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News

Upcoming Events

03/07/2019

Vibro/Dynamics is pleased to be exhibiting at several tradeshows in 2019.  Please come visit us! Our next tradeshow events are SeaAirSpace and Fabtech Mexico. . SeaAirSpace May 6-8 If the product is intended to enhance and advance the quality of America’s Navy, Marine Corps, Coast Guard or U.S.-flag Merchant Marine, then it is on display at the Navy League’s Sea-Air-Space Exposition! Over 300 exciting and interactive exhibits showcasing the latest in maritime, defense and energy technology. The combined event continues to be the primary gathering for leading metal manufacturers in Mexico and will bring together 575 exhibitors and cover more than 140,000 net square feet of show floor. Over 13,000 attendees from Mexico and South America will converge on the Cintermex to find solutions, network, learn and experience first-hand the latest innovations in the metal forming, fabricating, welding and finishing industries. SeaAirSpace website   Fabtech Mexico May 7-9 The combined event continues to be the primary gathering for leading metal manufacturers in Mexico and will bring together 575 exhibitors and cover more than 140,000 net square feet of show floor. Over 13,000 attendees from Mexico and South America will converge on the Cintermex to find solutions, network, learn and experience first-hand the latest innovations in the metal forming, fabricating, welding and finishing industries. Fabtech Mexico website   2019 Schedule   When Show Where Booth Feb. 13-15 Naval Conference and Exposition (WEST) San Diego, CA 808 May 6-8 SeaAirSpace National Harbor, MD 1148 May 7-9 FABTECH Mexico Monterrey, Mexico 345 May 7-9 China International Marine Tradeshow Haikou City, Japan May 21-23 Forging Industry Association (FIA) Forge Fair Cleveland, OH 401 July 17-20 Confederation of Chinese Metalforming Industry (CCMI) Shanghai, PRC Sept. 22-25 Railway Interchange Minneapolis, MN Oct. 1-3 Die Cast Expo Indianapolis, IN Oct. 14-16 Association of US Army (AUSA) Washington DC 4111 Nov. 3-7 Shock & Vibration Exchange (SAVE) Dallas , TX Nov. 11-14 FabTech Atlanta, GA 46347
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Tuned Mass Dampers Using Wire Rope Isolators

12/21/2018

Tall, steel, chimney stacks installed in windy regions are prone to violent vibrations that could lead to stack failure. The source of this vibration is due to the phenomenon called vortex shedding. Controlling the amplitude of vortex-induced vibrations is crucial to avoid catastrophic failure of the chimney and increase its lifespan. One widely accepted design for doing so is the use of hydraulic dampers installed between the top of the chimney and a steel ring. While this is an effective design at limiting a chimney’s vibration, it often requires maintenance, and its performance could vary based on temperature. A less known way of controlling chimney vibration is through the use of wire rope isolators (WRIs). When tuned to the proper stiffness and damping, WRIs can be very effective at controlling the chimney’s vibration. In addition, WRI-tuned mass dampers (TMDs) offer further advantages such as their maintenance free construction, temperature-independent performance, and extremely long lifetime. Our purpose here is to present a case study where the Socitec Group provided a WRIbased TMD for a chimney stack. The simulation results show that just like hydraulic dampers, WRI TMDs can be very effective at controlling a chimney’s vibration.
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