Y.Y. Knutova¹, Post graduate, Senior Lecturer of Department "Technology of mechanical engineering"
E-mail: knutovaee@mail.ru
Y.N. Tsypkin¹, Candidate of Engineering Sciences, associate professor, Chairman of Department "Technology of mechanical engineering" 
E-mail: entcypkin@yandex.ru
A.B. Klimov¹, Candidate of Engineering Sciences, associate professor of “Applied Informatics” 
E-mail: abxyz@rambler.ru
E.M. Berliner², Master of Engineering sciences, Professor of Department "Metal-cutting systems with CNC" 
E-mail: eberliner@yandex.ru
¹ Moscow State Industrial University, Branch in Kineshma, Ivanovo region
² Moscow State Industrial University

The article studies a typical scheme of the finishing of BK-100 technical ceramics plates. There has been proposed to solve the problem of low productivity of the diamond lapping by lapping disc upgrading. A positive effect of the designed lapping disc on the resulting quality parameters of the finishing surface has been established. A neural-network model of optimizing the dynamically changing parameters of finishing of technical ceramics plates has been developed.

Keywords: technical ceramics, diamond lapping, lapping disc, surface quality, neural-network model.

References

1. Bakharev V.P., Knutova Y.Y. Statistical Regularities of Ceramics Material Dispersion by Using Methods of Diamond Finishing. Physics, Chemistry and Tribosystems Mechanics: Intercollegiate Collection of Scientific Papers (edited by V. Latyshev). Ivanovo State University, 2010. Edition 9. –176 p. P. 41–48.
2. Bakharev V.P.   Fundamentals of the Designing and Managing Processes of Ceramics and Composite Materials Finishing. Ivanovo: Ivanovo State University, 2009 – 240 p.
3. Filimonov A.V. Structuring and Teaching Neuronets  Applied to Problems of Physical Chemistry and Medicine. Candidate's thesis in physical and matematical scients. – Ivanovo, 2004. – 80 p.
4. Klimov A.B. Forecasting Durability of Mineral and Ceramic Cutting Tool on the Basis of Neuronet Models of its Wear. Dissertation of Candidate of Engineering Sciences. 2006. – 125 p.
5. Knutova Ye.Ye. Certificate of State Registration for Computers №2013617580 Programme for the Modelling of the Finishing Process of Ceramic Products «SPFCP – 2013».

E.V. Lukyanenko¹, Chief of the research department Moscow state industrial university
E-mail: lev_2506@mail.ru
V.V. Ovchinnikov¹, Professor of the department “Materials Science and Technology of Structural Materials” 
E-mail: vikov1956@mail.ru
V.V. Istomin-Kastrovskiy², Leading researcher NUST "Moscow Institute of Steel and Alloys" 
E-mail:  istominv@mail.ru
Y.M. Borovin¹, Vice Rector for Strategic Development 
E-mail:  borovin@mail.ru
T.Y. Skakova¹, Associate professor of  the department  “Materials Science and Technology of  Structural Materials” 
E-mail: Tanya.skakova@mail.ru
¹ Moscow State Industrial University
² National Research Technological University (MISA), Moscow

The article shows that implanting parts from 30ХГСН2А steel with ions of monotectic copper and lead alloy, alloyed with Tin, signtly increases the wear resistance of parts used in aircraft. Electron-microscopic and diffraction analysis have shown that a multilevel hierarchical structure is formed in the surface layer after implantation. The main mechanism of formation of these structures is the diffusion and relaxation, which lead to the rise of internal stresses, both in the implanted layer itself and in the subsurface layer.

Keywords: 30ХГСН2А steel; ion implantation; monotectic alloy; contact alloying; implanted layer; wear resistance.

References

1. Ovchinnikov V.V. Kozlov D.A., Jakutina S.V., Nemov A.S. Influence of the implantation of  Copper and Lead Ions on Properties of 30HGSN2A Steel // Mechanical Engineering and Engineering Education. 2010. No. 4. Р. 38‒45.
2. Ovchinnikov V.V. Kozlov D.A., Jakutina S.V., Nemov A.S. Properties and Composition of the Surface of 30HGSN2A Steel Depending on the Dose of Irradiation with Copper and Lead Ions // Proceedings of the Moscow State Industrial University. 2010. No. 3. P. 15‒20.
3. Avraamov Yu.S., Shlapin A.D. Theoretical Foundations, Technology and Properties of Immiscible Alloys Components: a Tutorial. ‒ Moscow: MSIU, 2002. – 376 p.
4. Avraamov Yu.S., Kravchenkov A.N., Korolyov S.Yu., Lukyanenko E.V., Ovchinnikov V.V., Shlapin A.D.  Obtaining a High-Tech Materials on the Basis of a System of Immiscible Cu-Pb Components for Manufacturing Cathode Ion Implantera // High Tech. in Mechanical Engineering. 2012. No. 3. P. 44‒48.

