Finally figured out this time, the working principle of a car shock absorber

In the suspension system, vibration is caused by the impact of the elastic element. In order to improve the ride comfort of the car, a shock absorber is installed in parallel with the elastic element in the suspension. The working principle of the shock absorber is that when relative movement occurs between the frame (or body) and the axle, the piston in the shock absorber moves up and down, and the oil in the shock absorber cavity repeatedly passes from one cavity through The pores flow into another cavity. At this time, the friction between the hole wall and the oil and the internal friction between the oil molecules form a damping force on the vibration, so that the car's vibration energy is converted into oil heat energy, and then absorbed by the shock absorber and emitted to the atmosphere.

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