## Abstract

The geometric-mean drive-point admittance (or 'mobility') of a complex structure is given by the admittance of the corresponding infinite structure (i.e., the 'characteristic admittance,' Y(c)). The frequency response of an infinite plate, for example, coincides with the geometric-mean response of a finite one. Eugen Skudrzyk's 'mean-value theorem' was derived and experimentally verified without consideration of fluid loading. This paper shows that Skudrzyk's method can be applied to fluid-loaded plates well below the coincidence frequency. Skudrzyk's general mathematical expression allows simplified modifications that account for fluid loading and result in an approximate fluid-loaded characteristic admittance that differs only by a small multiplicative factor (< 2 dB) from a correct analytical expression derived by Crighton.

Original language | English (US) |
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Pages (from-to) | 342-347 |

Number of pages | 6 |

Journal | Journal of the Acoustical Society of America |

Volume | 102 |

Issue number | 1 |

DOIs | |

State | Published - Jul 1997 |

## All Science Journal Classification (ASJC) codes

- Arts and Humanities (miscellaneous)
- Acoustics and Ultrasonics