An iterative updating method for damped structural systems using symmetric eigenstructure assignment

JOURNAL OF COMPUTATIONAL AND APPLIED MATHEMATICS

卷:256

Article

Yuan, Yongxin¹  Liu, Hao² 

[1] Jiangsu Univ Sci & Technol, Sch Math & Phys, Zhenjiang 212003, Peoples R China

[2] Nanjing Univ Aeronaut & Astronaut, Dept Math, Nanjing 210016, Jiangsu, Peoples R China

关键词: Model updating;    Iterative algorithm;    Eigenstructure assignment;    Partially prescribed spectral data;    Optimal approximation;   

DOI  :  10.1016/j.cam.2013.07.047

来源: Elsevier

【 摘 要 】

An iterative method for updating finite element models with measured modal results using a symmetric eigenstructure assignment technique is developed. By the method, the updated symmetric damping and stiffness matrices can be obtained within finite iteration steps in the absence of roundoff errors by choosing a special kind of initial matrices and the measured data are embedded in the updated model. The numerical results show that the proposed method is reliable and attractive. (C) 2013 Elsevier B.V. All rights reserved.

【 授权许可】

Free