English Tuned Mass Dampers (TMD) Tuned mass dampers (TMDs) are a cost-effective and reliable solution for reducing vibrations in buildings, machinery and equipment. There are various concepts for tuned mass dampers: Passive systems Semi-active systems Active systems Passive tuned mass dampers are a proven means of reducing unwanted vibrations. They consist of a mass, springs and dampers. Tuned to the structure to be settled, they reduce resonance vibrations. Active and semi-active systems are always used when structural properties change or there is insufficient installation space for passive systems. Contact Gunnar Schmidt +49 (4281) 713 - 482 Gunnar.schmidt@de.lisega.com Success Stories Areas of application Pedestrian bridges, balconies, visitor galleries and ceilingsSkyscrapers, airport towers and other tall structuresStacks and chimneysPiping systems, machinery and plants Functional principle of passive tuned mass dampersFunctional principle of semi-active and active systemsProduct featuresMounting examples Areas of application Tuned mass dampers as effective vibration protection for all applications Undesired vibrations occur in almost all sectors and fields. Our engineers specialize in solving vibration problems and implementing the optimum tuned mass damper for every application. Pedestrian bridges, balconies, visitor galleries and ceilings Pedestrian-induced vibrations can be effectively controlled with passive tuned mass dampers. Type T-BR-V Vertically acting TMDs for pedestrian bridges Type T-BR-H Horizontally acting TMDs for pedestrian bridges Skyscrapers, airport towers and other tall structures Tall and slender buildings are susceptible to wind-induced vibrations. Tuned mass dampers allow a high degree of comfort in the building and maximize the service life. Passive, semi-active and active systems are all used in building and bridge construction. Type T-BU Pendulum for buildings Stacks and chimneys Steel chimneys in particular usually have a low degree of structural damping and are therefore prone to wind-induced vibrations. Using passive tuned mass dampers, the vibrations can be controlled effectively and the service life of the chimney can be increased. Type T-ST TMD for stacks Type T-ST (Detail view) Piping systems, machinery and plants Flow-induced vibrations in pipelines, as well as vibrations of components and machines are a well-known problem in plant and mechanical engineering. By using both passive and semi-active or active systems, these vibrations can be effectively reduced. Type T-PI TMD for Pipelines Pipe ADD* In cooperation with Wölfel Functional principle of passive tuned mass dampers Modern structures with slender, cantilevered shapes usually have a low degree of structural damping, making them susceptible to vibrational excitation by wind and traffic loads as well as pedestrian movement. Tuned mass dampers increase the structural damping of structures and thus reduce resonance vibrations. They are tuned to the structure’s natural frequency to be reduced. They consist of stiffness (pendulum or springs), damping elements and a moving mass. Magnification function A (ƞ) to explain the functional principle of passive tuned mass dampers Functional principle of semi-active and active systems Semi-active systems are characterized by the fact that the damping properties and the natural frequency of the tuned mass damper can be permanently adapted. An optimal effect is thus also achieved in buildings with variable properties. Active systems consist of an actuator with reaction mass and a control unit with a sensor. Structural vibrations are detected constantly in order to generate damping forces, which in turn reduce the vibrations of the structure. Transfer function to explain the operating principle of active tuned mass dampers Product features Innovative damping mechanisms, the optimum damper is used depending on the application: Friction dampers Eddy current dampers Viscoelastic dampers Integrated monitoring systems with real-time monitoring and web interface Manufacturing according to industrial standards with the highest quality requirements The right tuned mass damper for every application We offer the optimal solution for every application. Depending on the requirements, we choose one of our standard designs or develop a customized solution concept. From dynamic analysis during planning to on-site installation, you will be provided with all services relating to vibration dampers from a single source. Schematic representation of VICODA’s process flow Mounting examples PIPE SUPPORTS Constant hangers and constant supports Spring hangers and spring supports Dynamic components Pipe clamps, clamp bases, pipe connections Roller bearings, pipe saddles and cryogenic pipe supports Connection components Structural attachments, slide plates LICAD VIBRATION CONTROL Spring Elements and Spring Damper Elements Viscoelastic dampers Tuned Mass Dampers (TMD) References INDUSTRIES Conventional power plants Nuclear power plants Industry and petrochemicals LNG plants Solar plants SERVICES Application Engineering Field Service Additional Services Testing Services Test laboratory LIMALAB CONTACTS Europe & North Africa Subsahara-Africa Russia & CIS Asia Pacific India & Gulf South & Central America North America © LISEGA SE 2021 Terms of Service imprint Data protection Change cookie settings Privacy settings We use cookies on our website. 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