Acceleration Signal Processing Method of Impact Response of Floating Shock Platform Based on Rigid Body Motion Model
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...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2020-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2020/8826675 |
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| _version_ | 1832566521292914688 |
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| author | Xiongliang Yao Wenqi Zhang Zhikai Wang Jin Chen Heng Yang |
| author_facet | Xiongliang Yao Wenqi Zhang Zhikai Wang Jin Chen Heng Yang |
| author_sort | Xiongliang Yao |
| collection | DOAJ |
| description | 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. |
| format | Article |
| id | doaj-art-01b2c9de15144cd8aea254be9ab80331 |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-01b2c9de15144cd8aea254be9ab803312025-02-03T01:03:56ZengWileyShock and Vibration1070-96221875-92032020-01-01202010.1155/2020/88266758826675Acceleration Signal Processing Method of Impact Response of Floating Shock Platform Based on Rigid Body Motion ModelXiongliang Yao0Wenqi Zhang1Zhikai Wang2Jin Chen3Heng Yang4College of Shipbuilding Engineering, Harbin Engineering University, Harbin 150001, ChinaCollege of Shipbuilding Engineering, Harbin Engineering University, Harbin 150001, ChinaCollege of Shipbuilding Engineering, Harbin Engineering University, Harbin 150001, ChinaCollege of Shipbuilding Engineering, Harbin Engineering University, Harbin 150001, ChinaCollege of Shipbuilding Engineering, Harbin Engineering University, Harbin 150001, ChinaFloating 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.http://dx.doi.org/10.1155/2020/8826675 |
| spellingShingle | Xiongliang Yao Wenqi Zhang Zhikai Wang Jin Chen Heng Yang Acceleration Signal Processing Method of Impact Response of Floating Shock Platform Based on Rigid Body Motion Model Shock and Vibration |
| title | Acceleration Signal Processing Method of Impact Response of Floating Shock Platform Based on Rigid Body Motion Model |
| title_full | Acceleration Signal Processing Method of Impact Response of Floating Shock Platform Based on Rigid Body Motion Model |
| title_fullStr | Acceleration Signal Processing Method of Impact Response of Floating Shock Platform Based on Rigid Body Motion Model |
| title_full_unstemmed | Acceleration Signal Processing Method of Impact Response of Floating Shock Platform Based on Rigid Body Motion Model |
| title_short | Acceleration Signal Processing Method of Impact Response of Floating Shock Platform Based on Rigid Body Motion Model |
| title_sort | acceleration signal processing method of impact response of floating shock platform based on rigid body motion model |
| url | http://dx.doi.org/10.1155/2020/8826675 |
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