The Tech Support request has not reached us yet at Wolfram MathCore, but we'll take a shot to reply here. We have some very experimental and undocumented support for the reproduction of 3D graphics produced in System Modeler simulation results in Mathematica. The corresponding Graphics3D objects at time t are produced with sim["Graphics3D", t], with sim being the SystemModelSimulationData object. For instance: If this works for your model, then you could then export these objects. But from the phrasing of your question you seem to want to export each multibody object separately in a directory structure at each time step. In that case, the call above may still be helpful. You can selectively turn off the animation of all but one of the bodies and request the model's "Graphics3D" so that you can get one body at a time as a Graphics3D, and proceed to do this with each individual body: Then there is the possibility that the "Graphics3D" property does not work for your model, in which case, you may have to extract by hand the simulation results for the positions and alignments of the individual objects, generate Graphics3D objects from them, and them exporting them independently as you choose to.