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A Stockbridge damper is a tuned mass damper used to suppress wind-induced vibrations on slender structures such as overhead power lines, long cantilevered signs 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 cable. The ...
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 .
Stockbridge damper bolted to line close to the point of attachment to the tower. It prevents mechanical vibration building up in the line. Stockbridge dampers are added to the transmission lines a meter or two from the tower.
There are many types of physical devices that can act as inertia dampers: Stockbridge damper - absorbs resonant wave motions in wire and support cables, seen on high voltage power lines. Shock absorber - motion redirected as heating of viscous oil forced through a restrictive passage
Mass-spring-damper model. The mass-spring-damper model consists of discrete mass nodes distributed throughout an object and interconnected via a network of springs and dampers. This model is well-suited for modelling object with complex material properties such as nonlinearity and viscoelasticity . Packages such as MATLAB may be used to run ...
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A tuned mass damper can be used to mitigate vortex shedding in stacks and chimneys. A Stockbridge damper is used to mitigate aeolian vibrations caused by vortex shedding on overhead power lines. See also. Aeroelastic flutter - vibration-induced vortices - by way of contrast; Vortex; Vortex-induced vibration; Von Kármán vortex street; References
In classical mechanics, a harmonic oscillator is a system that, when displaced from its equilibrium position, experiences a restoring force F proportional to the displacement x : where k is a positive constant . If F is the only force acting on the system, the system is called a simple harmonic oscillator, and it undergoes simple harmonic ...
Dampers A Stockbridge damper. Because power lines can suffer from aeroelastic flutter driven by wind, Stockbridge dampers are often attached to the lines to reduce the vibrations. Compact transmission lines
A centrifugal pendulum absorber is a type of tuned mass damper. It reduces the amplitude of a torsional vibration in drive trains that use a combustion engine.