Keywords: pipe, load, stress, deformation, holding capacity, cartridge, clamp, paper gauge


Due to the fact that clamping devices are widely used in various industries, the requirements for the operation of such devices are constantly increasing. This is due to an increase in the general requirements for processing accuracy, as well as an increase in the forces acting on the clamped part. The reliability of these devices when working with thin-walled cylindrical parts is of great importance.

Thin-walled cylinders used in mechanical engineering are subject to significant loads. With prolonged exposure to loads from clamping forces, as well as from axial tensile forces, plastic deformations of cylindrical parts occur. In the oil and gas industry, when clamping drill and casing pipes in some areas in the capture zone, stresses exceed the yield strength. Multiple clamping of the pipe will reduce the pipe wall in the gripping area, which causes premature pipe failure. Therefore, increasing the holding capacity of clamping mechanisms is relevant.

Analysis of broken drill pipes, which have been operating in wedge grips for a long time, showed that in most cases the pipes undergo plastic deformation caused by damage to the pipe surface by the teeth of the ram. To clarify the actual conditions of loading the pipe and the possibilities of increasing the capacity of the clamping devices, studies of the contact pressures in the clamping zone were carried out.

A new pipe clamping chuck is also presented, which provides a sufficiently high reliability of fastening of cylindrical parts.


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Author Biographies

Emin Musa Afandiyev, Azerbaijan State Economic University (UNEC)

Department of Industrial engineering

Mahammadali Nuraddin Nuriyev , Azerbaijan State Economic University (UNEC)

Department of Industrial engineering


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How to Cite
Afandiyev, E. M., & Nuriyev , M. N. (2021). ANALYSIS OF THE CONDITION OF A PIPE FIXED IN A CLAMPING DEVICE. EUREKA: Physics and Engineering, (1), 78-85.

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