S.G. Ponomarev¹,  Leading Researcher of  Department of  Science Research
E-mail: psgpsg1@ya.ru
V.V. Rybalchenko¹,  Director of the center «High technologies in mechanical engineering» 
E-mail: vvr_01@mail.ru
¹ Moscow State Industrial University

The article deals with the physical model of electrical pulse alloying in Cu-Pb system. Two possible development scenarios of this alloying are considered. The monotectic reactions of solid-liquid transformation of Cu-Pb play the major part in first scenario. The adiabatic shear bands take the lead in second case. It has been shown that the initial Pb quantity and electrical pulse duration determine the choice of one of the two interaction scenario. This knowledge gives the ability to operate the process of contact alloying.

Keywords: monotectic reactions, adiabatic shear band, solid-liquid transformation, contact alloying.

References

1. Koshkin V.I., Kravchenkov A.N., Nizhnik V.A., Rudenko I.B., RybalchenkoV.V., Shlyapin A.D. Structural Transformations in the Contact Area of Al–Pb and Fe–Pb Metals Exposed to the Electro-Impulse Action// Mechanical Industry and Engineering Education. 2012. No. 1. P. 23–27.
2. Rudenko I.B. Electrical-Pulse Alloying of Ferrum with the High-Density Fusible Elements // Mechanical Industry and Engineering Education. 2012. No 1. P. 27–33.
3. Martyushev N.V. Crystallizing of Lead Bronzes. Tomsk, TSU 2011. – 120 p.
4. Avraamov Yu.S., Shlyapin A.D. Alloys on the Basis of Systems with Limited Solubility in Fluidity. M.: Interscience, 2002. – 372 p.

A.A. Potapova¹, Researcher of Institute of Machines Science named after A.A. Blagonravov of the Russian Academy of Science
E-mail:  ls3216@yandex.ru
V.V. Stolyarov¹, Sc.D. (Engineering), Professor, Chief researcher of Machines Science named after A.A. Blagonravov of the Russian Academy of Science
E-mail: vlstol@mail.ru
¹ Institute of Machines Science named after A.A. Blagonravov of the Russian Academy of Science

It was shown that rolling with electric current (e>1) with a post-deformation annealing at 450–500 °C leads to formation of nanostructure with grain size of 60–120 nm in TiNi binary alloys. It also leads to improvement of TiNi alloy functional properties. For example, the deformation reverse coefficient proved to be better in comparison with the undeformed state of the alloy (90-96% for Ti_49,2Ni_50,8   alloy and 75-80% for Ti_50,0Ni_50,0 alloy). In the Ti_50,0Ni_50,0 alloy subjected to rolling with electric current the superelasticity effect, which is not observed in undeformed state, has been found.

Keywords: rolling with electric current, TiNi alloy, reverse coefficient, superelasticity effect, shape memory effect.

References

1. Prokoshkin S.D., Brailovski V., Khmelevskaya I.Yu., Inaekyan K.E., Demers V., Dobatkin S.V., Tatyanin E.V. Structure and Properties of Severely Cold-Rolled and Annealed Ti-Ni Shape Memory Alloys // Mater. Sci. Eng. 2008. Vol. 481‒482. P. 114‒118.
2. Tsuchiya K., Inuzuka M., Tomus D., Hosokawa A. Martensitic Transformation in Nanostructured TiNi Shape Memory Alloy Formed Via Severe Plastic Deformation  // Mater. Sci. Eng. 2006. Vol. 438–440. P. 643‒648.
3. Stolyarov V. Nanostructured Shape Memory TiNi Alloy Processed by Severe Electroplastic Deformation // Materials Science Forum. 2008. Vol. 584‒586. P. 507‒512.
4. Potapova A.A., Stolyarov V.V.  Deformability and Structural Features of Shape Memory TiNi Alloys Processed by Rolling with Current // Mater. Sci. Eng. 2013. Vol. 579. P. 114‒117.
5. Gunther V.E.  Nickel Titanium. Medical Material of New Generation. – Tomsk: MEC, 2006. – 296 pp.
6. Ootsuka, K. Alloys with Shape Memory Effect / translated from Japan. – M: Metallurgy, 1990. – 224 pp.

