What are the types of shock absorbers?

[DeBlakely]

Shock absorbers can be categorized from a material perspective into two main types: hydraulic and pneumatic, with another type being variable damping shock absorbers. Structurally, they are divided into monotube and twin-tube types. Function of shock absorbers: Shock absorbers are used to suppress the oscillation of springs after absorbing shocks and the impacts from the road surface. They are widely used in automobiles to accelerate the attenuation of vibrations in the frame and body, thereby improving the ride comfort of the vehicle. When driving over uneven surfaces, although the shock-absorbing springs can filter out road vibrations, the springs themselves still undergo reciprocating motion. The shock absorber is designed to suppress this spring oscillation. Replacement of shock absorbers: Each vehicle has four shock absorbers: front left, front right, rear left, and rear right. If shock absorbers need to be replaced, it is best to replace two at a time. If there is an issue with either the front or rear shock absorbers, both the front or rear pair should be replaced simultaneously to avoid uneven balance and force distribution on the vehicle, which could lead to different stress levels on the shock absorbers and subsequent problems.