Spatial Transverse Vibration Simulation Model of Axially Moving Sucker Rod String under the Excitation of Curved Borehole [PDF]
Shock and Vibration, 2020 The mechanical model of transverse vibration of sucker rod string (SRS) in directional well is simplified to the transverse vibration model of longitudinal and transverse curved beam with initial bending under borehole constraints. In this paper, besides
Hongbo Wang, Shimin Dong
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Eccentric Wear Mechanism and Centralizer Layout Design in 3D Curved Wellbores
Applied SciencesIn deep oil and gas wells, sucker rod strings (SRS) frequently experience breakage and eccentric wear problems. To address this engineering challenge, this study establishes a new coupled three-dimensional (3D) mechanical-mathematical model for sucker ...
Ziming Feng +3 more
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Dynamic instability of vibrations of thin-wall composite curvorine viscoelastic tubes under the influence of pulse pressure [PDF]
E3S Web of Conferences, 2020 In this paper the results of a study of the dynamic characteristics of thin-walled composite curved viscoelastic pipes under the influence of internal pulsating pressures is presented. The relationship between stress and strain is described by the Aviary
Mirsaidov Mirziyod +2 more
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Calculation of Backscattered Ultrasonic Waves Field from a Copper-clad Steel Rod Immersing in Water and Effect of Clad Corrosion and Interfacial Disbond between Clad and Rod Defects on this Field using the Finite Element Method [PDF]
Journal of Applied and Computational Mechanics, 2023 Inspection and specificity of the intactness of multi-layer and small-size parts like copper-clad steel rod is a hard task and requires high accuracy. The intactness of these parts is crucial due to their importance.
Omid Noormohammadi Arani +3 more
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Improving the Efficiency of Curved Wells’ Operation by Means of Progressive Cavity Pumps
Energies, 2022 This paper proposes a solution to the problem of improving the reliability of the operation of progressive cavity pump units in deviated and directional wells. High dogleg severity significantly contributes to rod breakage; rods often break close to the “
Anatoliy Andreevich Isaev +4 more
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Design of an esophageal deflection device for use during atrial ablation procedures
Journal of Materials Research and Technology, 2020 To prevent thermal damage of the esophagus during cardiac ablation surgery, a new device, named the esophageal deflection device (EDD), has been designed.
Karcher Morris +2 more
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Regularity of a Parabolic Differential Equation on Graphs
Mathematics, 2023 In this paper, motivated by a biodegradable stent problem, we consider a parabolic differential equation on graphs. This kind of equation describes the stent material degradation in time.
Bojan Žugec
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Jointing of thin elastic rods and generalized Kirchhoff conditions at nodes
Вестник КазНУ. Серия математика, механика, информатика, 2020 The paper presents various models of thin elastic curved rods and their joints. Such rods and their connections are important in applied research and have a long history.
B.E. Kanguzhin +2 more
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Case Studies in Thermal Engineering, 2022 In this article, latent heat thermal energy storage (LHTES) is analyzed for nano phase change material enclosed in a hexagonal triplex-tube with solidification acceleration. Optimized curve shape fins are adjusted inside the tube.
M. Alizadeh +6 more
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Conveyance of texture signals along a rat whisker
Scientific Reports, 2021 Neuronal activities underlying a percept are constrained by the physics of sensory signals. In the tactile sense such constraints are frictional stick–slip events, occurring, amongst other vibrotactile features, when tactile sensors are in contact with ...
Maysam Oladazimi +6 more
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