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  2. Tuned mass damper - Wikipedia

    en.wikipedia.org/wiki/Tuned_mass_damper

    The graph shows the effect of a tuned mass damper on a simple spring–mass–damper system, excited by vibrations with an amplitude of one unit of force applied to the main mass, m 1. An important measure of performance is the ratio of the force on the motor mounts to the force vibrating the motor, ⁠ F 0 / F 1 ⁠ .

  3. Seismic vibration control - Wikipedia

    en.wikipedia.org/wiki/Seismic_vibration_control

    After the seismic waves enter a superstructure, there is a number of ways to control them in order to soothe their damaging effect and improve the building's seismic performance, for instance: to dissipate the wave energy inside a superstructure with properly engineered dampers; to disperse the wave energy between a wider range of frequencies;

  4. Earthquake engineering - Wikipedia

    en.wikipedia.org/wiki/Earthquake_engineering

    A hysteretic damper is intended to provide better and more reliable seismic performance than that of a conventional structure by increasing the dissipation of seismic input energy. [26] There are five major groups of hysteretic dampers used for the purpose, namely:

  5. Seismic base isolation - Wikipedia

    en.wikipedia.org/wiki/Seismic_base_isolation

    Seismic base isolation, also known as base isolation, [3] or base isolation system, [4] is one of the most popular means of protecting a structure against earthquake forces. [5] It is a collection of structural elements which should substantially decouple a superstructure from its substructure that is in turn resting on the shaking ground, thus ...

  6. Vibration isolation - Wikipedia

    en.wikipedia.org/wiki/Vibration_isolation

    Base isolators for seismic isolation of buildings, bridges, etc. Base isolators made of layers of neoprene and steel with a low horizontal stiffness are used to lower the natural frequency of the building. Some other base isolators are designed to slide, preventing the transfer of energy from the ground to the building. Tuned mass dampers

  7. Mechanical resonance - Wikipedia

    en.wikipedia.org/wiki/Mechanical_resonance

    The Taipei 101 building for instance relies on a 660-ton pendulum—a tuned mass damper—to modify the response at resonance. The structure is also designed to resonate at a frequency which does not typically occur. Buildings in seismic zones are often constructed to take into account the oscillating frequencies of expected ground motion.

  8. Seismic retrofit - Wikipedia

    en.wikipedia.org/wiki/Seismic_retrofit

    Seismic modification will either tie the two building components rigidly together so that they behave as a single mass or it will employ dampers to expend the energy from relative motion, with appropriate allowance for this motion, such as increased spacing and sliding bridges between sections.

  9. Stockbridge damper - Wikipedia

    en.wikipedia.org/wiki/Stockbridge_damper

    A Stockbridge damper is a tuned mass damper used to suppress wind-induced vibrations on slender structures such as overhead power lines, [1] long cantilevered signs [2] and cable-stayed bridges. The dumbbell-shaped device consists of two masses at the ends of a short length of cable or flexible rod, which is clamped at its middle to the main ...