A.V. Goroshko¹, Assistant professor of physics and electrical engineering department
E-mail: iftomm@ukr.net
V.P. Royzman¹, Professor of Department of Mechanical Engineering 
E-mail: royzman_V@mail.ru
¹ Khmelnitsky National University (Ukraine)

The paper studies the dynamics of the THA-150 turbopump assembly which  has increased rotor vibration and displays the efficiency of the application in practice of formulating and solving inverse problems of dynamics, as well as overcoming the difficulties in solving such problems.

In particular, there has been posed and solved the inverse problem of searching for valid values for eccentricities in order to provide specified in TU value of support reactions at 300 N for subsequent balancing on low speed balancing machines. The solution of the problem has shown that the bulk of the required eccentricities of rotor should not exceed 0.0008 mm, which is not achievable in practice, i.e. in the prior art there is no solution of the problem.

There has been studies the dynamics of the TNA rotor at the working frequencies and implemented parametric identification of eccentricities, stiffness, mass, referred to a mathematical model describing the rotor. To increase the accuracy of identification statistical method for increasing the stability of inverse problems solutions has been used.

Keywords: vibration imbalance, turbopump unit, identification, inverse problem, frequency response, balancing.

References

1. Gurov A.F. Joint Fluctuations in Gas Turbine Engines. M. Oborongiz, 1962 – 142 p.
2. Goldin A.S. Balancing Multisupporting Shafting under Power // Theory and Practice of Balancing Machines and Devices / Ed. V.A. Schepetilnikova. M.: Engineering, 1970. P. 177–184.
3. Goroshko A. State the Problem of Providing High Quality Structural Design of Complex Engineering Products and Processes for their Manufacture / A.V. Goroshko, V.P. Royzman // Journal of Khmelnitsky National University. 2012. No. 5. P. 59-68.
4. Isaev R.I., Royzman V.P. Experimental Investigation of the Stiffness of the Rotor of Compressors of AI-20 Engine. Technical Reference Number 5186. CIAM, 1961. D.s.p.
5. Royzman V., Goroshko A.. Multiple Inverse Problem. – Journal Of Vibroengineering. September 2012. Vol. 14. Iss. 3. P. 1417–1424.
6. Feodosyev V.I. Strength of Materials: Textbook for Universities. – 10th edition, revised. and add. – Moscow: Publishing House of the MSTU. Bauman, 1999. – 592 p.
7. Goroshko A. Ways to Improve the Accuracy of Inverse Problems Solutions / A.V. Goroshko, V.P. Royzman // Journal of Khmelnitsky National University. 2013. No. 6. P. 60–69.

A.M. Lipanov¹, Academician of the Russian Academy of Sciences, chief Researcher «Thermal deformation processes»
E-mail: lipanov1935@mail.ru
S.S. Makarov¹, Head of the Laboratory «Thermodeformational processes» Institute of Mechanics 
E-mail: ssmak15@mail.ru
¹ Institute of Mechanics, Ural Branch of the Russian Academy of Sciences

The paper considers the construction of a mathematical model for cooling solid cylinder in order to study unsteady heat transfer in high-temperature metal bodies in longitudinal quasi-stationary flows of water and air. It includes a mathematical model and numerical algorithm, as well as the results of calculations of parameters of heat transfer and fluid flow of the cylinder depending on the geometry, thermal properties and process time. The verification of the numerical solution of the problem has been performed.

Keywords: mathematical model, cooling, cylinder, heat transfer parameters, airflow, water flow, numerical calculation.

References

1. Lipanov A.M., Makarov S.S. Numerical Solution for the High-Temperature Solid Metal Cylinder // Mechanical Engineering and Engineering Education. 2012. No. 4. P. 33–40.
2. Novozhilov B.V. Unsteady Burning of Solid Rocket Fuels. – Moscow: Nauka, 1973. – 175 p.
3. Yudaev B.N. Heat Transfer in the Interaction of the Jets with Obstacles. – Mashinostroenie, 1977. – 247 p.
4. Vukalovich M.P. Thermophysical Properties of Water and Steam. – Mashinostroenie, 1967. – 160 p.
5. Steels and Alloys. Grade list. / Ed. Sorokin, VG, MA Gervaseva. – Moscow: Intermet Engineering, 2001. – 608 p.
6. Podkustov V.P. Alexeev P.L. Determination of the Temperature Field of Rolled Products / Izvestiya vuzob. Chernaya Metallurgy, 1999. No. 9. P. 40–42.

