Analytical Method for Fluid‐Solid Coupling Vibration Analysis of Hydraulic Pipeline System with Hinged Ends

Zhang, Tianxiao; Cui, Jin

doi:10.1155/2021/8846869

Cited by 6 publications

(6 citation statements)

References 20 publications

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“…The direct FSI approach provides an intuitive and accurate method for solving FSI problems by solving the fluid and solid domains simultaneously within a single solver. The control equations for the direct FSI approach are presented as follows [53].…”

Section: The Solution Methods For Fluid-structure Interaction In a Da...mentioning

confidence: 99%

Investigation of Crack Propagation and Failure of Liquid-Filled Cylindrical Shells Damaged in High-Pressure Environments

Zhang,

Tan,

et al. 2024

JMSE

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Cylindrical shell structures have excellent structural properties and load-bearing capacities in fields such as aerospace, marine engineering, and nuclear power. However, under high-pressure conditions, cylindrical shells are prone to cracking due to impact, corrosion, and fatigue, leading to a reduction in structural strength or failure. This paper proposes a static modeling method for damaged liquid-filled cylindrical shells based on the extended finite element method (XFEM). It investigated the impact of different initial crack angles on the crack propagation path and failure process of liquid-filled cylindrical shells, overcoming the difficulties of accurately simulating stress concentration at crack tips and discontinuities in the propagation path encountered in traditional finite element methods. Additionally, based on fluid‒structure interaction theory, a dynamic model for damaged liquid-filled cylindrical shells was established, analyzing the changes in pressure and flow state of the fluid during crack propagation. Experimental results showed that although the initial crack angle had a slight effect on the crack propagation path, the crack ultimately extended along both sides of the main axis of the cylindrical shell. When the initial crack angle was 0°, the crack propagation path was more likely to form a through-crack, with the highest penetration rate, whereas when the initial crack angle was 75°, the crack propagation speed was slower. After fluid entered the cylindrical shell, it spurted along the crack propagation path, forming a wave crest at the initial ejection position.

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Section: The Solution Methods For Fluid-structure Interaction In a Da...mentioning

confidence: 99%

Investigation of Crack Propagation and Failure of Liquid-Filled Cylindrical Shells Damaged in High-Pressure Environments

Zhang,

Tan,

et al. 2024

JMSE

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“…The results indicated that increases in material viscosity decrease the critical flow velocity that can cause pipeline vibration. Zhang and Cui (2021) focused on an aviation hydraulic pipeline and established a fluid-solid coupling vibration model of a pipeline system by considering the effect of the clamp. The validity and accuracy of the vibration model were verified via the finite element method.…”

Section: Introductionmentioning

confidence: 99%

Research on vibration characteristics of rocket engine flow pipeline

Yong,

Wu-Qi

2024

AEAT

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Purpose Abnormal vibrations often occur in the liquid oxygen kerosene transmission pipelines of rocket engines, which seriously threaten their safety. Improper handling can result in failed rocket launches and significant economic losses. Therefore, this paper aims to examine vibrations in transmission pipelines. Design/methodology/approach In this study, a three-dimensional high-pressure pipeline model composed of corrugated pipes, multi-section bent pipes, and other auxiliary structures was established. The fluid–solid coupling method was used to analyse vibration characteristics of the pipeline under various external excitations. The simulation results were visualised using MATLAB, and their validity was verified via a thermal test. Findings In this study, the vibration mechanism of a complex high-pressure pipeline was examined via a visualisation method. The results showed that the low-frequency vibration of the pipe was caused by fluid self-excited pressure pulsation, whereas the vibration of the engine system caused a high-frequency vibration of the pipeline. The excitation of external pressure pulses did not significantly affect the vibrations of the pipelines. The visualisation results indicated that the severe vibration position of the pipeline thermal test is mainly concentrated between the inlet and outlet and between the two bellows. Practical implications The results of this study aid in understanding the causes of abnormal vibrations in rocket engine pipelines. Originality/value The causes of different vibration frequencies in the complex pipelines of rocket engines and the propagation characteristics of external vibration excitation were obtained.

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“…The majority of these areas of applications expose them to vibrations and mechanical shocks. For instance, a connector pipe in hydraulic coupling systems incurs hydraulic shock each time a submersible pump is turned-on [37]. Therefore, the study of the damping behaviour of Cu-Zn-Sn based alloys is necessary to evaluate their reliability in service.…”

Section: Introductionmentioning

confidence: 99%

Dynamic mechanical damping analysis of up/step-quenched Cu-Zn-Sn-based shape memory alloys

Anaele,

Alaneme,

Omotoyinbo

2024

Mater. Res. Express

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The effect of thermal quenching procedures on the damping properties of Cu-Zn-Sn-based SMAs is reported. Three compositions of Cu-Zn-Sn-based SMAs designated A (Cu-15.6Zn-12.1Sn), B (Cu-26.1Zn-9.3Sn), and C (Cu-29.6Zn-8.9Sn) samples produced by the casting process were subjected to direct quenching, up-quenching, and step-quenching treatments. The microstructure of the samples was examined using the backscattered electron microscope with fixtures for energy-dispersive spectroscopy analysis. The damping properties were assessed on a dynamic mechanical analyzer and presented in terms of tan delta. The microstructures of Cu-Zn-Sn-based SMAs consist of γ-Cu5Zn8 and Cu4 major phases containing some black dot precipitation and a small amount of white circular precipitates in the parent phase. For the A alloys, the step-quenched samples exhibited the highest damping capacity with peak internal friction of 0.041 at 37℃, which is greater than 0.028 at 37℃ and 0.26 at 25℃ obtained for the up-quenched and direct-quenched samples respectively. The step-quenched B alloys show the highest damping capacity with peak internal friction of 0.104 at 227℃, which is far greater than 0.053 at 23℃ and 0.034 at 35℃ obtained for the up-quenched and direct-quenched samples respectively. For the C alloys, the up-quenched samples show the highest damping capacity with peak internal friction of 0.053 at 235℃, which is greater than the peak values of 0.037 at 238℃ obtained for the step-quenched samples. Direct-quenched samples gave the lowest damping capacity with a peak value of 0.027 at 235℃. In general, step-quenching treatment effectively improved the damping properties of Cu-Zn-Sn-based SMAs.

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Analytical Method for Fluid‐Solid Coupling Vibration Analysis of Hydraulic Pipeline System with Hinged Ends

Cited by 6 publications

References 20 publications

Investigation of Crack Propagation and Failure of Liquid-Filled Cylindrical Shells Damaged in High-Pressure Environments

Investigation of Crack Propagation and Failure of Liquid-Filled Cylindrical Shells Damaged in High-Pressure Environments

Research on vibration characteristics of rocket engine flow pipeline

Dynamic mechanical damping analysis of up/step-quenched Cu-Zn-Sn-based shape memory alloys

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