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DESIGNING AND DETAILING OF BUILDING SYSTEMS. MECHANICS IN CIVIL ENGINEERING

RATIOS OF HARDNESS NUMBERS IN CALCULATIONS OF STATIC AND CYCLICAL STRENGTH OF STRUCTURAL TYPES OF STEELS

Vestnik MGSU 1/2013
  • Gustov Yuriy Ivanovich - Moscow State University of Civil Engineering (MGSU) Doctor of Technical Sciences, Professor, Department of Machinery, Machine Elements and Process Metallurgy, Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; +7 (499) 183-94-95; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Kurtenok Nikolay Prokof’evich - Moscow State University of Civil Engineering (MGSU) Associate Professor, Department of Mechanical Machinery, Details of Machines and Technology of Metals; +7 (499) 183-94-95, Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Voronina Irina Vladimirovna - Moscow State University of Civil Engineering (MGSU) Senior Lecturer, Department of Building and Hoisting Machinery, Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; +7 (499) 182-16-87; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Allattouf Hassan Lattouf - Moscow State University of Civil Engineering (MGSU) postgraduate student, Department of Mechanical Machin- ery, Details of Machines and Technology of Metals, Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 72-78

Results of calculations of values of static and cyclical strength of steels used in the structural design and based on the method of experimental and analytical coordination of hardness numbers are presented in the article. Strength measurements taken on the basis of the Rockwell method make it possible to research into the strength characteristics of small-size samples of steel in cases of restoration and inspection of the technical condition of the metalwork. Besides, the Rockwell method is universal and faster than the Brinell method.Thus, the availability of hardness values of small-size samples makes it possible to provide a definition of standard indicators of static and cyclical strength. Moreover, development of the definition of structural and power (synergetic) criteria of reliability of metalsusing the equation of relative strength turn into reality. The solution to this equation ofuniform plastic deformations of dmakes it possible to identify S , S , W , W values.р B K P C The initial experimental value of the hardness number may be used to calculate avariety of static and cyclical properties of steel and to identify the standard strength group and the approximate steel type counterpart.

DOI: 10.22227/1997-0935.2013.1.72-78

References
  1. Gulyaev A.P. Metallovedenie [Metallurgy]. Moscow, Metallurgiya Publ., 1986, 541 p.
  2. Fridman Ya.B. Mekhanicheskie svoystva metallov. Ch. 2. Konstruktsionnaya prochnost’ [Mechanical Properties of Metals. Part 2. Structural Strength]. Moscow, Mashinostroenie Publ., 1974, 368 p.
  3. Tylkin M.A. Spravochnik termista remontnoy sluzhby [Reference Book for a Heat Treater of Repair Services]. Moscow, Metallurgiya Publ., 1981, 647 p.
  4. Kolesnikov K.S., Balandin G.F., Dal’skiy A.M. Tekhnologicheskie osnovy obespecheniya kachestva mashin [Technology-related Fundamentals of Machinery Quality Assurance]. Moscow, Mashinostroenie Publ., 1990, 256 p.
  5. Gustov Yu.I., Allattuf H.L. Issledovanie sinergeticheskikh pokazateley vysokoprochnoy stroitel’noy stali 14Kh2GMR posle termicheskoy obrabotki [Research of Synergetic Properties of High-Strength Structural Steel 14x2gmr in the Aftermath of Exposure to Heat Treatment]. Vestnik MGSU [Proceedings of Moscow State University of Civil Engineering]. 2012, no. 6, pp. 79—82.
  6. Gustov Yu.I., Voronina I.V., Allattuf H.L. Issledovanie sinergeticheskikh pokazateley nadezhnosti maloperlitnoy stroitel’noy stali 09g2fb [Research of Synergetic Reliability of Pearlite-reduced Structural Steel 09g2fb]. Vestnik MGSU [Proceedings of Moscow State University of Civil Engineering]. 2012, no. 7, pp. 159—162.
  7. Arzamasov B.N., Solov’eva T.V., Gerasimov S.A. Spravochnik po konstruktsionnym materialam [Structural Materials Reference Book]. Moscow, MGTU im. N.E. Baumana Publ., 2005, 640 p.
  8. Akulov I.A., Alekseev E.K., Dmitriev I.S. Spravochnik po spetsial’nym rabotam. Svarochnye raboty v stroitel’stve. Ch. 1 [Reference Book on Special-purpose Works. Welding works in Construction. Part 1]. Moscow, Izdatel’stvo literatury po stroitel’stvu publ., 1971, 464 p.
  9. Babichev A.P., Babus hkina N.A., Bratkovskiy A.M. Fizicheskie velichiny: spravochnik [Physical Values. Reference Book]. Moscow, Energoatomizdat Publ., 1991, 1232 p.

