Nonlinear Vibration Mechanism of the Marine Rotating Machinery with Airbag Isolation Device under Heaving Motion
In this paper, we put an investigation into the nonlinear vibration mechanism of the marine rotating machinery with an airbag isolation device under heaving motion. First, we consider the effects of mass unbalance and heaving motion and propose a mathematical model of the marine rotating mechanical...
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| Format: | Article |
| Language: | English |
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Wiley
2021-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2021/8816723 |
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| _version_ | 1832554048085032960 |
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| author | Xiaolei Du Ming Li |
| author_facet | Xiaolei Du Ming Li |
| author_sort | Xiaolei Du |
| collection | DOAJ |
| description | In this paper, we put an investigation into the nonlinear vibration mechanism of the marine rotating machinery with an airbag isolation device under heaving motion. First, we consider the effects of mass unbalance and heaving motion and propose a mathematical model of the marine rotating mechanical system with airbag vibration isolation. Then, the multiple-scale method is conducted to analyze the nonlinear dynamic characteristics of the mechanical system; the frequency-response curves are mainly studied under different parameters, such as the heave excitation, rotor speed, and damping; and the numerical method is also introduced to analyze its dynamic behaviors, such as the steady-state response and its corresponding phase diagram, Poincaré section. The dynamic stability of the system is investigated based on the bifurcations and the largest Lyapunov exponent about rotor speed and heaving frequency. The obtained results indicate complex nonlinear characteristics of the system compared to the system without heaving excitation, which can help us fully understand the dynamic characteristics and parametric optimization as well as structural design of the marine mechanical isolation system. |
| format | Article |
| id | doaj-art-e4c032cdfc5f47a8a33ef8de90c71cfe |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-e4c032cdfc5f47a8a33ef8de90c71cfe2025-02-03T05:52:37ZengWileyShock and Vibration1070-96221875-92032021-01-01202110.1155/2021/88167238816723Nonlinear Vibration Mechanism of the Marine Rotating Machinery with Airbag Isolation Device under Heaving MotionXiaolei Du0Ming Li1Department of Mechanics, Xi’an University of Science and Technology, 710054 Shaanxi, Xi’an, ChinaDepartment of Mechanics, Xi’an University of Science and Technology, 710054 Shaanxi, Xi’an, ChinaIn this paper, we put an investigation into the nonlinear vibration mechanism of the marine rotating machinery with an airbag isolation device under heaving motion. First, we consider the effects of mass unbalance and heaving motion and propose a mathematical model of the marine rotating mechanical system with airbag vibration isolation. Then, the multiple-scale method is conducted to analyze the nonlinear dynamic characteristics of the mechanical system; the frequency-response curves are mainly studied under different parameters, such as the heave excitation, rotor speed, and damping; and the numerical method is also introduced to analyze its dynamic behaviors, such as the steady-state response and its corresponding phase diagram, Poincaré section. The dynamic stability of the system is investigated based on the bifurcations and the largest Lyapunov exponent about rotor speed and heaving frequency. The obtained results indicate complex nonlinear characteristics of the system compared to the system without heaving excitation, which can help us fully understand the dynamic characteristics and parametric optimization as well as structural design of the marine mechanical isolation system.http://dx.doi.org/10.1155/2021/8816723 |
| spellingShingle | Xiaolei Du Ming Li Nonlinear Vibration Mechanism of the Marine Rotating Machinery with Airbag Isolation Device under Heaving Motion Shock and Vibration |
| title | Nonlinear Vibration Mechanism of the Marine Rotating Machinery with Airbag Isolation Device under Heaving Motion |
| title_full | Nonlinear Vibration Mechanism of the Marine Rotating Machinery with Airbag Isolation Device under Heaving Motion |
| title_fullStr | Nonlinear Vibration Mechanism of the Marine Rotating Machinery with Airbag Isolation Device under Heaving Motion |
| title_full_unstemmed | Nonlinear Vibration Mechanism of the Marine Rotating Machinery with Airbag Isolation Device under Heaving Motion |
| title_short | Nonlinear Vibration Mechanism of the Marine Rotating Machinery with Airbag Isolation Device under Heaving Motion |
| title_sort | nonlinear vibration mechanism of the marine rotating machinery with airbag isolation device under heaving motion |
| url | http://dx.doi.org/10.1155/2021/8816723 |
| work_keys_str_mv | AT xiaoleidu nonlinearvibrationmechanismofthemarinerotatingmachinerywithairbagisolationdeviceunderheavingmotion AT mingli nonlinearvibrationmechanismofthemarinerotatingmachinerywithairbagisolationdeviceunderheavingmotion |