Abstract #1385
Multi physics modeling of eddy current vibration damping in MRI systems
Kishore Venkata Mogatadakala 1 , Ming Yao 1 , Sampath Telikicherla Kandala 1 , Longzhi Jiang 1 , and Timothy Havens 1
1
Magnet and Gradient engineering, GE Health
care, Florence, SC, United States
Vibration induced eddy currents generate magnetic field
disturbance in MRI systems and degrade image quality
(IQ). In this work, a multi-physics based finite element
approach is presented to simulate mechanical vibration
and eddy currents. Both simulation and test results
indicate that the induced eddy currents play a
significant role in attenuating the vibration response
and corresponding field disturbance. In order to
demonstrate the applicability of the developed technique
to a complicated mechanical resonance mode, simulation
was performed on a locally deforming hollow cylinder and
the results are presented with and without
electromagnetic damping.
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