22.14.
Mechanics of an Independent Suspension System
It is convenient to consider the action of different types of forces between wheel and ground separately. Then the final forces on the limbs can be calculated by superimposing the forces due to each action. The independent suspension shown in Fig. 22.70 is under the action of vertical force R only.
Fig. 22.70. Independent suspension under the action of vehicle force.
The stub axle and wheel assembly are in equilibrium under R and the forces acting on the pivots A and C. There are no transverse forces acting on link AB. Therefore, the force acting on pivot A must be along AB so that its line of action intersects with that of R at the point O through
The action of horizontal force F is shown in Fig. 22.71. In this case also, as before, the line of action ofF and that of the force at pivot A intersect at O giving the line of action of the force at pivot C as OC that is inclined to the horizontal at an angle 8. Let V be the force acting on pivot C and p (compressive), q (tensile) and s be the force on the link AB, CD and the spring respectively.
Fig. 22.71. Independent suspension under the action of horizontal force.
