1. Stress an d plastic strain of engine mounting system bracket an d bracket, transmission system bracket an d bracket, rear suspension tie rod, an d analysis of vehicle mode an d ground mode;
2. The stress an d plastic strain of sheet metal parts, as well as the analysis of vehicle mode an d ground mode, especially for different positions of welding elements, have different effects on the stress distribution of structures.
3. For the problem of bolt connection between mounting systems, it is necessary to calculate the unit support reaction of bolts, so as to check the strength of bolts.
4. Rubber parts mainly include stiffness analysis of rubber parts of suspension main spring an d bushing of stabilizer rod an d rubber strain analysis （surface strain an d volume strain）.