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Energy dissipation principle of friction damper
Published:2022-10-20 16:48:13 Browse: time
Friction damping uses the principle of tribology to dissipate the energy input into the structure due to vibration. Friction refers to the sliding friction resistance and energy loss caused by the interaction between two contact surfaces. The essence of friction is to convert mechanical energy into heat energy and follow the law of energy conservation. For example, when the car brakes, the friction force provided by the brake pad stops the inertia of the car and makes it stop moving forward
For the dry friction theory of objects, the classical Coulomb friction theory puts forward the following assumptions:
1) The total friction force is independent of the contact surface area
2) The total friction force is proportional to the normal force acting on the contact surface
3) If the relative sliding of two contact bodies is small, the total friction force is independent of the speed
From the above assumptions, it can be concluded that when an object is about to slide or slide, the friction force can be determined by the following formula: