A Model ldentification Method of Vibrating Structures from lncomplete Modal lnformation

Zheng Xiaoping; Yao Zhenhan; Qu Shisheng

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Article Navigation > Applied Mathematics and Mechanics > 1995 > 16(10): 903-908

Zheng Xiaoping, Yao Zhenhan, Qu Shisheng. A Model ldentification Method of Vibrating Structures from lncomplete Modal lnformation[J]. Applied Mathematics and Mechanics, 1995, 16(10): 903-908.

Citation:

Zheng Xiaoping, Yao Zhenhan, Qu Shisheng. A Model ldentification Method of Vibrating Structures from lncomplete Modal lnformation[J]. Applied Mathematics and Mechanics, 1995, 16(10): 903-908.

Citation:

Zheng Xiaoping, Yao Zhenhan, Qu Shisheng. A Model ldentification Method of Vibrating Structures from lncomplete Modal lnformation[J]. Applied Mathematics and Mechanics, 1995, 16(10): 903-908.

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A Model ldentification Method of Vibrating Structures from lncomplete Modal lnformation

Dept. of Engineering Mechanics, Qinghua University, Beijing 100084, P. R. China

Received Date: 1994-12-28
Publish Date: 1995-10-15

Abstract

Abstract

The accurate mathematical models for complicated structures are very difficult to construct.The work presented here provides an identification method for estimating the mass.damping,and stiffness matrices of linear dynamical systems from incomplete experimental data.The mass,stiffness and damping matrices are assumed to be real,symmetric,and positive definite The partial set of experimental complex eigenvalues and corresponding eigenvectors are given.In the proposed method the least squares algorithm is combined with the iteration technique to determine systems identified matrices and corresponding design parameters.Seeveral illustative examples,are presented to demonstrate the reliability of the proposed method.It is emphasized that the mass,damping and stiffness matrices can be identified simultaneously.
- vibrating structures,
- model identification,
- incomplete experiemntal modal data,
- the least squares method,
- iteration technique

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References(6)

References

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