Abstract
A general expression for the driving-point impedance of an infinite thin plate with an attached subsystem some distance from the driving point is derived. The analysis is based upon the receptance method and the reciprocal theorem. As an example, an infinite plate with an attached rigid circular cylinder is examined. Results are compared with experiments on a finite plate and good agreement in the frequency average sense is obtained. It is shown from the results that the effects of the attached mass and the rotational inertia on the driving-point impedance are mainly in the region of the near field. The effect of the shape of the contact area was studied in a second set of experiments. An equivalent circle is proposed to represent a square contact area.
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