单斜臂式悬架, 空间机构, 坐标系变换, 悬架等效刚度

A method of coordinate transition in spatial mechanism theory was introduced to study the revolving movement of the arm in a semi-trailing arm suspension around a space-fixed axis, based on which the relationship between the rigidity of suspension and that of the coil spring as well as relationship between suspension damping-coefficient and shock absorber damping-coefficient was exactly derived.As a result the change of suspension rigidity and damping coefficient with respect to wheel bumping movement was plotted accurately. A calculation program was composed to make the calculation process feasible and efficient, while the result was verified using a virtual prototype of the suspension.