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Research into interrelations between plasticity and hardness of standardstrength steel grades

Vestnik MGSU 3/2013
  • Gustov Yuriy Ivanovich - Moscow State University of Civil Engineering (MGSU) Doctor of Technical Sciences, Profes- sor, Department of Machinery, Machine Elements and Process Metallurgy; +7 (499) 183-94-95, Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Rus- sian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Voronina Irina Vladimirovna - Moscow State University of Civil Engineering (MGSU) Senior Lecturer, Department of Building and Hoisting Machinery, Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; +7 (499) 182-16-87; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Allattouf Hassan Latuf - Moscow State University of Civil Engineering (MGSU) postgraduate student, Department of Machinery, Machine Elements and Process Metallurgy, Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Rus- sian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 46-52

The objective of the study is research into interrelation between values of plasticity(d, y) and hardness (HB).Numerical values of hardness are insufficient to make accurate assessments of plasticity values. Meanwhile, hardness is the property identified using small-sized samples extracted from the metalwork of restored and reconstructed buildings. The most suitable method is the Rockwell one used to obtain HRB or HRC hardness values. However, these values maintain an analytical relationship neither with durability, nor with plasticity values. The difference between metal testing methods consists in their relation to dimensions: HRB and HRC values are dimensionless, while HB values are size dependent (kgf/mm2, or MPa). Therefore, the approach employed in this article can be used to generate supplementary information about the properties of metals using HRB or HRC hardness measurements.It is noteworthy that the proposed technique of coordination of HRB hardness val-ues with HB hardness values may be employed to, first, analyze σ and σ sizes using HBт вvalues, and second, to identify the nature of relationship between HRB, on the one hand,and d and y values, on the other hand, to compose the equation of relative strength and plasticity values and to assess the most important factor of reliability of metals.

DOI: 10.22227/1997-0935.2013.3.46-52

References
  1. Tylkin M.A. Spravochnik termista remontnoy sluzhby [Reference Book for a Heat Treater of the Repair Service]. Moscow, Metallurgiya Publ., 1981, 647 p.
  2. Mozberg R.K. Materialovedenie [Material Engineering]. Valgus Publ., Tallinn, 1976, p. 554.
  3. Gulyaev A.P. Metallovedenie [Metal Engineering]. Moscow, Metallurgiya Publ., 1986, 541 p.
  4. Arzamasov B.N., Makarova V.I., Mukhin G.G. Materialovedenie [Material Engineering]. Moscow, MGTU im. N.E. Baumana publ., 2008, 648 p.
  5. GOST 8479—70. Kategorii prochnosti, normy mekhanicheskikh svoystv, opredelennye pri ispytanii na prodol’nykh obraztsakh, i normy tverdosti [All-Russian State Standard 8479—70. Strength Categories, Standards of Mechanical Properties Identified in the Course of Testing of Longitudinal Samples, and Standards of Hardness].
  6. Gustov Yu.I., Gustov D.Yu., Bol’shakov V.I. Prochnostno-plasticheskaya indeksatsiya metallicheskikh materialov [Strength and Plasticity Indexing of Metal Materials]. Metallurgiya i gornorudnaya promyshlennost’ [Metallurgy and Mining Industry]. 1996, no. 3-4, pp. 31—33.
  7. Gustov Yu.I., Gustov D.Yu. Issledovanie vzaimosvyazi mekhanicheskikh svoystv metallicheskikh materialov. Teoreticheskie osnovy stroitel’stva. Doklady VII Pol’sko-rossiyskogo seminara [Research into Interrelations between Mechanical Properties of Metal Materials. Theoretical Fundamentals of Civil Engineering. Collected works of the 7th Russian-Slovak-Polish Seminar]. Moscow, ASV Publ., 1998, pp. 225—228.
  8. Gustov Yu.I., Gustov D.Yu., Voronina I.V. Opredelenie tverdosti staley po khimicheskomu sostavu i uglerodnomu ekvivalentu. Teoreticheskie osnovy stroitel’stva. Doklady XVII Pol’sko-rossiysko-slovatskogo seminara [Analysis of Steel Hardness on the Basis of the Chemical Composition and Carbon Equivalent. Theoretical Fundamentals of Civil Engineering. Collected works of the 7th Polish-Russian-Slovak Seminar]. Part 2. Zilina, 2008, pp. 237—244.
  9. Gustov Yu.I., Gustov D.Yu., Voronina I.V. Sinergeticheskie kriterii metallicheskikh materialov. Teoreticheskie osnovy stroitel’stva. Doklady XV Rossiysko-slovatsko-pol’skogo seminara [Synergetic Criteria of Metal Materials. Theoretical Fundamentals of Civil Engineering. Collected works of the 15th Russian-Slovak-Polish Seminar]. Warsaw, 2006, pp. 179—184.
  10. Skudnov V.A. Primenenie kompleksov razrusheniya sinergetiki dlya otsenki sostoyaniya i povedeniya (rabotosposobnosti) metallov. Fraktaly i prikladnaya sinergetika «FiPS-2005». Trudy IV mezhdunar. mezhdistsiplinarnogo simpoziuma. [Application of Synergy Destruction Sets in Assessment of Condition and Behaviour (Serviceability) of Metals. Fractals and Applied Synergy «FiPS-2005». Works of the 4th International Inter-disciplinary Symposium]. Moscow, Interkontakt Nauka Publ., 2005, pp. 221—226.
  11. Sorokin V.G., Volosnikova A.V., Vyatkin S.A. Marochnik staley i splavov [Reference Book of Steel and Alloy Grades]. Moscow, Mashinostroenie Publ., 1989, 640 p.

