SIMPLE-MODELS OF ENERGY-FLOW IN VIBRATING MEMBRANES

被引：108

作者：

BOUTHIER, OM

BERNHARD, RJ

机构：

[1] Ray W. Herrick Laboratories, School of Mechanical Engineering, Purdue University, West Lafayette

来源：

JOURNAL OF SOUND AND VIBRATION | 1995年 / 182卷 / 01期

基金：

美国国家航空航天局;

关键词：

D O I：

10.1006/jsvi.1995.0186

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

A simplified model of the energy distribution and energy flow in membranes is derived using a loss factor damping model, an energy balance and a simplified energy transmission relationship. The energy transmission relationship is derived by smoothing a generalized plane wave representation of the energy density and intensity in the membrane. For smoothed conditions, the intensity is proportional to the spatial derivatives of the energy density. The resulting energy model is a second order differential equation which predicts the smoothed energy distribution and intensity in a membrane. The capabilities of the model are illustrated for four cases of broadband excitation of a point excited membrane.

引用

页码：129 / 147

页数：19

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