Numerical study of the stress-strain state of threaded pipe joints

1987 ◽  
Vol 19 (11) ◽  
pp. 1567-1570
Author(s):  
N. V. Kokhanenko ◽  
Yu. V. Kokhanenko ◽  
Z. P. Ordynskaya
Keyword(s):  
Strain State ◽  
Numerical Study ◽  
Stress Strain ◽  
Stress Strain State ◽  
Pipe Joints

Numerical study of the stress-strain state of filter dams weakened by low-strength inclusions

1987 ◽  
Vol 23 (8) ◽  
pp. 760-765
Author(s):  
V. V. Skopetskii ◽  
V. S. Deineka ◽  
S. I. Rybachishin
Keyword(s):  
Strain State ◽  
Numerical Study ◽  
Stress Strain ◽  
Stress Strain State ◽  
Low Strength

Numerical study of the stress-strain state of the thermal insulating sections of a column of steam delivery pipes

1992 ◽  
Vol 24 (5) ◽  
pp. 347-351
Author(s):  
Yu. N. Shevchenko ◽  
M. E. Babeshko ◽  
V. I. Gololobov
Keyword(s):  
Strain State ◽  
Numerical Study ◽  
Stress Strain ◽  
Stress Strain State ◽  
Thermal Insulating

scholarly journals A NUMERICAL STUDY OF STRESS-STRAIN STATE EVOLUTION IN STRUCTURALLY INHOMOGENEOUS MATERIALS SUBJECTED TO UNIAXIAL LOADING

2016 ◽  
Vol 3 ◽  
pp. 175-187 ◽  
Author(s):  
Sergey Smirnov ◽  
Anatoly Konovalov ◽  
Marina Myasnikova ◽  
Yury Khalevitsky ◽  
Alexander Smirnov
Keyword(s):  
Strain State ◽  
Numerical Study ◽  
Uniaxial Loading ◽  
Inhomogeneous Materials ◽  
Stress Strain ◽  
Stress Strain State ◽  
State Evolution

scholarly journals Numerical Study of Stress-Strain State of Workpiece in Contact Problem of Surface Mandrel Drilling

2021 ◽  
Vol 20 (3) ◽  
pp. 259-267
Author(s):  
N. S. Sivtsev ◽  
V. V. Tarasov
Keyword(s):  
Plastic Deformation ◽  
Friction Coefficient ◽  
Contact Interaction ◽  
Computational Experiment ◽  
Strain State ◽  
Numerical Study ◽  
Surface Plastic Deformation ◽  
Surface Plastic ◽  
Stress Strain ◽  
Stress Strain State

In recent years, the economic factor has played an increasingly important role in the selection of technologies for manufacturing machine parts with specified values of normalized parameters of geometric accuracy and quality of working surfaces. As applied to surface plastic deformation processes, this is noticeably manifested in the search for effective friction control methods in the “tool – workpiece” pair, which ultimately determines the distribution pattern and the magnitude of stresses and strains in the workpiece and the tool. It is not possible to obtain a rigorous analytical solution to the problem of establishing a connection between surface conditions, friction, and the stress-strain state of the contacted bodies. In this regard, the construction of mathematical models comes to the fore, the solution of which is possible by numerical methods. The paper presents the results of a numerical study (computational experiment) of a finite-element model of workpiece deformation under various conditions of contact interaction and friction by one of the methods of surface plastic deformation – surface mandrel drilling. The friction coefficient has been chosen as the criterion for assessing the conditions of contact interaction and friction. It is shown that a change in the friction coefficient in the process of surface mandrel has no noticeable effect on the formation of a stress field in the deformable workpiece both in the axial, and in the radial and circumferential directions. At the same time, with an increase in the value of the friction coefficient in the “tool – workpiece” pair and with the associated increase in the force of mechanical resistance to deformation of the workpiece, their growth is observed. A computational experiment has confirmed the presence of non-contact deformations of the workpiece and tool during surface mandrel drilling, as well as  as a decrease in the value of residual deformations in the workpiece with a decrease in the coefficient of friction. Balance assessment of contact surface displacements in the workpiece (the inner surface of the hole to be machined) and the tool (mandrel) has shown that the deformations of the tool in the elastic region can lead to a significant decrease in the real tightness of surface mandrel drilling.

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