Nonlinear dynamic analysis of laminated plates/shells with piezoelectric sensors and actuators

1998 ◽  
Author(s):  
S. S. Gupta ◽  
B. P. Patel ◽  
M. Ganapathi ◽  
Mangalanathan Umapathy ◽  
S. Y. Bhave
Keyword(s):  
Dynamic Analysis ◽  
Nonlinear Dynamic ◽  
Nonlinear Dynamic Analysis ◽  
Laminated Plates ◽  
Piezoelectric Sensors ◽  
Sensors And Actuators ◽  
Piezoelectric Sensors And Actuators

Dynamics of Structures with Piezoelectric Sensors and Actuators for Structural Health Monitoring

2007 ◽  
Vol 347 ◽  
pp. 493-498 ◽  
Author(s):  
Dan Mateescu ◽  
Yong Han ◽  
Arun Misra
Keyword(s):  
Dynamic Analysis ◽  
Crack Detection ◽  
Piezoelectric Sensors ◽  
Element Formulation ◽  
Sensors And Actuators ◽  
Cracked Plates ◽  
Piezoelectric Sensors And Actuators ◽  
Differential Voltage ◽  
Thin Structure ◽  
The Time Domain

The dynamic analysis of structures with piezoelectric sensors and actuators is used in this paper to establish a method for crack detection in aerospace structures. Piezoelectric strips used as sensors and actuators are bonded on both sides of a thin structure which executes flexural oscillations. The differential voltage outputs of the piezoelectric sensors are used to detect the presence of cracks in the structure. The structural analysis uses a finite element formulation for the piezoelectric strips coupled with the structure and a nonlinear model for the cracks. This paper presents first the results of the dynamic analysis in the frequency domain of healthy and cracked plates undergoing forced flexural vibrations generated by a pair of piezoelectric actuators submitted to an oscillatory voltage excitation. The peaks in the differential voltage output obtained in the case of a cracked plate at several frequencies during the frequency sweep were found to be indicative measures for the presence of a crack in the structure. The results of the dynamic analysis in the time domain have also shown that this method has a good sensitivity in detecting cracks in the structures.

Modeling and nonlinear dynamic analysis of cable-supported bridge with inclined main cables

2018 ◽  
Vol 156 ◽  
pp. 351-362 ◽  
Author(s):  
Yi Hui ◽  
Hou Jun Kang ◽  
Siu Seong Law ◽  
Zheng Qing Chen
Keyword(s):  
Dynamic Analysis ◽  
Nonlinear Dynamic ◽  
Nonlinear Dynamic Analysis ◽  
Main Cables
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