Experimental modal analysis of straight and curved slender beams by piezoelectric transducers

被引：25

作者：

Piana, Gianfranco ^{[1
]}

Lofrano, Egidio ^{[1
]}

Carpinteri, Alberto ^{[2
]}

Paolone, Achille ^{[1
]}

Ruta, Giuseppe ^{[1
]}

机构：

[1] Univ Roma La Sapienza, Dipartimento Ingn Strutturale & Geotecn, Rome, Italy

[2] Politecn Torino, Dipartimento Ingn Strutturale Edile & Geotecn, Turin, Italy

来源：

MECCANICA | 2016年 / 51卷 / 11期

关键词：

Experimental modal analysis; Piezoelectric sensors; Accelerometers; 1-D structures; NATURAL FREQUENCIES; AXIAL LOADS; DAMAGE;

D O I：

10.1007/s11012-016-0487-y

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

We present the use of piezoelectric disk buzzers, usual in stringed musical instruments to acquire sound as a voltage signal, for experimental modal analysis. These transducers helped in extracting natural frequencies and mode shapes of an aluminium beam and a steel arch in the laboratory. The results are compared with theoretical predictions and experimental values obtained by accelerometers and a laser displacement transducer. High accuracy, small dimensions, low weight, easy usage, and low cost, make piezoelectric pickups an attractive tool for the experimental modal analysis of engineering structures.

引用

页码：2797 / 2811

页数：15

共 29 条

[1]

Allemang R.J., 1982, P 1 IMAC ORL FLOR

[2]

[Anonymous], 2010, NUMERICAL METHOD ENG

[3]

[Anonymous], 1997, THEORETICAL EXPT MOD

[4]

Bazant Z. P., 1991, Stability of structures: Elastic, Inelastic, Fracture and Damage Theories

[5]

Bernasconi D.O., 1989, 7th Internation Modal Analysis Conference, P1453

[6]

Bernasconi O., 1989, Journal of Modal Analysis, V4, P68

[7]

Blevins R.D., 1979, Formulas for natural frequency and mode shape

[8] NATURAL FREQUENCIES OF BEAMS UNDER COMPRESSIVE AXIAL LOADS [J].

BOKAIAN, A .

JOURNAL OF SOUND AND VIBRATION, 1988, 126 (01) :49-65

[9] NATURAL FREQUENCIES OF BEAMS UNDER TENSILE AXIAL LOADS [J].

BOKAIAN, A .

JOURNAL OF SOUND AND VIBRATION, 1990, 142 (03) :481-498

[10]

Clough R., 1975, Dynamics of Structures

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