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Stability of Cracked Fluid Conveying Pipeline on Elastic

  • Description:Stability of Cracked Fluid-Conveying Pipeline on Elastic ...The effects of crack location and elastic foundation stiffness to the form of instability of the pipes under the distributed follower force are analyzed. Results show that the elastic foundation stiffness can enforce the stability of the pipes effectively, and the effects are more obvious wh ...
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Stability of Cracked Fluid Conveying Pipeline on Elastic Description

verview of Mechanics of Pipes onveying FluidsPart I Stability of Cracked Fluid Conveying Pipeline on Elastic

Other topics related to this part include emote impact analysis and parameter identification, pipe amage-induced by pressure elastic waves, the dynamic response nd stability of long pipes, marine risers together with pipes asirating fluid, and carbon nanotubes conveying fluid. DOI 10.1115/1.4001271A contribution to the stability of an overhanging pipe Stability of Cracked Fluid Conveying Pipeline on Elastic Apr 24, 2014We investigate the dynamic stability of a pipe that conveys fluid, clamped or pinned at one end and with an intermediate support, thus exhibiting an overhang. The model of the pipe incorporates both EulerBernoulli and BresseTimoshenko schemes as well as transverse inertia. Material and external damping mechanisms are taken into account, while the conveyed fluid is A contribution to the stability of an overhanging pipe Stability of Cracked Fluid Conveying Pipeline on Elastic The model of the pipe incorporates both EulerBernoulli and BresseTimoshenko schemes as well as transverse inertia. Material and external damping mechanisms are taken into account, while the conveyed fluid is supposed to be in fully turbulent flow. The pipe can rest on a linear elastic Winkler soil.

A contribution to the stability of an overhanging pipe Stability of Cracked Fluid Conveying Pipeline on Elastic

We investigate the dynamic stability of a pipe that conveys fluid, clamped or pinned at one end and with an intermediate support, thus exhibiting an overhang. The model of the pipe incorporates both EulerBernoulli and BresseTimoshenko schemes as well as trans verse inertia.Material and external damping mechanisms are taken into account, while the conveyed fluid is supposed to be in fully An Alternative Approach for Analyzing Stability of Stability of Cracked Fluid Conveying Pipeline on Elastic In many classes of problems of elastic systems such as gyroscopic and circulatory systems stability investigations are being conducted .The concept of a "stability boundary" arising in connection with multiple loading parameters is used for stability investigation. The concept is extended to analyze stability of conservative pipes conveying fluid since they are regarded as gyroscopic systems Stability of Cracked Fluid Conveying Pipeline on Elastic An efficient stochastic natural frequency analysis method Stability of Cracked Fluid Conveying Pipeline on Elastic The flow-induced vibration and stability analysis of pipes conveying fluid have been studied comprehensively in past several decades (Ibrahim, 2011). With the rapid development of FGM, the research of vibration analysis and dynamic behaviors on FGM pipes conveying fluid have also been carried out numerously.

Analysis of the vibration of pipes conveying uid

ANALYSIS OF THE VIBRATION OF PIPES CONVEYING FLUID 851 4. The diameter of the pipe is much smaller than its in which D is a symmetric stressstrain matrix length. 5. The motion of the pipe is planar. 6. There is no axial or lateral motion at either end of D=C EA p 00 0 EI 0 00KGA p the pipe. D Let coordinate x be in the axis at static Stability of Cracked Fluid Conveying Pipeline on Elastic Author Ventzeslav A. Dzhupanov, Peter A. Djondjorov, Vassil M. VassilevPublish Year 1999Effect of Open Crack on Vibration Behavior of a Fluid Stability of Cracked Fluid Conveying Pipeline on Elastic 140 G. Eslamiand V.A. Maleki / Effect of Open Crack on Vibration Behavior of a Fluid-Conveying Pipe Embedded in a Visco-Elastic Medium Latin American Journal of Solids and Structures 13 (2016) 136-154 in which, is local coordinate which varies from æ L0 to æ L = ë swiping the crack depth in the given strip, and :/ D ë ; is defined as (Tada et al. 1973):Cited by 11Publish Year 2004Author Bong Jo Ryu, Si-Ung Ryu, Geon Hee Kim, Kyung Bin YimDynamic stability of viscoelastic pipes on elastic Stability of Cracked Fluid Conveying Pipeline on Elastic Oct 24, 2006The dynamic stability of straight cantilevered viscoelastic pipes conveying inviscid fluid and lying on an elastic foundation of variable modulus is studied. The corresponding eigenvalue problem is solved using both Galerkin and shooting methods.

