Hello, 

I am currently replicating Manchester benchmarks vehicle 1 in Simpack rail. During this work I faced a problem in the simulation or postprocessing of the results. I have generated Track 2 simulation case, where a step excitation of 5mm is induced to the tracks (picture below). Otherwise, the track is straight.  In the postprocessing I get a results that my lateral track excitation is 5mm, and my wheelset lateral displacement gets an impulse at the location of the track excitation, and the oscillation dampens away. This is correct behaviour. However, my wheelset body position converges to 10mm, which can not be true. For the wheelsets the BRF markers are located in the mass center, and the track is straight, so the body position should converge to 5mm. The same 10mm converged result is obtained for other vehicle bodies as well.  My question is, how can I obtain the correct displacements of bodies with respect to track in this software?