Inertia force effect on longitudinal vibrations of underground pipelines

Rahkmankulova, Barna; Mirzaev, Sayibdjan; Aynakulov, Sharafidin; Khusainov, R. B.; Khusainov, Saparboy

doi:10.1051/e3sconf/202126401007

Cited by 4 publications

(1 citation statement)

References 10 publications

(9 reference statements)

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“…The influence of the coefficients of elasticity and viscosity of the pipeline interaction at the contact with soil on the stress-strain state of the underground pipeline was studied in detail in [17][18]. In [19], the effect of inertia forces on the deformed state of an underground pipeline was studied. The effect of a seismic wave on an underground pipeline was considered in [20].…”

Section: Introductionmentioning

confidence: 99%

Longitudinal vibrations of underground pipelines of finite length in medium surrounded by soil with different properties along pipeline length

et al. 2023

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An analysis of the dynamic response of an underground main pipeline under a longitudinal wave propagating in soil along the pipe is given in the article. The problem of the longitudinal wave impact on a pipeline of finite length, interacting with soil according to the elastic-viscous law, is considered. The ends of the pipeline are fixed to massive nodes that interact with the medium according to linear laws. Along the length of the pipeline, the coefficients of the elastic and viscous pipeline-soil interaction change depending on the coordinate. In this article, the influence of the coefficients of elastic and viscous interaction of the "pipe-soil" system is studied when these coefficients are coordinate functions. The variability of the values of the coefficients along the length of the pipeline leads to a change in displacements from 0 to 15% and strain from 0 to 18%, compared with the case when these coefficients are constant. Depending on the length of the pipeline, the response of the pipeline to seismic action is different. This is especially evident at the boundary points. Considering the weight of nodes leads largely to a decrease in the strain of the pipeline relative to the soil strain at the boundary points.

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Section: Introductionmentioning

confidence: 99%

Longitudinal vibrations of underground pipelines of finite length in medium surrounded by soil with different properties along pipeline length

et al. 2023

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Seismodynamics of Underground Pipelines Under Viscous-Elastic-Plastic Interaction with Soil

Khusainov

Khusainova

2023

Soil Mech Found Eng

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Numerical solution of problem of longitudinal vibration of underground pipeline by the method of finite differences

et al. 2023

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This paper analyzes the dynamic response of a wave propagating to the soil horizontally through a pipe. That is, the state considers a linear viscoelastic model of the interaction of the "pipe-soil" system. This problem is solved using the numerical method of differential equations. The longitudinal wave in the ground is taken as a sinusoid. And also, in the article, we will compare the comparative analysis of the results for some values of the coefficients of elasticity and viscosity of taste, propagation velocity, and pulse duration. In the current flow of the "pipe-soil" system, reflections of waves propagating in an underground pipeline at the boundaries of the pipeline, usually propagating in soils. This leads to a change in the shape of the underground pipeline, the value of which can double. The viscosity coefficient of interaction at the "pipe-soil" system contact leads to attenuation of the wave front in the underground pipeline. For soils with values of viscous interaction coefficient more than 100 kN·s/m2, this may lead to complete attenuation of the bursts at the wave front in the pipeline. The ratio of steps along the coordinate and time equal to the propagation of waves in the pipeline, obtaining results that coincide with the exact nature.

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Inertia force effect on longitudinal vibrations of underground pipelines

Cited by 4 publications

References 10 publications

Longitudinal vibrations of underground pipelines of finite length in medium surrounded by soil with different properties along pipeline length

Longitudinal vibrations of underground pipelines of finite length in medium surrounded by soil with different properties along pipeline length

Seismodynamics of Underground Pipelines Under Viscous-Elastic-Plastic Interaction with Soil

Numerical solution of problem of longitudinal vibration of underground pipeline by the method of finite differences

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