Damage Identification of a Derrick Steel Structure Based on the HHT Marginal Spectrum Amplitude Curvature Difference
Joint Authors
Han, Dongying
Shi, Peiming
Wei, Shimin
Zhang, Ying
Gao, Kai
Tian, Nengyuan
Source
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-09-17
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
For the damage identification of derrick steel structures, traditional methods often require high-order vibration information of structures to identify damage accurately.
However, the high-order vibration information of structures is difficult to acquire.
Based on the technology of signal feature extraction, only using the low-order vibration information, taking the right front leg as an example, we analyzed the selection of HHT marginal spectrum amplitude and the calculation process of its curvature in practical application, designed the damage conditions of a derrick steel structure, used the index and intrinsic mode function (IMF) instantaneous energy curvature method to perform the damage simulation calculation and comparison, and verified the effect of identifying the damage location in a noisy environment.
The results show that the index can accurately determine the location of the damage element and weak damage element and can be used to qualitatively analyze the damage degree of the element; under the impact load, the noise hardly affects the identification of the damage location.
Finally, this method was applied to the ZJ70 derrick steel structure laboratory model and compared with the IMF instantaneous energy curvature method.
We verified the feasibility of this method in the damage location simulation experiment.
American Psychological Association (APA)
Han, Dongying& Wei, Shimin& Shi, Peiming& Zhang, Ying& Gao, Kai& Tian, Nengyuan. 2017. Damage Identification of a Derrick Steel Structure Based on the HHT Marginal Spectrum Amplitude Curvature Difference. Shock and Vibration،Vol. 2017, no. 2017, pp.1-9.
https://search.emarefa.net/detail/BIM-1203910
Modern Language Association (MLA)
Han, Dongying…[et al.]. Damage Identification of a Derrick Steel Structure Based on the HHT Marginal Spectrum Amplitude Curvature Difference. Shock and Vibration No. 2017 (2017), pp.1-9.
https://search.emarefa.net/detail/BIM-1203910
American Medical Association (AMA)
Han, Dongying& Wei, Shimin& Shi, Peiming& Zhang, Ying& Gao, Kai& Tian, Nengyuan. Damage Identification of a Derrick Steel Structure Based on the HHT Marginal Spectrum Amplitude Curvature Difference. Shock and Vibration. 2017. Vol. 2017, no. 2017, pp.1-9.
https://search.emarefa.net/detail/BIM-1203910
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1203910