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| Dynamic characteristic analysis of open-loop system for the intelligent beams with interval parameters |
| WANG Min-juan; CHEN Jian-jun; WEI Yong-xiang; ZHANG Chao; MA Hong-bo |
| School of Electromechanical Engineering, Xidian University, Xi’an 710071 |
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Abstract Structures with piezoelectricity intelligent beam are taken as research objects in this paper. According to the method of interval analysis, the interval model of mass matrix and stiffness matrices with the interval variables for structural physical parameters and geometric dimensions is built. From the Rayleigh quotient of dynamic characteristic of structural vibration, and based on the interval algorithms, the computation expression of structural natural frequency of open-loop system is obtained. Via an example, the effects of the uncertainty of the structural interval parameters on the structural natural frequency were inspected, and the model constructed and the method presented in this paper are verified, by which it is verified that the interval coefficient method is of importance value in engineering in dealing with the dynamic characteristic of open-loop system of the intelligent beam.
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Received: 31 August 2010
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Corresponding Authors:
WANG Min-juan
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2012, Vol. 31 
