The effect of cubic damping on a base excited isolator: an experimental study for harmonic excitation
作者： Timothy P Waters , Neil S Ferguson , Nuttarut Panananda
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摘要: An experimental study has been conducted to validate theoretical solutions for the response of a base excited single degree-of-freedom isolation system possessing pure cubic damping. The damping characteristic was implemented using an electromagnetic shaker with simple non-linear velocity feedback control. rig and practical implementation active are described. excitation harmonic at set discrete frequencies constant displacement amplitude. Consistent predictions, performance high is shown be worse than either undamped or linear viscously damped transmissibility tending unity. This contrary case force reported in literature where offers improved performance. physical causes distinct behaviours consequences isolator design discussed
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