ECONOMICS, MANAGEMENT AND ORGANIZATION OF CONSTRUCTION PROCESSE

Tools of production scheduling - an integral efficiency potential of organizational, technological and management solutions of a construction object

Vestnik MGSU 1/2015
  • Lapidus Azariy Abramovich - Moscow State University of Civil Engineering (National Research University) (MGSU) Professor, Doctor of Technical Sciences, chair, Department of Technology and Management of the Construction, Honored Builder of the Russian Federation, Recipient of the Prize of the Russian Federation Government in the field of Science and Technology, Moscow State University of Civil Engineering (National Research University) (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 97-102

A director of a construction company of any level seeks for a tool, which allows estimating the quality, reliability, safety and durability of the works using one general parameter. The author of the article considers a new tool of operations management - an integral efficiency potential of organizational, technological and management solutions of a construction object. The investigations allow assuming, that the chosen direction - integrating the efficiency potentials of organizational, technological and management solutions - provides interesting possibilities to the researchers and management of a construction object not only of a theoretical, but also of a practical character. The author gives terminological substantiation, methodological base and variants of mathematical model formation. The direction of further investigations is formulated - from singular potentials to integral potential of a construction object.

DOI: 10.22227/1997-0935.2015.1.97-102

References
  1. Lapidus A.A. Integral Potential Effectiveness of Organizational and Technological and Managerial Decisions of Building Object. Applied Mechanics and Materials. Trans Tech Publications. Switzerland. 2014, vol. 584—586, pp. 2230—2232. DOI: http://dx.doi.org/10.4028/www.scientific.net/AMM.584-586.2230.
  2. Gusakov A.A., Bogomolov Yu.M., Brekhman A.I., Vaganyan G.A., Vaynshteyn M.S. Sistemotekhnika stroitel’stva: Entsiklopedicheskiy slovar’ [System Engineering of Construction: Encyclopedic Dictionary]. Editor A.A. Gusakov. 2nd edition, revised and enlarged. Moscow, ASV Publ., 2004, 320 p. (In Russian)
  3. Magurin V.M., Azgal’dov G.G., Belov O.E., Biryukov A.N. Kvalimetricheskaya ekspertiza stroitel’nykh ob”ektov [Quality-Metric Examination of Construction Facilities]. Saint Petersburg, Politekhnika Publ., 2008, 527 p. (In Russian)
  4. Lapidus A.A., Berezhnyy A.Yu. Matematicheskaya model’ otsenki obobshchennogo pokazatelya ekologicheskoy nagruzki pri vozvedenii stroitel’nogo ob”ekta a [Mathematical Model Designated for the Assessment of the Integrated Environmental Load Produced by a Building Project]. Vestnik MGSU [Proceedings of Moscow State University of Civil Engineering]. 2012, no. 3, pp. 149—153. (In Russian)
  5. Lapidus A.A. Potentsial effektivnosti organizatsionno-tekhnologicheskikh resheniy stroitel’nogo ob”ekta [Efficiency Potential of Management and Technical Solutions for a Construction Object]. Vestnik MGSU [Proceedings of Moscow State University of Civil Engineering]. 2014, no. 1, pp. 175—180. (In Russian)

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Study of parametric oscillations of viscoelastic cylindrical panel of variable thickness

Vestnik MGSU 11/2018 Volume 13
  • Abdikarimov Rustamkhan A. - Tashkent Institute of Finance Doctor of Physical and Mathematical Sciences, Associate Professor, Tashkent Institute of Finance, 60A A. Temur st., Tashkent, 100000, Uzbekistan.
  • Khodzhaev Dadakhan A. - Tashkent Institute of Irrigation and Agricultural Mechanization Engineers (TIIAME) Candidate of Physical and Mathematical Sciences, Associate Professor, Tashkent Institute of Irrigation and Agricultural Mechanization Engineers (TIIAME), 39 Kary-Niyazov st., Tashkent, 100000, Uzbekistan.
  • Normuminov Bakhodir A. - Tashkent Institute of Irrigation and Agricultural Mechanization Engineers (TIIAME) Senior Lecture, Tashkent Institute of Irrigation and Agricultural Mechanization Engineers (TIIAME), 39 Kary-Niyazov st., Tashkent, 100000, Uzbekistan.
  • Mirsaidov Mirziyod M. - Tashkent Institute of Irrigation and Agricultural Mechanization Engineers (TIIAME) Academician of Academy of Sciences of Uzbekistan, Doctor of Technical Sciences, Professor, Tashkent Institute of Irrigation and Agricultural Mechanization Engineers (TIIAME), 39 Kary-Niyazov st., Tashkent, 100000, Uzbekistan.

Pages 1315-1325

ABSTRACT Introduction. Isotropic viscoelastic cylindrical panels of variable thickness under the effect of a uniformly distributed vibration load applied along one of the parallel sides, resulting in parametric resonance (with certain combinations of eigenfrequencies of vibration and excitation forces) are considered. Materials and methods. It is believed that under the effect of this load, the cylindrical panels undergo the displacements (in particular, deflections) commensurate with their thickness. Based on the classical Kirchhoff-Love hypothesis, a mathematical model of the problem of parametric oscillations of a viscoelastic isotropic cylindrical panel of variable thickness in a geometrically non-linear formulation is constructed. Corresponding nonlinear equations of vibration motion of panels under consideration are derived (in displacements). The technique of the nonlinear problem solution by applying the Bubnov-Galerkin method at polynomial approximation of displacements (and deflection) and a numerical method that uses quadrature formula are proposed. The Koltunov-Rzhanitsyn kernel with three different rheological parameters is chosen as a weakly singular kernel. Results. Parametric oscillations of viscoelastic cylindrical panels of variable thickness under the effect of an external load are investigated. The effect on the domain of dynamic instability of geometric nonlinearity, viscoelastic properties of material, as well as other physical-mechanical and geometric parameters and factors (initial imperfections of the shape, aspect ratios, thickness, boundary conditions, excitation coefficient, rheological parameters) are taken into account. Conclusions. A mathematical model and method have been developed for estimating parametric oscillations of a viscoelastic cylindrical panel of variable thickness, taking into account geometric nonlinearity under the action of periodic loads. The results obtained are in good agreement with the results and data of other authors. The convergence of the Bubnov-Galerkin method is verified.

DOI: 10.22227/1997-0935.2018.11.1315-1325

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