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The complexity of automobile powertrains grows continuously. At the same time, development time and budget are limited. Shifting development tasks to earlier phases (frontloading) increases the efficiency by utilizing test benches instead of prototype vehicles (road-to-rig approach). Early system verification of powertrain components requires a closed-loop coupling to real-time simulation models, comparable to hardware-in-the-loop testing (HiL). The international research project Advanced Co-Simulation Open System Architecture (ACOSAR) has the goal to develop a non-proprietary communication architecture between real-time and non-real-time systems in order to speed up the commissioning process and to decrease the monetary effort for testing and validation. One major outcome will be a generic interface for coupling different simulation tools and real-time systems (e.g. HiL simulators or test benches).

Within the context of a research project of ESI ITI GmbH in cooperation with the TU Dresden, a modularly structured chassis library for SimulationX is being developed. The data is transferred consistently and user-friendly by using a Parameterization Line consisting of various test benches. The measurements are carried out at component, subsystem and total vehicle level. In addition to geometry and mass data, it is also possible to determine the characteristics of the rubber suspension mounts, for example, which are essential for elastokinematics. Model parameters are determined directly by means of suitable evaluations or by optimization. The chassis library for the construction of the vehicle models contains not only main chassis components such as link, shock absorber and bearing models but also ready-made templates for all common axle types as well as model elements for the driver, track and environment.