Numerical Simulation and Analysis of Hydraulic Excitation System Based on Water Hammer by the Method of Characteristics

Zhang, Hui Xian; Kou, Zi Ming; Wu, Juan; Lu, Chun Yue

doi:10.4028/www.scientific.net/amr.295-297.2210

Cited by 3 publications

(1 citation statement)

References 5 publications

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“…erefore, for a general hydraulic system, hydraulic shocks are hazardous and should be eliminated or mitigated [29]. However, the pressure wave can be favorable if it can be controlled actively using a hydraulic excitation system and its large amount of energy used for the vibration output [30,31].…”

Section: Introductionmentioning

confidence: 99%

Development and Parametric Analysis of Vibration System Controlled by Hydraulic Shock Rotary Vibrator

Ren

Kou

et al. 2021

Shock and Vibration

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The improvement of the energy utilization rate of a hydraulic vibration-excitation system is critical to the research and development of hydraulic vibration equipment. In this paper, a hydraulic vibration-excitation system controlled by a new type of shock rotary vibrator is proposed. A system model considering the pipeline effect was established for the hydraulic shock phenomenon. In addition, the model was compared with the one that does not consider the pipeline effect. The effectiveness of the proposed model was verified experimentally. Finally, the shock phenomenon during the process of switching the working state of the vibrator and the influence of certain important parameters of the system on the vibration output were investigated based on the proposed model. The results showed that (1) the hydraulic shock phenomenon occurred when the working state of the hydraulic vibrator was switched and (2) the hydraulic shock wave could effectively improve the excitation force of the system. The excitation force increased with an increase in the oil supply pressure, spindle speed, and load. However, it was negatively correlated with the spring stiffness. The amplitude of the vibration waveform output was positively correlated with the oil supply pressure and negatively correlated with the spindle speed and load. The amplitude first increased and then decreased as the stiffness of the vibration spring increased. The only influence of the precompressed length of the spring on the system output was its alteration of the vibration center of the system output vibration.

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Section: Introductionmentioning

confidence: 99%

Development and Parametric Analysis of Vibration System Controlled by Hydraulic Shock Rotary Vibrator

Ren

Kou

et al. 2021

Shock and Vibration

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Optimal Design for Shock Damper with Genetic Algorithm to Control Water Hammer Effects in Complex Water Distribution Systems

Bostan

Akhtari

Bonakdari

et al. 2019

Water Resour Manage

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Modeling and Experiment on Active Vibration Control of Hydraulic Excitation System

Zhang

Miao

2012

AMM

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For studying dynamic characteristics of fluid filled pipe under hydraulic excitation force generated actively by a new developed vibration exciter, at first a computer code based on the method of characteristics (MOC) was developed. Then the excitation force calculated by MOC was applied to the corresponding nodes of finite element of pipe, by using Newmark’s method, the dynamic response at every cross section of pipe was obtained. The numerical simulations show that a simple harmonic motion arises at every cross section of the pipe, and the lateral vibration amplitude of every node along the pipe increases as the rising excitation force. In addition, measured data were compared with numerical simulation, which were basically consistent with each other.

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Numerical Simulation and Analysis of Hydraulic Excitation System Based on Water Hammer by the Method of Characteristics

Cited by 3 publications

References 5 publications

Development and Parametric Analysis of Vibration System Controlled by Hydraulic Shock Rotary Vibrator

Development and Parametric Analysis of Vibration System Controlled by Hydraulic Shock Rotary Vibrator

Optimal Design for Shock Damper with Genetic Algorithm to Control Water Hammer Effects in Complex Water Distribution Systems

Modeling and Experiment on Active Vibration Control of Hydraulic Excitation System

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