Cited by 19Publish Year 2006Author Vassil M. Vassilev, Peter A. DjondjorovOn the dynamic interaction of a pipe conveying fluid with Stability of Cracked Fluid Conveying Pipeline on Elastic

The problem of the dynamic stability of pipes conveying highspeed fluid and lying on an elastic foundation has been a subject of significant interest during the past 30 years due to the broad application of pipes as structural components in different technologies.Cited by 1Publish Year 2014Author Ye Zhou Sheng, Chang Qing Guo, Wei Bin HongVibration and dynamic stability of pipes conveying fluid Stability of Cracked Fluid Conveying Pipeline on Elastic The paper deals with the vibration and dynamic stability of cantilevered pipes conveying fluid on elastic foundations. The relationship between the eigenvalue branches and corresponding unstable Stability of Cracked Fluid Conveying Pipeline on Elastic Dynamic Response of Pipe Conveying Fluid with Lateral Stability of Cracked Fluid Conveying Pipeline on Elastic The Galerkin method is proposed to reveal the dynamic response of pipe conveying fluid (PCF), with lateral moving supports on both ends of the pipe. Firstly, the dynamic equation is derived by the Newtonian method after calculating the acceleration of the fluid element via the dynamics approach. Secondly, the discrete form of the dynamic equation is formulated by the Galerkin method.

Dynamic Stability of a Fluid-Coveying Cantilevered Pipe on Stability of Cracked Fluid Conveying Pipeline on Elastic

Based on an analytical study, a numerical analysis is made of the dynamic stability of a cantilevered steel pipe conveying a fluid. The pipe is modeled by a beam restrained at the left end and supported by a special device (a rotational elastic restraint plus a Q-apparatus) at the right end. The numerical analysis reveals that the critical velocity of the fluid depends on the governing Stability of Cracked Fluid Conveying Pipeline on Elastic Dynamic stability of elastically supported pipes conveying Stability of Cracked Fluid Conveying Pipeline on Elastic The effect of support flexibility on the dynamic behaviour of pipes conveying fluid is investigated for both steady and pulsatile flows. The pipes are built-in at the upstream end and supported at the other by both a translational and a rotational spring. For the steady flow condition, the critical flow velocities, the frequencies and flow induced damping patterns that are associated with the Stability of Cracked Fluid Conveying Pipeline on Elastic Dynamic stability of viscoelastic pipes on elastic Stability of Cracked Fluid Conveying Pipeline on Elastic Oct 24, 2006The dynamic stability of straight cantilevered viscoelastic pipes conveying inviscid fluid and lying on an elastic foundation of variable modulus is studied. The corresponding eigenvalue problem is solved using both Galerkin and shooting methods.

Dynamical stability of cantilevered pipe conveying fluid Stability of Cracked Fluid Conveying Pipeline on Elastic

When the velocity of fluid flow in a cantilevered pipe is successively increased, the system may become unstable and flutter instability would occur at a critical flow velocity. This paper is concerned with exploring the dynamical stability of a cantilevered fluid-conveying pipe with an additional linear dynamic vibration absorber (DVA) attachment.Dynamics of Tubular Cantilevers Conveying Fluid - M. P Stability of Cracked Fluid Conveying Pipeline on Elastic The experiments described in Part 2 were designed to illustrate the dynamical behaviour of vertical tubular cantilevers conveying fluid. The experiments were conducted with rubber tubes conveying either water or air. The tubes were either hanging down or standing upright.Effect of Open Crack on Vibration Behavior of a Fluid Stability of Cracked Fluid Conveying Pipeline on Elastic As seen from frequency equation , the natural frequency of the cracked pipe conveying fluid in visco-elastic medium depends on the fluid flow velocity. Figure 7 shows the natural frequency of the intact pipe versus the dimensionless flow velocity for the first and second vibration modes.

