Instability of mistuned tube-array structures with axial loads

Huang, Bo-Wun; Yu, Pu-Ping; Chen, Gong-Sheng

doi:10.1007/s11071-013-0884-x

Cited by 3 publications

(3 citation statements)

References 27 publications

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“…ese flowinduced instabilities may severely damage the tubes. For example, the resultant large displacement may cause the tube to impact onto the loose supports and always wear with loose supports [11]; the axial pressure from manufacturing may cause the tube to lose stability either by fluttering or buckling [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

“…e results show that, with increasing initial axial load, the tube may still exhibit a symmetric limit cycle motion even beyond the critical cross-flow velocity. Huang et al [13] examined the instability of mistuned tube arrays considering axial loads and obtained regions of stability. Results indicate that the axial load substantially changes the stability of the cross-flow tube array system with fluid coupling.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Nonlinear Dynamics of Cross‐Flow Tubes Subjected to Initial Axial Load and Distributed Impacting Constraints

Mengdi

Wang

Qin

et al. 2021

Shock and Vibration

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The dynamics of cross-flow tubes were studied in consideration of initial axial load and distributed impacting constraints, modeled as cubic and trilinear spring constraints. The tubes were modeled as Euler–Bernoulli beams and supported at both ends, including the simply supported tube and clamped-clamped tube. The analytical model involves a time-delayed displacement term induced by the cross flow based on the quasi-steady theory. For simplicity, a single flexible supported beam in a rigid square array of cylinders was studied by using the damping-controlled mechanism. The mean extension of the tube was considered, and thus, it added another nonlinear term in the equation of motion. Results show that the tube loses stability by buckling and fluttering at various initial pressure loads and cross-flow velocities. An increase was observed for critical velocities and initial pressure loads. Chaotic oscillations were observed for the trilinear spring model. The distribution of the impacting forces was also calculated. Some of the fresh results obtained in the impact system are expected to be helpful in understanding and controlling the dynamic responses of fluid-conveying pipes.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Nonlinear Dynamics of Cross‐Flow Tubes Subjected to Initial Axial Load and Distributed Impacting Constraints

Mengdi

Wang

Qin

et al. 2021

Shock and Vibration

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“…The study results indicate that the severe vibration of GCRS can be motivated with the offset of the axes of rotational components, and the vibration frequency is equivalent to the lateral natural frequency. Kim [10] and Huang [11] used the transfer matrix to establish the dynamic model and conduct the natural characteristics analysis. The characteristics of the harmonic component were reviewed through the steady-state However, the dynamic characteristics of GCRS (an important power transmission system in propulsion shaft system) are critically influenced by the misalignment of gear coupling.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Characteristics of Gear Coupling and Rotor System in Transmission Process Considering Misalignment and Tooth Contact Analysis

2020

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The dynamic vibration of the gear coupling-rotor system (GCRS) caused by misalignment is an important factor of low frequency vibration and noise radiation of the naval marine. The axial misalignment of gear coupling is inevitable owing to mass eccentricity, and is unconstrained in axial direction at high-speed operation. Therefore, the dynamic model of GCRS is proposed, considering gear-coupling misalignment and contact force in this paper. The whole motion differential equation of GCRS is established based on the finite element method. Moreover, the numerical calculation method of meshing force, considering the uniform distribution load on contact surface, is presented, and the mathematical predictive time–frequency characteristics are analyzed by the Newmark stepwise integral approach. Finally, a reduced-scale application of the propulsion shaft system is utilized to validate the effectiveness of the proposed dynamic model. For the sensibility to low-frequency vibration, the natural frequencies and vibration modes of GCRS are analyzed through the processing and analysis of acceleration signal. The experimental dynamic response and main components of vibration are respectively consistent with mathematical results, which demonstrate the effectiveness of the proposed dynamic model of GCRS with misalignment. Furthermore, it also shows that the proposed finite element analysis and calculation method are suitable for complex shafting, providing a novel thought for dynamic analysis of the propeller–shaft–hull coupled system of marine.

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Parametric resonance of a fluctuation fluid flow heat exchanger system

Huang

Chen²,

2018

International Journal of Mechanical Sciences

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Instability of mistuned tube-array structures with axial loads

Cited by 3 publications

References 27 publications

Nonlinear Dynamics of Cross‐Flow Tubes Subjected to Initial Axial Load and Distributed Impacting Constraints

Nonlinear Dynamics of Cross‐Flow Tubes Subjected to Initial Axial Load and Distributed Impacting Constraints

Dynamic Characteristics of Gear Coupling and Rotor System in Transmission Process Considering Misalignment and Tooth Contact Analysis

Parametric resonance of a fluctuation fluid flow heat exchanger system

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