SPATIAL DOMAIN MODAL-ANALYSIS OF LIGHTLY-DAMPED STRUCTURES USING LASER VELOCIMETERS

被引：4

作者：

ARRUDA, JRF

机构：

[1] Departamento de Mecanica Computacional, Universidade Estadual de Campinas, Campinas, SP, 13081

来源：

JOURNAL OF VIBRATION AND ACOUSTICS-TRANSACTIONS OF THE ASME | 1993年 / 115卷 / 03期

关键词：

D O I：

10.1115/1.2930337

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

Traditional modal identification techniques do not take advantage of the high spatial density of scanning Laser Doppler Velocimeter (LDV) measurements. In this paper, a spatial modal parameter estimation technique, specially adapted for use with LDV measurements, is presented. It is based on a real-mode modal filtering concept and, therefore, is applicable to structures with low damping. From the estimated mode shape surfaces, curve-fitted with two-dimensional Fourier series, angular displacements are calculated. A rectangular plate example illustrates the proposed techniques with both numerically simulated and experimental results.

引用

页码：225 / 231

页数：7

共 13 条

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