Study of stressed-deformed state of rubber cable in the area of tubular transformation

Belmas, Ivan; Kolosov, Dmitrii; Kolosov, A. E.

doi:10.15593/2224-9923/2014.12.6

Cited by 4 publications

(6 citation statements)

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“…It protects the cables from the influence of external environment, the interaction with the material being transported and elements of the machine it is installed on. The issue of a strainstrain state of a flat rope in the part where a flat rope gets a tubular shape was investigated in the paper [19]. There are no guidelines for calculating a rope and limits of their application.…”

Section: State Of Question and Research Problemmentioning

confidence: 99%

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Stress-Strain State of Flexible Composite Tractive Element With Cable Breakages at Tubular-Shaped and Transitional Areas

Belmas¹,

Kolosov²,

Samusia³

et al. 2022

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The purpose of research is establishment of dependencies of the stress-strain state of a rubber-cable rope on its mechanical parameters and geometric parameters of a part where a flat rope gets a tubular shape considering the influence of a cable base breakage. Research methodology is construction of analytic models of interaction of cables in a rubber-cable rope as a composite structure, created from parallel cables regularly placed in one plane that interact through a layer of rubber, using the methods of mechanics of composite materials. Obtaining analytical dependencies in closed form for establishing the parameters of a stress-strain state of a rope in a part where it gets a tubular shape, which allows determining upper and lower boundaries of stresses in cables and in a rubber layer of a rope. Mathematical formulation of the process is based on the principles of mechanics of layered structures with hard and soft layers. Mathematical models were developed and investigated, what allows defining the boundaries of a stress-strain state of a flat rubber-cable rope, which gets a spatial shape of a cylinder. Obtained results allow predicting running abilities of a 436 rope with a high level of reliability including brakeages of its reinforcing cables. Scientific novelty is in obtained analytical dependencies for boundary values of rigidity characteristics of rubber inter-cable layer were obtained and solved what allows determining basic characteristics of a stress-strain state of the rope, which gets a shape of a pipe within the limited length including the case of a cable base breakage. Practical application of research is in the possibility to determine the boundaries of a stress-strain state of a rope, prediction of its stress state in case of cable breakage during operation, allows reasonable choosing of parameters of lifting and transporting machines, on which the rope gets a tubular shape. This increases the level of their operation safety and contributes to solving the problem of ecological compatibility of underwater oil extraction by removing the oil from the area of the well damage directly through the rope cavity, which gets a cylinder shape and which has a massive oil-receiving unit attached

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Section: State Of Question and Research Problemmentioning

confidence: 99%

“…Considering the generally accepted assumptions concerning the character of deformation of rubber-cable rope components as a composite material with significantly different moduli of elasticity of its components [19] and boundary conditions (2), accept the following forms of solutions…”

Section: Assumed Forms Of Solutionsmentioning

confidence: 99%

Stress-Strain State of Flexible Composite Tractive Element With Cable Breakages at Tubular-Shaped and Transitional Areas

Belmas¹,

Kolosov²,

Samusia³

et al. 2022

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“…Coefficient 1 is assumed zero. Then c2=u1(i,0), (1iM) Expressions of displacement ( 6), (7) include unknown vectors of displacements with values N+M-1 and M-1. In order to reduce the number of vectors of unknown constants, the first (M-1) constants of a vector B1,m are expressed through unknown constant B2,n.…”

Section: Belt With Regular Ruptures Of Continuity Of Cable Groupsmentioning

confidence: 99%

Design-Induced Operational Changes of Stress-Strain State in Flat Rubber-Cable Tractive Element of Hoisting and Transporting Machine

Kolosov¹,

Samusia²,

Bilous³

et al. 2022

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Main indicators of a stress-strain state (SSS) of a rubber-cable belt, the rubbercable rope for a random placement pattern and the size of the part with broken cables, including partially removed cables, with cable breakages and their random 215 amount, different conditions of belt interaction in its cross-sections of connection to structural elements of a conveyor and a lifting machine to ensure control of its tractive ability during the life cycle. Performed researches clarify the idea of the interaction mechanism of reinforcing elements in composite materials of layered structure with hard and soft layers. Obtained results can be used for development and justification of a unified technology of creation and engineering support of operation of lifting and transporting machines with flat tractive-bearing elements with increased life-span, level of efficiency and operational safety in systems of extraction, transportation and processing of minerals.

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“…It protects the cables from the influence of external environment, the interaction with the material being transported and elements of the machine it is installed on. The issue of a stress-strain state of a flat rope in the part where a flat rope gets a tubular shape was investigated in the paper [19]. There are no guidelines for calculating a rope and limits of their application.…”

mentioning

confidence: 99%

“…Considering the generally accepted assumptions concerning the character of deformation of rubber-ca-ble rope components as a composite material with significantly different moduli of elasticity of its components [19]…”

mentioning

confidence: 99%

Stress-strain state of rubber-cable tractive element of tubular shape

Belmas¹,

Kolosov²,

Onyshchenko³

2018

SBNMU

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Purpose. Establishment of dependencies of the stress-strain state of a rubber-cable rope on its mechanical parameters and geometric parameters of a part where a flat rope gets a tubular shape considering the influence of a cable base breakage. methodology. Construction of analytic models of interaction of cables within a rubber-cable rope as a composite structure, created from parallel cables regularly placed in one plane that interact through a layer of rubber, using the methods of mechanics of composite materials. Obtaining analytical dependencies in closed form for establishing the parameters of a stress-strain state of a rope in a part where it gets a tubular shape, which allows determining upper and lower boundaries of stresses in cables and in a rubber layer of a rope. Mathematical formulation of the process is based on the principles of mechanics of layered structures with hard and soft layers. findings. Two mathematical models were developed and investigated, which allows defining the boundaries of a stress-strain state of a flat rubber-cable rope which gets a spatial shape of a cylinder. Obtained results allow predicting running abilities of a rope with a high level of reliability including brakeages of its reinforcing cables. originality. Analytical dependencies for boundary values of rigidity characteristics of a rubber inter-cable layer were obtained and solved, which allows determining basic characteristics of a stress-strain state of the rope, which gets a shape of a pipe within the limited length including the case of a cable base breakage. Practical value. The possibility to determine the boundaries of a stress-strain state of a rope, prediction of its stress state in case of cable breakage during operation, allows reasonable choosing of the parameters of lifting and transporting machines, on which the rope gets a tubular shape. This increases the level of their operation safety and contributes to solving the problem of ecological compatibility of underwater oil extraction by removing the oil from the area of the well damage directly through the rope cavity, which gets a cylinder shape and which has a massive oil-receiving unit attached.

show abstract

Study of stressed-deformed state of rubber cable in the area of tubular transformation

Cited by 4 publications

References 0 publications

Stress-Strain State of Flexible Composite Tractive Element With Cable Breakages at Tubular-Shaped and Transitional Areas

Stress-Strain State of Flexible Composite Tractive Element With Cable Breakages at Tubular-Shaped and Transitional Areas

Design-Induced Operational Changes of Stress-Strain State in Flat Rubber-Cable Tractive Element of Hoisting and Transporting Machine

Stress-strain state of rubber-cable tractive element of tubular shape

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