Vibration transmission path analysis of underwater vehicle power plant based on TPA power flow

Yang, Yang; Pan, Guang; Yin, Shougen; Yuan, Ying

doi:10.1177/14750902211024068

Cited by 2 publications

(2 citation statements)

References 30 publications

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“…1,2 Various research about water hydraulics is also conducted, such as water hydraulic valves, pumps, the material of friction pairs, and so on. [3][4][5][6] Especially in recent years, seawater hydraulics has been widely used in underwater equipment, for it directly utilizes seawater as the working medium. Thus, oil tanks could be eliminated, making the hydraulic system simpler and more compact.…”

Section: Introductionmentioning

confidence: 99%

Research on the sealing performance of a seawater stop valve considering roundness error used in an 11000-m manned submersible

Wang

Liu

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part C:

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The sealing performance is a critical characteristic of the stop valve used in an 11000-m manned submersible, while it is a challenge when the pressure difference at the valve port reaches 120 MPa. Previous studies have mainly focused on the effect of surface microtopography, such as the surface roughness, on sealing performance. They believed that rougher surfaces will result in more severe leaks. However, in the sealing experiments of two stop valves with different materials and surface roughness in this paper, the relationship between surface roughness and sealing performance is inconsistent with existing research. There should be another factor that affects the sealing performance of the stop valves more strongly. So a new sealing principle considering the roundness error is proposed. The sealing force, which is determined by the environmental pressure, creates radial deformation on the valve port. The radial deformation of the valve seat is analyzed by a validated finite element analysis (FEA) at various environmental pressures. Then the critical environmental pressure at which the leak stops is obtained when the radial deformation is greater than the roundness error, which is measured. The results show that the critical environmental pressure obtained by FEA is very close to that obtained by experiment. So the consideration of the roundness error of the valve seat is accurate and helpful to the research on the sealing performance of the ultra-high pressure stop valves, and the sealing performance of the ultra-high pressure stop valve can be easily evaluated by FEA.

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Section: Introductionmentioning

confidence: 99%

Research on the sealing performance of a seawater stop valve considering roundness error used in an 11000-m manned submersible

Wang

Liu

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part C:

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“…Notably, its advantage lies in frequency domain analysis, allowing precise representation of vibration energy distribution across each layer of the structure. Following Goyder's description and discourse on a continuum-dynamics-centered power flow analysis approach [7][8][9], the power flow theory finds extensive application in diverse fields like marine, aerospace, and machinery [10][11][12]. This approach is equally relevant in the context of rail transportation, constituting a continuous dynamics challenge.…”

Section: Introductionmentioning

confidence: 99%

Influence of Fastener Stiffness and Damping on Vibration Transfer Characteristics of Urban Railway Bridge Lines Using Vibration Power Flow Method

Cao,

Yang,

et al. 2023

Applied Sciences

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The problem of vibration in urban rail transportation has become a current research hotspot. When a train passes through a bridge line at high speed, it interacts with the rail, leading to vibration energy transfer and causing issues such as vibration and noise in the line infrastructure. To propose a more targeted vibration-damping track structure, it is necessary to explore the vibration characteristics of urban rail transit bridge lines and understand the regulations governing the distribution of vibration energy. This paper employs the theory of vehicle–rail–bridge interaction to establish a coupled dynamics model for a subway A-type vehicle–integral ballast bed–box girder bridge. Based on the proposed model, the transmission characteristics and distribution of vibration energy in the rail–bridge system are systematically analyzed and the influence of the parameters of the track structural components on the power flow of the system are investigated. The results of this study indicate that low-frequency vibration energy in the track system of urban rail transit bridges is primarily concentrated within the track structure, whereas high-frequency vibration energy is mainly focused on the rail. The fastener, as a component connecting the rail and the overall roadbed, has different effects on the peak value of the power flow and the accumulation of vibration energy in various components such as the rail, the overall roadbed, the top plate of the box girder bridge, and the bottom plate in different frequency bands due to its own stiffness and damping. An appropriate increase in fastener damping is beneficial for reducing the accumulation of low-frequency vibration energy in the track structure.

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Vibration transmission path analysis of underwater vehicle power plant based on TPA power flow

Cited by 2 publications

References 30 publications

Research on the sealing performance of a seawater stop valve considering roundness error used in an 11000-m manned submersible

Research on the sealing performance of a seawater stop valve considering roundness error used in an 11000-m manned submersible

Influence of Fastener Stiffness and Damping on Vibration Transfer Characteristics of Urban Railway Bridge Lines Using Vibration Power Flow Method

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