Principle of Tuned Mass Damper(TMD) Technology

A tuned mass damper(TMD), also known as a harmonic absorber, is a vibration control device installed inside the structures to reduce wind induced vibrations. Their application can prevent discomfort of inhabitants and damage to the building, or outright structural failure.

Two representation of structures with same weight, stiffness, and damping is shown in the video. If the outside force induces vibration, it shows almost identical horizontal movement. Due to the low damping, the vibration’s duration is quiet long as well.
Now if we activate TMD, the structure on the right quickly dampens the vibration. In essence, the vibration on the structure activates the TMD, and the absorbs the vibration energy from the structure. On the actual scale, the weight of the TMD is about 1/300 of the weight of the structure.

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Видео Principle of Tuned Mass Damper(TMD) Technology канала (주)티이솔루션, TESolution