Elastic Foundation Scientific.Net

Stability of Cracked Fluid-Conveying Pipeline on Elastic Foundation under Distributed Follower Forces Authors Ye Zhou Sheng, Chang Qing Guo, Wei Bin Hong Abstract The differential equation of fluid-conveying pipes considering distributed follower force and elastic foundation is established.FEM Formulation for Dynamic Instability of Fluid-Conveying Stability of Cracked Fluid Conveying Pipeline on Elastic In this study, we investigate the effect of a nonuniform Winkler-type elastic foundation on the stability of pipes conveying fluid fixed at the upstream end only. A stability analysis of transverse motion aims at determining the flutter velocity as a function of the governing control parameters such as fluid mass over the pipe mass ratio, or foundation stiffness.Flow-Induced Vibration of Pipeline on Elastic Support Stability of Cracked Fluid Conveying Pipeline on Elastic Abstract We study the self-excited flexural vibration of a pipe due to internal flow which is entirely supported on elastic foundation. We consider a finite length pipe with clamped ends made of isotropic material consist of an internal flow with constant velocity. The Euler-Bernoulli model of beam is considered to analysis the vibratory behavior of pipe.

Free Vibration and Elastic Critical Load of Functionally Stability of Cracked Fluid Conveying Pipeline on Elastic

K. J. Park and Y. W. Kim , Vibration characteristics of fluid-conveying FGM cylindrical shells resting on Pasternak elastic foundation with an oblique edge, Thin-Walled Struct. 106 (2016) 407419. Crossref, ISI, Google Scholar; 16. A.LOCAL AND GLOBAL INSTABILITY OF FLUID OF FLUID-CONVEYING PIPES ON ELASTIC FOUNDATIONS O. DOARED AND E. DE LANGRE LadHyX, CNRS-E!cole Polytechnique, 91128 Palaiseau, France (Received 6 July 2000, and in "nal form 19 March 2001) We investigate the relationship between the local and global bending motions of #uid-conveyingpipes on an elastic foundation.Local and global instability of fluid-conveying pipes on Stability of Cracked Fluid Conveying Pipeline on Elastic We investigate the relationship between the local and global bending motions of fluid-conveying pipes on an elastic foundation. The local approach refers to an infinite pipe without taking into account its finite ends, while in the global approach we consider a pipe of finite length with a given set of boundary conditions. Several kinds of propagating disturbances are identified from the Stability of Cracked Fluid Conveying Pipeline on Elastic

Numerical Analysis of Clamped Fluid Conveying Pipe

dynamics and stability of flexible pipe containing flowing fluid, where flow velocity is entirely constant or with a small harmonic component superposed. L.G. Oslon and D. Janison [13] investigated motion of elastic pipes conveying fluid for various idealized cases. Nomenclature. S No Symbols Description 1 p Density of pipe in (kg/m3)Numerical Analysis of Clamped Fluid Conveying Pipedynamics and stability of flexible pipe containing flowing fluid, where flow velocity is entirely constant or with a small harmonic component superposed. L.G. Oslon and D. Janison [13] investigated motion of elastic pipes conveying fluid for various idealized cases. Nomenclature. S No Symbols Description 1 p Density of pipe in (kg/m3)On the Dynamics and Stability of a Viscoelastic Pipe Stability of Cracked Fluid Conveying Pipeline on Elastic The effect of variability of flow parameters especially at elevated temperatures can lead to instability, buckling and bursting of these systems. In this paper, the effect of high temperature fluid transmission on the vibration and stability of an offshore viscoelastic pipeline conveying a non-Newtonian fluid is investigated analytically.

