Acceleration Signal Processing Method of Impact Response of Floating Shock Platform Based on Rigid Body Motion Model
Joint Authors
Zhang, Wenqi
Yao, Xiongliang
Wang, Zhikai
Chen, Jin
Yang, Heng
Source
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-15, 15 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-10-29
Country of Publication
Egypt
No. of Pages
15
Main Subjects
Abstract EN
Floating shock platform is generally used to test the antishock performance of large shipboard equipment.
Shock acceleration signal will produce zero-shift phenomenon in the test measurement process, which will affect the subsequent shock response spectrum analysis.
In this paper, a method of shock acceleration signal processing based on rigid body motion revision model is established.
The rigid body motion revision model adopts the theory of ship’s seakeeping based on the hypothesis of KrylovFroude, in which the shock wave load of underwater explosion adopts the empirical formula.
The bubble pulsation load adopts the GeersHunter spherical bubble model.
The empirical mode decomposition method is used to eliminate the trend term of the low-frequency part of the acceleration signal, and the frequency filtering technology is used to eliminate the noise of the high frequency part.
The response estimated by the rigid body motion model is used to modify the measured signal.
The modified signal is analyzed by shock response spectrum to get the round design spectrum.
The validity of the signal is determined by the Pauta criterion.
Finally, the shock environment statistics of the whole platform is given.
This method can eliminate the low-frequency trend term and high frequency noise and has good robustness.
It can be applied to many kinds of signals.
This method can provide technical support for antishock performance of shipboard equipment and also applied to other shock signal processing fields.
American Psychological Association (APA)
Zhang, Wenqi& Yao, Xiongliang& Wang, Zhikai& Chen, Jin& Yang, Heng. 2020. Acceleration Signal Processing Method of Impact Response of Floating Shock Platform Based on Rigid Body Motion Model. Shock and Vibration،Vol. 2020, no. 2020, pp.1-15.
https://search.emarefa.net/detail/BIM-1212719
Modern Language Association (MLA)
Zhang, Wenqi…[et al.]. Acceleration Signal Processing Method of Impact Response of Floating Shock Platform Based on Rigid Body Motion Model. Shock and Vibration No. 2020 (2020), pp.1-15.
https://search.emarefa.net/detail/BIM-1212719
American Medical Association (AMA)
Zhang, Wenqi& Yao, Xiongliang& Wang, Zhikai& Chen, Jin& Yang, Heng. Acceleration Signal Processing Method of Impact Response of Floating Shock Platform Based on Rigid Body Motion Model. Shock and Vibration. 2020. Vol. 2020, no. 2020, pp.1-15.
https://search.emarefa.net/detail/BIM-1212719
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1212719