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Boundary value problem for one-dimensional fractional differential advection-dispersion equation

Vestnik MGSU 6/2014
  • Khasambiev Mokhammad Vakhaevich - Moscow State University of Civil Engineering (MGSU) postgraduate student, Department of Higher Mathematics, Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Aleroev Temirkhan Sultanovich - Moscow State University of Civil Engineering (MGSU) Doctor of Physical and Mathematical Sciences, Professor, Department of Higher Mathematics, Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 71-76

An equation commonly used to describe solute transport in aquifers has attracted more attention in recent years. After a formal study of some aspects of the advection-diffusion equation, basically from the mathematical point of view with the solution of a differential equation with fractional derivative, the main interest to this problem shifted onto physical aspects of the dynamical system, such as the total energy and the dynamical response. In this regard it should be pointed out that the interaction with environment is expressed in terms of stochastic arrow of time. This allows one also to reach a progress in one more issue. Formerly the equation of advection-diffusion was not obtained from any physical principles. However, mainly the success concerns linear fractional systems. In fact, there are many cases in which linear treatments are not sufficient. The more general systems described by nonlinear fractional differential equations have not been studied enough. The ordinary calculus brings out clearly that essentially new phenomena occur in nonlinear systems, which generally cannot occur in linear systems. Due to vast range of application of the fractional advection-dispersion equation, a lot of work has been done to find numerical solution and fundamental solution of this equation. The research on the analytical solution of initial-boundary problem for space-fractional advection-dispersion equation is relatively new and is still at an early stage of development. In this paper, we will take use of the method of variable separation to solve space-fractional advection-dispersion equation with initial boundary data.

DOI: 10.22227/1997-0935.2014.6.71-76

References
  1. Pskhu A.V. Uravneniya v chastnykh proizvodnykh drobnogo poryadka [Equations of Partial Derivative of Fractional Order]. Moscow, Nauka Publ., 2005, 200 p.
  2. Saigo M., Kilbas A.A. Some Classes of Differential Equation of Mathematical Models of Non-local Physical Processes. Fukuoka University Science Reports. 1999, vol. 29, no. 1, pp. 31—45.
  3. Malamud M.M., Oridoroga L.L. On Some Questions of the Spectral Theory of Ordinary Differential Fractional-order Equations. Dopov. Natsional’naya Akademiya Nauk Ukrainy. 1998, no. 9, pp. 39—47. J. of Math. Sci. 2011, vol. 174, no. 4.
  4. Mandelbrot B.B. Fractal Geometry of Nature. N.Y., Freman, 1983, 497 p.
  5. Samko S.G., Kilbass A.A., Marichev O.I. Integraly i proizvodnye drobnogo poryadka i nekotorye ikh prilozheniya [Integrals and Derivatives of Fractional Order and Some of their Applications]. Minsk, Nauka i Tekhnika Publ., 1987, 688 p.
  6. Nakhushev A.M. Drobnoe ischislenie i ego primenenie [Fraction Count and its Application]. Moscow, Fizmatlit Publ., 2003, 272 p.
  7. Bechelova A.R. O skhodimosti raznostnykh skhem dlya uravneniya diffuzii drobnogo poryadka [On the Convergence of Difference Schemes for Diffusion of Fraction Order Management]. Nelineynye kraevye zadachi matematicheskoy fiziki i ikh prilozhenie: sbornik nauchnykh trudov [Nonlinear Boundary Problems of Mathematical Physics and their Application: Collection of Scientific Papers]. Kiev, 1996, pp. 42—43.
  8. Nakhusheva V.A. Differentsial'nye uravneniya matematicheskikh modeley nelokal'nykh protsessov [Differential Equations of Mathematical Models of Nonlocal Models]. Moscow, Nauka Publ., 2006, 174 p.
  9. Aleroev T.S. Kraevye zadachi dlya differentsial'nykh uravneniy drobnogo poryadka [Boundary Problems for Differential Equations of Fraction Order]. Doklady Adygskoy (Cherkesskoy) Mezhdunarodnoy akademii nauk [Reports of Circassian International Academy of Sciences]. 2013, no. 1, pp. 9—14.

