ISSN 1991-2927
 

ACP № 1 (59) 2020

Author: "Yury Nikolaevich Sankin"

Yury Nikolaevich Sankin, Ulyanovsk State Technical University, Doctor of Engineering, Professor; graduated from the Faculty of Electromechanics at Leningrad Polytechnic Institute; Professor of the Theoretical and Applied Mechanics Chair at Ulyanovsk State Technical University; author of monograph and articles in the field of machine tool dynamics [e-mail: sankin66@mail.ru]Y. Sankin

Turning Machine Stability At Nonlinear Criterion of Cutting Process 31_5.pdf

The article deals with an issue of maximum turning machines stability at cutting. It offers a frequency criterion of stability for a nonlinear closed loop system composed of a viscous-elastic linkage with distributed constants.

Machine tool dynamics, amplitude-phase-frequency characteristic, machine tool dynamic characteristic.

2013_ 1

Sections: Mathematical modeling, calculi of approximations and software systems

Subjects: Mathematical modeling.


Yury Nikolaevich Sankin, Ulyanovsk State Technical University, Doctor of Engineering, graduated from the Faculty of Physics and Mechanics of Leningrad Polytechnic Institute; Professor at the Chair 'Theoretical and Applied Mechanics'; author of monographs and articles in the field of theory of vibrations and stability of motion [e-mail: yns@ulstu.ru]Y. Sankin,

Sergey Marselevich Manzulin, Ulyanovsk State Technical University, graduated from the Institute of Aviation Technology and Management of Ulyanovsk State Technical University; post-graduate student at the Chair ''Theoretical and Applied Mechanics'; author of papers in the field of theory of form bending [e-mail: seregama@mail.ru]S. Manzulin

A Way of Defining Constantsfor Blanking Time During Cold Stamping 27_3.pdf

The paper is devoted to the solution of a task consisted in avoiding rejects during manufacture of parts by means of drawing-out by selecting a constant value for blanking time. The authors suggest a way of defining constants for blanking time during cold stamping, enabling the assignment of manufacturing processes, excluding rejects during manufacture of parts by means of drawing-out.

Draw-out of sheet articles, constants for blanking time during cold stamping, first-type four-element viscoelastic model.

2012_ 1

Sections: Mathematical modeling, calculi of approximationsandsoftware systems

Subjects: Mathematical modeling.


Yury Nikolaevich Sankin, Ulyanovsk State Technical University, Doctor of Engineering, Professor; graduated from the Faculty of Physics and Mechanics of Leningrad Polytechnic Institute; Professor at the Chair Theoretical and Applied Mechanics at Ulyanovsk State Technical University; author of monographs and articles in the field of theory of vibrations and stability of motion. [e-mail: yns@ulstu.ru]Y. Sankin,

Kirill Vladimirovich Oleynikov, Ulyanovsk State Technical University, [e-mail: o-kirill87@ya.ru]K. Oleynikov

Frequency Method in Problem of Wing Flutter in Subsonic Gas Flow 25_4.pdf

The paper is devoted to a problem of flutter of flexural-and-torsional vibrations of outer wing of uniform section and its divergence. As the considered problem is linear, the solution can be reduced to the analysis of proper values of ordinary differential equations. This problem can be actually solved by the Bubnov-Galerkin method or the finite-element method when flexural vibrations are approximated by 3rd-degree polynomial, torsional ones are approximated by 1st-degree polynomial. The present approach results in a high-level system and requires a lot of computer time.

Wing flutter, subsonic flow, frequency method.

2011_ 3

Sections: Mathematical modeling, calculi of approximations and software systems

Subjects: Mathematical modeling.


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