✦ LIBER ✦

ESTIMATING THE VIBRATIONAL ENERGY CHARACTERISTICS OF AN ELASTIC STRUCTURE VIA THE INPUT IMPEDANCE AND MOBILITY

✍ Scribed by Yu I. Bobrovnitskii

Publisher: Elsevier Science
Year: 1998
Tongue: English
Weight: 387 KB
Volume: 217
Category: Article
ISSN: 0022-460X
DOI: 10.1006/jsvi.1998.1806

No coin nor oath required. For personal study only.

✦ Synopsis

Several equations are proposed which relate the time-average energy of a forced vibrating linear structure to the structure input impedance and mobility. When the structure is driven at one point, the equations allow one to obtain the kinetic and potential energy, loss factor and other energy characteristics by the most economic way: without measuring or computing the response all over the structure and using only the data measured at the driving point. Computer simulation examples with typical structures show that the equations provide reliable estimates in the range of low and middle frequencies.

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An e$cient method for estimating the vibration energy characteristics (such as the potential energy, kinetic energy, loss factor, etc.) of a forced vibrating structure proposed earlier (Journal of Sound and <ibration 1998, 217, 351}386) [1] is improved and validated numerically and experimentally. T