As showed in Fig. 1, at first, the software packages for
analyzing running stability are programmed for each model
type included in the dynamic model library; then, according
to the parameter mapping relationship between the 3D CAD
model and the dynamic model, the requested dynamic
parameters will be listed and extracted from the CAD model
through a designed extraction flow realized by secondary
development of CAD software. Finally, the software
packages for analyzing running stability will be directly
called by the background program and the analysis results
will be presented in CAD environment, which are also
realized by secondary development of CAD software. The
detail steps are illustrated in the following sections.