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The suspension on a FSAE car is two spring/mass/damper systems in series (see Figure 1). The first consists of the suspension spring, body/chassis mass (sprung mass) and the damper.
The spring rate is the rate of the spring and damper measured at the damper. The wheel rate is the rate the tyre is going to see and this is dictated by the motion ratio and spring rate. Let us know discuss the mechanics of how to calculate the wheel rate.
The main function of the dampers is to control the transient behavior of the sprung and unsprung masses of the vehicle. This is accomplished by damping the energy stored in the springs from suspension movement. The damper generates a force defined by the characteristic curve and the velocity of the damper.
5.6 Shock absorbers (suspension dampers) 347 5.6.1 Types offitting 348 5.6.2 Twin-tubeshock absorbers, non-pressurized 349 5.6.3 Twin-tubeshock absorbers, pressurized 355 5.6.4 Monotube dampers, pressurized 357 5.6.5 Monotube dampers, non-pressurized 364 5.6.6 Damping diagrams and characteristics 366 5.6.7 Damper attachments 367
Explanation of spring suspension and how dampers work to keep a smooth and stable ride in a car. Complete with diagrams of hydraulic suspension.
Download Free PDF. DESIGN AND ANALYSIS OF DAMPER SPRING AND ITS STRUCTURAL COMPONENTS. IAEME Publication. The main functions of automobile suspension systems are to isolate the structure and the occupants from shocks and vibrations generated by the road surface.
Now, you can create baseline spring rates for your car in ride motion. Next month, single wheel bump springs and ride damping will be explained; eventually over the series, spring rates and damping in ride, roll, and pitch will be covered.
