Title:
MODEL ORDERING METHOD FOR MODAL IDENTIFICATION OF ENGINEERING STRUCTURE
Document Type and Number:
WIPO Patent Application WO/2018/188432
Kind Code:
A1
Abstract:
The present invention relates to the technical field of monitoring data analysis of engineering structures, and provides a model ordering method for modal identification of an engineering structure. The method comprises: preliminarily calculating each order frequency of the structure by means of a feature implementation algorithm; then decomposing the modal response corresponding to each order frequency; calculating the root-mean-square value of the modal response; and finally summing the root-mean-square values of degrees of freedom in the modal response to obtain a modal response contribution index (MRCI), generating an order and MRCI relation diagram, and finding the order corresponding to the maximum ratio of MRCI values of two adjacent orders, i.e., the exact order for the model. The order of the model can be used as a truncation order of a singular value matrix in the feature implementation algorithm, and can be used for accurately identifying modal parameters of the structure.
Inventors:
QU CHUNXU (CN)
YI TINGHUA (CN)
LI HONGNAN (CN)
YI TINGHUA (CN)
LI HONGNAN (CN)
Application Number:
PCT/CN2018/078134
Publication Date:
October 18, 2018
Filing Date:
March 06, 2018
Export Citation:
Assignee:
UNIV DALIAN TECH (CN)
International Classes:
G06F17/16
Foreign References:
| CN107133195A | 2017-09-05 | |||
| CN101964050A | 2011-02-02 | |||
| CN102520071A | 2012-06-27 | |||
| CN105205461A | 2015-12-30 | |||
| CN101950375A | 2011-01-19 | |||
| US20060025973A1 | 2006-02-02 |
Download PDF: