SENSOR MECHANICS OF DISTRIBUTED SHELL CONVOLVING SENSORS APPLIED TO FLEXIBLE RINGS

被引：57

作者：

TZOU, HS

ZHONG, JP

NATORI, M

机构：

[1] Department of Mechanical Engineering, University of Kentucky, Lexington, KY

[2] Conmec Inc., Bethlehem, PA

[3] Division of Spacecraft Engineering, Institute of Space and Astronautical Science, Kanagawa

来源：

JOURNAL OF VIBRATION AND ACOUSTICS-TRANSACTIONS OF THE ASME | 1993年 / 115卷 / 01期

关键词：

D O I：

10.1115/1.2930312

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

Observation spillover can introduce system instability to undamped distributed structural systems. This problem can be prevented via modal filtering using distributed piezoelectric modal sensors which are spatially shaped and convoluted such that they are only sensitive to specific modal mode (s). In this paper, detailed electro-mechanics-sensor mechanics-of spatially distributed piezoelectric shell convolving sensors are analyzed and results presented. It is observed that sensor sensitivity can be classified into two components: (1) the transverse modal sensitivity and (2) the membrane modal sensitivity in which the former is primarily contributed by bending strains and the later is by membrane strains. Design of spatially distributed cosine-shaped convolving sensors for ring structures is proposed and evaluated. Parametric studies suggest that the transverse sensitivity increases and the circumferential sensitivity remained constant when the ring becomes thicker. Both transverse and circumferential sensitivities increase when the piezoelectric layer becomes thicker or with higher piezoelectric constants.

引用

页码：40 / 46

页数：7

共 9 条

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