VISCOELASTIC DAMPERS AND SNUBBERS

Viscoelastic Shock Absorber Family

Specially designed as per application to save resources, silicon fluid (SF) shock absorbers combine the energy absorption and return spring functions in a single unit – without the need for an additional gas or mechanical spring stroke return mechanism. ARC Visco-Elastic dampers take advantage of the unique compression and shear characteristics of specially formulated silicone elastomers. Viscoelastic (VE) dampers have been successfully incorporated in a number of tall buildings as a viable energy dissipating system to suppress wind- and earthquake-induced motion of building structures. This type of damper dissipates the building's mechanical energy by converting it into heat. Several factors such as ambient temperature and the loading frequency will affect the performance and hence the effectiveness of the damper system.

Features and Benefits

MODEL En Stroke Reaction Force Reaction Force
kJ mm Min kN Max kN
SMALL
ARC5A 25 105 167 310
ARC5B 50 120 310 540
ARC5C 75 140 400 700
ARC5D 100 160 470 820
ARC5E 150 180 640 1100
MEDIUM
ARCXL6-150 6 150 25 50
ARCXL12-150 12 150 66 100
ARCXL12-200 12 200 42 78
ARCXL25-200 25 200 95 150
ARCXL25-270 25 270 66 112
ARCXL50-275 50 275 118 230
ARCXL50-400 50 400 75 150
ARCXL100-400 100 400 175 320
ARCXL100-600 100 600 85 230
ARCXL150-800 150 800 80 250
LARGE
ARCLR-100 100 400 190 310
ARCLR-150 150 500 200 380
ARCLR-220S 220 400 380 685
ARCLR-250 250 650 270 490
ARCLR-400 400 850 330 600
ARCLR-600 600 1050 370 740
ARCLR-800 800 1200 430 860
ARCLR-1000 1000 1300 500 1000

VE dampers have been able to increase the overall damping of the structure significantly, hence improving the overall performance of dynamically sensitive structures. In seismic applications, the VE dampers can be incorporated either into new construction or as a viable candidate for the retrofit of existing buildings which adds to the versatility of VE dampers. The repetitive motion like earthquake waves causes fatigue and reduction of the performance of the structure. The energy released can cause high amount of damage to all components of the structure. Thus it is the need to reduce vibrations or maintaining the performance of the structure for life safety and economic loss. The current trend toward buildings of ever increasing heights and the use of lightweight, high strength materials, and advanced construction techniques have led to increasingly flexible and lightly damped structures. Understandably, these structures are very sensitive to environmental excitations such as wind, ocean waves and earthquakes. This causes unwanted vibrations inducing possible structural failure, occupant discomfort, and malfunction of equipment. Hence it has become important to search for practical and effective devices for suppression of these vibrations. These dampers act like the hydraulic shock absorbers in cars. Much of the sudden jerks are absorbed in the hydraulic fluids and only little is transmitted above to the chassis of the car. When seismic energy is transmitted through them, dampers absorb part of it, and thus damp the motion of the building.



For more queries contact info@arcdampers.com