Mass-Stiffness Combined Perturbation Method for Mode Shape Monitoring of Bridge Structures

Joint Authors

Sun, Limin
Lozano-Galant, Jose Antonio
Xia, Ye
Zhang, Liye

Source

Shock and Vibration

Issue

Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-14, 14 p.

Publisher

Hindawi Publishing Corporation

Publication Date

2019-11-06

Country of Publication

Egypt

No. of Pages

14

Main Subjects

Civil Engineering

Abstract EN

Identification of the mode shapes through monitoring is one of the key problems in damage diagnosis based on modal parameters especially for damaged structures.

In order to obtain mode shapes of damaged structures easily and accurately, the mass-stiffness combined perturbation (MSCP) method is proposed in this paper.

To do so, the relationship between the stiffness perturbation mode shapes of damaged and intact structures is firstly derived and established.

Then, the principle of similar frequency is applied to optimize the objective function of the most suitable mass perturbation model.

Both numerical analyses and experimental tests on simple and complex structures demonstrate that the proposed MSCP method achieves higher precision than traditional mode shape identification methods.

The additional advantages of the MSCP method include (i) lower requirement on the frequency analysis of only damaged structures and (ii) higher effectiveness for minor damage scenarios.

In fact, the lower the damage, the higher the precision achieved by the MSCP method.

As illustrated in the paper, the proposed technique has excellent applications in mode shapes identification and structural health monitoring.

American Psychological Association (APA)

Zhang, Liye& Xia, Ye& Lozano-Galant, Jose Antonio& Sun, Limin. 2019. Mass-Stiffness Combined Perturbation Method for Mode Shape Monitoring of Bridge Structures. Shock and Vibration،Vol. 2019, no. 2019, pp.1-14.
https://search.emarefa.net/detail/BIM-1211506

Modern Language Association (MLA)

Zhang, Liye…[et al.]. Mass-Stiffness Combined Perturbation Method for Mode Shape Monitoring of Bridge Structures. Shock and Vibration No. 2019 (2019), pp.1-14.
https://search.emarefa.net/detail/BIM-1211506

American Medical Association (AMA)

Zhang, Liye& Xia, Ye& Lozano-Galant, Jose Antonio& Sun, Limin. Mass-Stiffness Combined Perturbation Method for Mode Shape Monitoring of Bridge Structures. Shock and Vibration. 2019. Vol. 2019, no. 2019, pp.1-14.
https://search.emarefa.net/detail/BIM-1211506

Data Type

Journal Articles

Language

English

Notes

Includes bibliographical references

Record ID

BIM-1211506