Applications

In the following, utilizing our new modeling technique for rotationally symmetric bodies with spherical respectively universal joints as presented in section 1.8, we derive a natural coordinate model for a wheel suspension system for upper-class passenger cars as shown in figure 4.1. The modeling process will be described in detail in the present section followed by a comparison of different multibody integrators on this model as well as a relative coordinate one in the next section. The relative coordinate model is a modification due to Grupp and Simeon1 [GS94] of the original proposal by HILLER and FRIK [HF91] in [KSP91]. We have already seen in section 1.7 that the new natural coordinate model has the potential to speed up simulation considerably in connection with an appropriate integration scheme based on inverse dynamics like MBSIDY, i.e. if modeling and simulation are optimally dovetailed.