopefully I can help you with your CombiTimeTable problems instead!
A CombiTimeTable can contain several dataset in a single table, so the first part of the dialog is asking you to specify which dataset you want to connect from. Multibody forces are three-dimensional so the second part of the dialog is asking you in which direction you want the force to be applied to.
The 3 signals of the force connector are interpreted as the x-, y- and z-coordinates of a force acting at the frame connector to which frame_b of this component is attached.
I think your datafile need to be in a certain format for CombiTimeTable to be able to read it. One easy way to create such files is using Mathematica:
Needs["WSMLink`"];
Export["combitimetable.txt", {{"var1", {{0, 0}, {1, 2}, {2,
4}}}, {"var2", {{0, 2}, {1, 3}, {2,
4}}}}, {"ModelicaCombiTimeTable"}]
I have attached your data in the CombiTimeTable format. Please note that you will need to specify the table name "vehicleForce" in the tableName parameter and the columns to read from {2,3} in the columns parameter. When you do that the output from your CombiTimeTable will be an 2-dimensional array where y[1] will be the interpolated values from the second column and y[2] from the third.
Attachments: