Analytical Model of Structural Damping in Friction Module of Shell Shock Absorber Connected to Spring

Shatskyi, Ivan; Velychkovych, Andrii

doi:10.1155/2023/4140583

Cited by 3 publications

(3 citation statements)

References 84 publications

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“…In papers [44,45], a quasi-static approach to the problems of dynamic deformation of shells partially filled with an elastic filler was implemented, and in articles [46,47], modal analysis and parametric optimization of such systems were carried out.…”

Section: Introductionmentioning

confidence: 99%

The Inertial Disturbances of Fluid Movement in the Chamber of a Liquid Autobalancer

Lozynskyi,

Shihab,

Drach

et al. 2024

Machines

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This article analyses the problem of automatic balancing rotors with a liquid balancer, which is a cylindrical chamber partially filled liquid of a certain density. This problem is related to the problem of the dynamics of bodies with cavities partially filled with liquid. As part of this task, we analyzed disturbances in the relative motion of the fluid in the ABD chamber caused by the Coriolis force inertia. The distortions of the free surface of the liquid were found, resonant phenomena in the flow of the working fluid were investigated, and the physical explanation of the received results given should be taken into account when designing the corresponding ones self-balancing devices. It was established that the axial component of the Coriolis inertial force causes peculiar wave phenomena in the correcting fluid movement. For the given nature of undisturbed motion, the conditions of this phenomenon’s occurrence are determined only by the geometric dimensions of the cylindrical chamber and the thickness of the liquid layer in undisturbed motion, and do not depend on the intensity of rotation of the liquid, nor on its density. It is shown that a decrease in the “ABD chamber height–radius” ratio leads to stabilization of the movement of the system. Experimental verification has been performed; theoretical results on the developed stand for work research rotor system with a vertical axis of rotation.

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Section: Introductionmentioning

confidence: 99%

The Inertial Disturbances of Fluid Movement in the Chamber of a Liquid Autobalancer

Lozynskyi,

Shihab,

Drach

et al. 2024

Machines

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“…[17][18][19][20]. The demand for such research regularly arises in such areas as the construction and operation of oil and gas wells [21,22], the design of pipelines in karst zones [23] and areas of increased seismic activity [24], the construction of support columns [25], the sinking of construction piles [26], rational design of anti-vibration, and damping devices for long-dimension objects [27,28], etc.…”

Section: Introductionmentioning

confidence: 99%

Analytical Model of Interaction of an Oil Pipeline with a Support of an Overpass Built in a Mountainous Area

et al. 2023

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Today, pipelines are the safest and most economical way to transport petroleum products and one of the key components of modern energy infrastructure. Nevertheless, pipeline systems are associated with certain risks that can lead to environmental disasters. The idea of carrying out this study was initiated by the results of the survey of the overpasses of the long-used oil pipelines laid in the mountainous area of the Carpathian region. Defects such as a change in the shape of the pipe and local bulges in the area of oil pipeline support nodes were detected. The explanation of the described problem is separate from the typical algorithms of design calculations, which are offered to manufacturers by current directive documents. The desire to provide an explanation and quantitative assessment of the detected defects became the main motivation for writing the article. An analytical model of the interaction of the oil pipeline with the rigid support has been developed. Additional internal loads in the cross-section of the pipe and displacement of its middle surface, which arise as a result of such interaction, are determined. The method of determining the reaction in the intermediate support of the overpass of the oil pipeline has been developed, considering the properties of the soil base in the underground sections and the mounting gap in the support node. The analytical dependence was obtained to determine the additional hoop stresses that arise in the oil pipeline due to the contact of the pipe with the support. The unambiguous relationship between the maximum additional hoop stress and the reaction in the support node was established. The dependence of additional hoop stresses on the geometric characteristics of the pipes was analyzed. The obtained research results are tested on the real structure of the overpass of the Druzhba oil pipeline, built in the Carpathians. In general, a simple engineering technique has been developed that allows analyzing the behavior of the oil pipeline support node and provides the numerical correction to the traditional strength assessment formulas, which determine the equivalent stresses in the oil pipeline.

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“…• use of vibration-proof drill string arrangement [55,56]; • dynamic vibration dampers [57], specialized dampers [58][59][60], or installation of drilling shock absorbers [61] above drill bits.…”

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confidence: 99%

An Analytical–Numerical Model for Determining “Drill String–Wellbore” Frictional Interaction Forces

Bembenek,

Grydzhuk,

Gajdzik

et al. 2024

Energies

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Currently, drilling of directional oil and gas wells under complex technical-technological and mining-geological conditions requires the use of drill pipes made of various materials. In turn, to choose rational modes of strengthening drill pipes and drill string layouts, information on the contact forces and friction forces of the drill string pipes on boreholes is necessary. Drill pipe curved sections friction with boreholes and drill bit resistance moment changes are the main causes of uneven rotation of a drill string during rotary or combined drilling methods and the occurrence of parametric oscillations. To reduce the cost of mechanical energy for well wiring, it is necessary to take into account the “drill string–borehole rocks” force interaction to estimate the magnitude of the frictional forces and their influence on the technological parameters of the drilling process. To solve this problem, mathematical models of “conventionally vertical and inclined drill string sections–borehole” were built. Based on the industrial data, an analysis of the force interaction of a deformed drill string composed of pipes made of different materials (aluminum, titanium, steel) was carried out. Analytical dependences were obtained for determining the contact forces and friction of the pipes on boreholes. A numerical study of the change of these power factors depending on the depth of the well under conditions of intensive vibration loading was carried out. The amplitude values of these forces, the frequency of their change for good sections, as well as the places for the most rational installation of drill pipes in the layout of the drill string were estimated. It was established that the intensity of contact and friction forces for steel drill pipes is greater than for titanium or aluminum ones. It is shown that the greater impact of a solid steel string on contact forces and frictional forces compared to a layout with sections of titanium or aluminum pipes in the range of vibration frequencies of 8–22 Hz corresponds to a bit rotation frequency of 70–80 rpm. The practical application of the obtained research results will contribute to the improvement of technical and economic indicators of the well drilling process.

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Analytical Model of Structural Damping in Friction Module of Shell Shock Absorber Connected to Spring

Cited by 3 publications

References 84 publications

The Inertial Disturbances of Fluid Movement in the Chamber of a Liquid Autobalancer

The Inertial Disturbances of Fluid Movement in the Chamber of a Liquid Autobalancer

Analytical Model of Interaction of an Oil Pipeline with a Support of an Overpass Built in a Mountainous Area

An Analytical–Numerical Model for Determining “Drill String–Wellbore” Frictional Interaction Forces

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