Fargo 4-R vibration dampers effectively prevent fatigue damage to conductor and static wires caused by wind-induced aeolian vibration.
The 4-R concept improves on the design of the basic Stockbridge damper, significantly increasing the efficiency of converting wind-induced energy into heat. The improved design employs unequal weights on messengers of unequal length. This configuration doubles the number of resonant peaks from two generated by the old-style Stockbridge damper to four in the improved Fargo 4-R. These additional resonant peaks create an envelope of dynamic response that protects the conductor through the entire range of dangerous vibration frequencies.
To assure maximum performance, Fargo utilizes a sophisticated computer simulation whose development has been verified by decades of testing and field measurements. This computer model identifies the optimum damper placement on the span.
Maximum Protection From Wind Induced Conductor Bending Strain
The four-resonant peaks include two separate cantilever response modes and two separate rotational response modes of the weight and messenger cable. These peaks also provide maximum energy dissipation to reduce strain over the entire spectrum of dangerous wind velocities
Comprehensive Application Program For Optimum Performance
Provides precise selection and placement through our proprietary computer simulation