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Damage Detection in Grid Structures Using Limited Modal Test Data
Joint Authors
Ding, Bei-dou
Feng, Da-shuai
Lv, Heng-lin
Li, Xian
Source
Mathematical Problems in Engineering
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-06-01
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
The detection of potentially damaged elements in grid structures is a challenging topic.
By using limited measured test data, damage detection for grid structures is developed by the modal strain energy (MSE) method.
Two critical problems are considered in this paper in developing the MSE method to detect potential damage to the grid structure by using limited modal test data.
First, an updated mode shape expansion method based on the modal assurance criterion is adopted to ensure that the modal shape obtained from the reference baseline model is reliable and has explicit physical meanings.
Second, after identifying the location of the element damage by the element MSE method with expanded mode shapes, multivariable parameters denoting element damage severity are simultaneously determined.
These parameters are included in the column vector and matched with the corresponding element stiffness matrix while the error tolerance value of the Frobenius norm of the column vector is undercontrolled.
Finally, a three-dimension numerical model of the grid structure is used to represent different damage cases and to demonstrate the effectiveness of the present method.
The application of the three-dimension physical model to a full-scale grid structure is also verified.
Analysis results demonstrate that the presented damage detection method effectively locates and quantifies single- and multimember damage in grid structures and can be applied in engineering practice.
American Psychological Association (APA)
Ding, Bei-dou& Feng, Da-shuai& Lv, Heng-lin& Li, Xian. 2017. Damage Detection in Grid Structures Using Limited Modal Test Data. Mathematical Problems in Engineering،Vol. 2017, no. 2017, pp.1-11.
https://search.emarefa.net/detail/BIM-1189423
Modern Language Association (MLA)
Ding, Bei-dou…[et al.]. Damage Detection in Grid Structures Using Limited Modal Test Data. Mathematical Problems in Engineering No. 2017 (2017), pp.1-11.
https://search.emarefa.net/detail/BIM-1189423
American Medical Association (AMA)
Ding, Bei-dou& Feng, Da-shuai& Lv, Heng-lin& Li, Xian. Damage Detection in Grid Structures Using Limited Modal Test Data. Mathematical Problems in Engineering. 2017. Vol. 2017, no. 2017, pp.1-11.
https://search.emarefa.net/detail/BIM-1189423
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1189423