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USING POWERPOINT SLIDES IN THE COURSE OF DELIVERING LECTURES IN CHEMISTRY

Vestnik MGSU 8/2012
  • Telnoy Viktor Ivanovich - Moscow State University of Civil Engineering Candidate of Military Sciences, Associated Professor, Department of Descriptive Geometry and Engineering Graphics 8 (499) 183-24-83, Moscow State University of Civil Engineering, 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Nikiforova Tamara Pavlovna - Moscow State University of Civil Engineering (MGSU) Candidate of Technical Sciences, Deputy Chair, Department of General Chemistry, Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation.
  • Ustinova Yuliya Valerevna - Moscow State University of Civil Engineering Candidate of Technical Sciences, Associated Professor, Department of General Chemistry 8 (499) 183-32-92, Moscow State University of Civil Engineering, 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 241 - 246

Chemistry as a training course has its own characteristics which determine methods of organization
of various training activities, including lectures, laboratory assignments, and independent
work of students. However, the specificity and complexity of a course in chemistry do not contribute
to any increase in the willingness to master it. Problems in the perception and comprehension of the
subject cause the insufficient knowledge of chemistry. Therefore, alongside with proven classical
forms and methods of training advanced computer technologies are to be employed in the course
of delivering lectures in chemistry.
Given the nature of the discipline, the authors consider a sequence of presentations and
recommendations concerning the design of Microsoft Power Point slides to improve the clarity and
problem-free perception of the material to be mastered, and to develop the intellectual abilities of
students.
The process of compiling and developing the presentations is to be composed of the following
stages: generation of a pool of educational information within the framework of one lecture, breakdown
of its sections into slides, design of individual slides. At the same time, the sequence of slides
is to follow the course programme. Illustrations are required, including traditional fi gures, tables,
diagrams, video clips, animation and colour effects. If necessary, a student can go back to any section
of a lecture to answer questions.
One peculiar feature of a course in chemistry is a need for computer-aided simulation of
chemical phenomena and processes. It is an inseparable constituent of any course in chemistry. It
is also a method of reinforcing the process of learning and understanding of the essence of chemical
processes. It contributes to the development of explanatory skills of students who need to explain
the phenomena that they observe.
All presentations are recorded on computer disks so that students could use them for selfeducational
purposes or for the revision of any recorded material.
The proposed innovative lectures in chemistry can signifi cantly increase the amount of the
lecturing material by making it clearer and more demonstrative. It is aimed at improving the process
of training of a modern engineer.

DOI: 10.22227/1997-0935.2012.8.241 - 246

References
  1. Monakhov B.E., Tel’noy V.I. Izuchenie inzhenernoy grafi ki s ispol’zovaniem distantsionnykh informatsionnykh tekhnologiy [The study of Engineering Graphics through the Use of Distance Learning Information Technologies]. Proceedings of the VI International Scientific and Practical Conference «Modern Information Technologies and IT Education». Moscow, MGU Publ., 2011, vol. 1, pp. 354—357.
  2. Monakhov B.E., Tel’noy V.I. Obuchenie i kontrol’ znaniy po nachertatel’noy geometrii s ispol’zovaniem distantsionnykh obrazovatel’nykh tekhnologiy [Training and Assessment of Academic Performance in Descriptive Geometry through the Employment of Distance Learning Technologies]. Collection of selected works of the VI International Scientific and Practical Conference «Modern Information Technologies and IT education». Moscow, INTUIT.RU Publ., 2011, pp. 389—395.
  3. Tel’noy V.I. Ispol’zovanie mul’timediynykh prezentatsiy pri chtenii lektsiy po nachertatel’noy geometrii [Using Multimedia Presentations in the Course of Delivering Lectures in Descriptive Geometry]. Proceedings of the 7th All-Russian Scientific, Practical and Educational Conference «Basic Sciences in Modern Construction». Moscow, MGSU Publ., 2010, pp. 84—88.

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