N.S. Pakhalina^1,2, the student, technician
E-mail: pakhalina-09@yandex.ru
E.М. Morozov¹, the doctor of technical Sciences, Professor
E-mail: evgeny-morozov@mtu-net.ru
Y.G. Matvienko², the doctor of technical Sciences, Professor
E-mail: matvienko7@yahoo.com
¹ National research nuclear University ‘MEPHI’
² Institute of Machines Science named after A.A. Blagonravov of the Russian Academy of Sciences

One of the least researched questions of the fracture process is calculation of the directions along which a crack grows. This paper deals with the applicability of the variational method to determine the development of cracks in the ground around the well bore under pressure. The task is axisymmetrical, and at the specified depth a crack takes the form of the open ‘umbrella’, whose trail crossing the vertical median plane is to be defined. Euler-Lagrange equation of corresponding function is solved numerically using the custom package Mathematics. There have been received crack trajectories for a number of boundary conditions.

Keywords: trajectory of the crack, well bore, Lagrange’s equation, variational method.

References

1. Friedman Ya.B., Morozov E.M. Trajectory of Cracks of Fragile Destruction as a Geodesic Lines on the Surface of the Body //  Dokl. AS USSR. 1961. Vol. 139. No. 1. P. 87–90.
2. Kirzhanov D., Matvienko Yu.G., Morozov E.M. Comparing Variational Criteria Used to Predict the Path of a Crack. In: Proceeding of 18th ECF "Fracture of Materials and Structures from Micro to Macro Scale, 30 Aug. – 3 Sept. 2010, Dresden, Germany,  P. 1–8.
3. Morozov E.M.  Is It Possible to Find the Trajectory of a Crack as a Whole // The World Community: Problems and Solutions. 2001. No. 11. P. 27–38.
4. Parton V.Z., Morozov E.M. Mechanics of Elastic-Plastic Fracture. – M: Nauka, 1985. – 504 p.

K.A. Tikhomirova¹, Master's Degree student of Department “Computational Mathematics and Mechanics”
Email: kse-tikh@yandex.ru
N.A. Trufanov¹, doctor of technical sciences, professor, head of Department “Computational Mathematics and Mechanics” 
Email: nat@pstu.ru
¹ Perm National Research Polytechnic University

The paper discusses the problem of the thermomechanical loading of axially compressed rod, which is a generalization of Euler’s elastic task in case of the glassy material. The constitutive relations describing the thermomechanical behavior of amorphous polymers over a wide temperature range are used. To determine the material parameters a series of thermomechanical experiments for lightly-linked epoxy specimens has been conducted. Post-buckled states of equilibrium of epoxy rod during the temperature change are found.

Keywords: glass transition, thermomechanics, post-buckled state of equilibrium, Euler’s elastic, shape memory polymers.

References

1. Shardakov I.N., Trufanov N.A., Begishev V.P., Shadrin O.A., Smetannikov O.Ju. Description of Hereditary Effects at Glass Transition and Fluxing Epoxy Components // Plastic Masses. 1991. No. 9. P. 55–58.
2. Matveenko V.P., Smetannikov O.Yu., Trufanov N.A., Shardakov I.N. Models of Thermomechanical Behavior of Polymeric Materials Undergoing Glass Transition // Acta Mech. 2012. Vol. 223. No. 6. P. 1261–1284.
3. Matveenko V.P., Smetannikov O.Ju., Trufanov N.A., Shardakov I.N. Thermomechanics of Polymer Materials under Relaxation Transition. – M.: Fizmatlit, 2009. – 176 p.
4. Sharifi S., van Kooten T.G., Kranenburg H.-J.C. et al. An Annulus Fibrosus Closure Device Based on a Biodegradable Shape-Memory Polymer Network // Biomaterials. 2013. Vol. 34. No. 33. P. 8105–8113.
5. Yakacki C.M., Shandas R., Lanning C. et al. Unconstrained Recovery Characterization of Shape-Memory Polymer Networks for Cardiovascular Applications // Biomaterials. 2007. Vol. 28. No. 14. P. 2255–2263.
6. Rabotnov Ju.N. Mechanics of Defermed Solid Body. M.: Nauka, 1988. – 712 p.
7. Vol'mir A.S. Deformed Systems Resistance. – M.: Nauka, 1967. – 984 p.
8. Krylov A.N. Upon the Equilibrity States of Compressed  Struts At Longitudinal Bending // Izvestija Akademii nauk USSR. VII series. Department of Mathematical and Natural Sciences. 1931. No. 7. P. 963–1012.
9. Bronshteyn I.N., Semendyaev K.A. Mathematics Reference Book for  Engineers and Students of Higher Technical Institutes. – M.: Nauka, 1986. – 544 p.