Semi-analytical modeling and vibration analysis for U-shaped, Z-shaped and regular spatial pipelines supported by multiple clamps

Sun, Wei; Ma, Hongwei; Ji, Wenhao; Ma, Hui

doi:10.1016/j.euromechsol.2022.104797

Cited by 30 publications

(2 citation statements)

References 42 publications

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“…FEM is a relatively mature method for structural modal analysis and response calculation [ 11 , 12 ]. The semi-analytical method combined with large-scale engineering software has also solved many complex piping problems [ 13 , 14 ]. Now many large-scale software, such as ANSYS FLUENT, have FSI modules for calculation and analysis.…”

Section: Introductionmentioning

confidence: 99%

Riccati transfer equations for fluid structure interaction in liquid-filled piping systems

Rui

Zhang

et al. 2023

Heliyon

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Section: Introductionmentioning

confidence: 99%

Riccati transfer equations for fluid structure interaction in liquid-filled piping systems

Rui

Zhang

et al. 2023

Heliyon

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“…has come into being recently. While for pipe structure, accessories such as connector [24] and restrained clip [25], complex spatial configuration [26][27], the material is functionally gradient [28][29][30][31], altered geometric shape [32][33] etc. are some research hotspots in recent years.…”

Section: Introductionmentioning

confidence: 99%

Dynamics of a cantilevered fluid-conveying straight pipe with centrosymmetric rib plates installed at its fixed end

Zhao,

Cai,

et al. 2023

Preprint

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Rib plates are often used for improving load-bearing capacity, to study the influences of centrosymmetric rib plates installed at the fixed end on the dynamics of a cantilevered fluid-conveying straight pipe, the governing equation is deduced based on D’Alembert principle at first, during this process, the centrosymmetric rib plates are equivalently replaced by the combination of a series of linear and torsional springs whose stiffness coefficients are formulated according to thin plate bending theory. Then Galerkin method is used to discretize the above governing equation, where the shape functions are just the mode functions of cantilevered Euler-Bernoulli straight beam deduced by differential transformation method, the expressions of eigenfunction for flow-induced vibration and steady-state displacement response for forced vibration are obtained subsequently. Numerical experiments of a real water-supplying pipe are carried out, some conclusions never mentioned in published literatures are drawn. The same dynamic problems for other kinds of straight pipes and for curved pipes possessing one clamped end are also discussed. The investigation has reference meaning for optimal design of rib plates in aspects of geometric sizes and materials, also for optimal design of supporting formats of fluid-conveying pipes.

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Dynamic modeling of fluid-conveying pipes restrained by a retaining clip

Dou¹,

Ding²,

Mao³

et al. 2023

Appl. Math. Mech.-Engl. Ed.

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Although most pipes are restrained by retaining clips in aircrafts, the influence of the clip parameters on the vibration of the fluid-conveying pipe has not been revealed. By considering the clip width, a new dynamic model of a fluid-conveying pipe restrained by an intermediate clip is established in this paper. To demonstrate the necessity of the proposed model, a half pipe model is established by modeling the clip as one end. By comparing the two models, it is found that the half pipe model overestimates the critical velocity and may estimate the dynamical behavior of the pipe incorrectly. In addition, with the increase in the clip stiffness, the conversion processes of the first two modes of the pipe are shown. Furthermore, by ignoring the width of the clip, the effect of the flow velocity on the accuracy of a concentrated restraint clip model is presented. When the flow velocity is close to the critical velocity, the accuracy of the concentrated restraint clip model significantly reduces, especially when the width of the clip is large. In general, the contribution of this paper is to establish a dynamic model of the fluid-conveying pipe which can describe the influence of the clip parameters, and to demonstrate the necessity of this model.

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Semi-analytical modeling and vibration analysis for U-shaped, Z-shaped and regular spatial pipelines supported by multiple clamps

Cited by 30 publications

References 42 publications

Riccati transfer equations for fluid structure interaction in liquid-filled piping systems

Riccati transfer equations for fluid structure interaction in liquid-filled piping systems

Dynamics of a cantilevered fluid-conveying straight pipe with centrosymmetric rib plates installed at its fixed end

Dynamic modeling of fluid-conveying pipes restrained by a retaining clip

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