Common questions

How do liquid mass dampers work?


How do liquid mass dampers work?

A Liquid Mass Damper is used to add damping to an oscillating, slender structure. This makes these structure more vulnerable when it comes to natural influences such as water, wind and even earthquakes. To prevent or reduces the oscillation of a structure, a Liquid Mass Damper can be added.

How effective is a tuned mass damper?

Tuned Mass Damper (TMD) has been found to be most effective for controlling the structural responses for harmonic and wind excitations. It is observed that TMD is effective in controlling earthquake response of lightly damped structures, both for actual recorded and artificially generated earthquake ground motions.

What is a tuned liquid damper?

Tuned liquid damper (TLD) is a device which absorbs energy of structural vibration through sloshing of fluid when sloshing frequency is tuned to the structural frequency. TLD is widely used to control wind-induced vibrations in civil structures.

Which building has a tuned mass damper at the top?

The Hancock Tower in Boston — A tuned mass damper was added to it after it was built making it the first building to use a tuned mass damper.

How expensive are tuned mass dampers?

Cost: $4 million Weight: 730 tons Number of steel plates: 41 Cable thickness: 3 1/2 in.

What are tuned mass dampers used for?

A tuned mass damper (TMD) is a device mounted in large structures, such as tall buildings and long bridges, to reduce the amplitude of vibrations caused by environmental forces or otherwise.

What do tuned mass dampers do?

A tuned mass damper (TMD) is a device consisting of a mass, a spring, and a damper that is attached to a structure in order to reduce the dynamic response of the structure.

What does a tuned mass damper do on a stack?

A Tuned Mass Damper (TMD) is device that is added to the top portion of the stack that increases the damping of the stack, which will suppress wind induced vibration. Meca has partnerships with companies that design Tuned Mass Dampers (TMD) and Tuned Liquid Dampers (TLD).

What is a tuned liquid column damper ( tlcd )?

A Tuned Liquid Damper (TLD) is a type of TMD where the mass is replaced by a liquid (usually water). Tuned Liquid Column Dampers (TLCDs) are a special type of TLDs relying on the motion of a column of liquid in a U-tube like container to counteract the forces acting on the structure.

Which is an example of a tuned liquid damper?

Such systems have been implemented, for example, in the John Hancock tower in Boston and the Citicorp Building in New York City. A Tuned Liquid Damper (TLD) is a type of TMD where the mass is replaced by a liquid (usually water).

Can a tuned liquid damper reduce vortex shedding?

If you are unsure that a tuned liquid damper is the right option to reduce the effects of vortex shedding (wind induced vibrations) on your stack, then click on our “Vortex Shedding Solution Wizard” to receive an email about our general recommendation based on your parameters entered. Is this stack near another tall structure? * No Yes