On the dynamic interaction of a pipe conveying fluid with Stability of Cracked Fluid Conveying Pipeline on Elastic

The problem of the dynamic stability of pipes conveying highspeed fluid and lying on an elastic foundation has been a subject of significant interest during the past 30 years due to the broad application of pipes as structural components in different technologies. The present study contributes to the solution of this problem, suggesting a new model of the foundationan infinitely deep Stability of Cracked Fluid Conveying Pipeline on Elastic Overview of Mechanics of Pipes Conveying FluidsPart I Stability of Cracked Fluid Conveying Pipeline on Elastic In the first part, different types of modeling, dynamic analysis, and stability regimes of pipes conveying fluid restrained by elastic or inelastic barriers are described. The dynamic and stability behaviors of pinned-pinned, clamped-clamped, and cantilevered pipes conveying fluid together with curved and articulated pipes will be discussed.R.-D. Bao's research works Shenyang University of Stability of Cracked Fluid Conveying Pipeline on Elastic R.-D. Bao's 8 research works with 4 citations and 92 reads, including Nonlinear dynamic characteristics of a cracked pipe conveying fluid under two-end elastic supports

Some results are removed in response to a notice of local law requirement. For more information, please see here.Some results are removed in response to a notice of local law requirement. For more information, please see here.On the Dynamic Stability of Fluid-Conveying Pipes Stability of Cracked Fluid Conveying Pipeline on Elastic

This paper presents a general analysis of the dynamic stability of a finite-length, fluid-conveying pipe. The Flu¨gge-Kempner equation is used in conjunction with classical potential theory so that circumferential modes as well as the usual beam modes may be considered. The cylinders are found to become unstable statically at first but flutter is predicted for higher velocities.Stability Analysis of Multispan Pipeline Embedded in Stability of Cracked Fluid Conveying Pipeline on Elastic Elaikh et al. researched the dynamic behavior of cracked functionally graded material (FGM) pipe-conveying fluid . Wang and Liu discussed the transverse vibration of FGM pipe-conveying fluid . The temperature change of the system is a key factor in the stability analysis of the pipeline.

Stability Analysis of Pipe Conveying Fluid Stiffened by Stability of Cracked Fluid Conveying Pipeline on Elastic

Stability analysis of pipe conveying fluid with internal flow is studied in this paper. Finite Element Analysis is used to study the dynamic analysis of pipe conveying fluid stiffened by linear spring. Several effective parameters play an important role in stabilizes the system, such as stiffness addition.Stability of Cracked Fluid-Conveying Pipeline on Elastic Stability of Cracked Fluid Conveying Pipeline on Elastic The effects of crack location and elastic foundation stiffness to the form of instability of the pipes under the distributed follower force are analyzed. Results show that the elastic foundation stiffness can enforce the stability of the pipes effectively, and the effects are more obvious when the crack location is closer to the middle of the pipe.Vibration and dynamic stability of pipes conveying fluid Stability of Cracked Fluid Conveying Pipeline on Elastic Abstract. The paper deals with the vibration and dynamic stability of cantilevered pipes conveying fluid on elastic foundations. The relationship between the eigenvalue branches and corresponding unstable modes associated with the flutter of the pipe is thoroughly investigated.

Vibration characteristics of hydraulic excitation system Stability of Cracked Fluid Conveying Pipeline on Elastic

To reveal vibration characteristics of hydraulic excitation system based on the fluid-filled pipe, a hydraulic excitation testing system is developed, which mainly consist of an elastic plate conne Stability of Cracked Fluid Conveying Pipeline on Elastic [1708.01943] Stability of helical tubes conveying fluidAug 06, 2017We study the linear stability of elastic collapsible tubes conveying fluid, when the equilibrium configuration of the tube is helical. A particular case of such tubes, commonly encountered in applications, is represented by quarter- or semi-circular tubular joints used at pipe's turning points. The stability theory for pipes with non-straight equilibrium configurations, especially for Stability of Cracked Fluid Conveying Pipeline on Elastic

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