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Numerical simulations of local and global buckling of hyperelastic tubes with different cross-sections

Vestnik MGSU 2/2019 Volume 14
  • Kovalevsky Lukasz - Warsaw University of Technology Master of Science in Civil Engineering, Reasearch-Teaching Assistant, Warsaw University of Technology, 16 Lech Kaczynski st., Warsaw, 00-637, Poland.
  • Emelo Stanislav - Warsaw University of Technology Doctor of Technical Sciences, Professor, civil engineer (mechanical construction), Head of the Department of Strength of Materials and Theory of Elasticity and Plasticity, Warsaw University of Technology, 16 Lech Kaczynski st., Warsaw, 00-637, Poland.
  • Andreev Vladimir I. - Moscow State University of Civil Engineering (National Research University) (MGSU) Doctor of Technical Sciences, Professor, Head of the Department of Strength of Materials, academic of the RAACS, Moscow State University of Civil Engineering (National Research University) (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation.

Pages 169-178

Introduction. An approach to the application of finite element programs (FEM) ABAQUS/Standard and ABAQUS/Explicit with various equations of state of incompressible isotropic hyperelastic materials is presented when analyzing compressed and stretched shell elements of elastomers. Elastomers are commonly used in construction as well as in structural shell elements, in particular pipes of different cross sections. Materials and methods. Three FEM models for pipes with the same length and initial stiffness were created. Pipes with elliptical, square and triangular cross sections are considered. Three types of structural models of rubber-like material (elastomer) were used - with a polynomial elastic energy function in the form of the MV model and the standard models of Neo - Hooke and Mooney - Rivlin. In the FEM models of the analyzed pipes, not enter initial imperfections. Numerical modeling buckling of pipes was performed for two types of initial and boundary conditions - for quasistatic and dynamic problems. Results. It is shown that the type of buckling depends on the cross section of the pipe. Comparison of buckling solutions for simulated pipes with different structural models demonstrated a good correlation of the results. An approximate history of the deformation of an elliptical sample analyzed by ABAQUS/Standard, loaded by moving the boundary, is given. Conclusions. It has been established that the ABAQUS/Standard program allows the use of incompressible hyperelastic materials, the ABAQUS/Explicit program does not provide this possibility. This implies the need to set the parameters of the material associated with the spherical part of the stress tensor. The parameter should not be too small, otherwise it will lead to numerical errors. Solving problems on the stability of pipe models with different physical models give good correlations of results.

DOI: 10.22227/1997-0935.2019.2.169-178

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Strength and stability analysis of load-bearing structures of a high-rise building with account for actual positions of reinforced concrete structural members

Vestnik MGSU 4/2015
  • Belostotskiy Aleksandr Mikhaylovich - Moscow State University of Civil Engineering (MGSU) Doctor of Technical Sciences, Professor, Moscow State University of Civil Engineering (MGSU), ; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Akimov Pavel Alekseevich - Moscow State University of Civil Engineering (MGSU) Doctor of Technical Sciences, chair, Department of Computer Sciences and Applied Mathematics, Corresponding Member of Russian Academy of Architecture and Construction Sciences, chief research worker, Research and Educational Center of Computational Simulation of Unique Buildings, Structures and Complexes, Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; +7 (499) 183-59-94, +7 (499) 929-50-17; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Petryashev Nikolay Olegovich - Moscow State University of Civil Engineering (MGSU) engineer, Research and Educational Center of Computational Simulation of Unique Buildings, Structures and Complexes, Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; +7 (499) 183-59-94, +7 (499) 929-50-17; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Petryashev Sergey Olegovich - Moscow State University of Civil Engineering (MGSU) engineer, Research and Educational Center of Computational Simulation of Unique Buildings, Structures and Complexes, Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; +7 (499) 183-59-94, +7 (499) 929-50-17; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Negrozov Oleg Aleksandrovich - Moscow State University of Civil Engineering (MGSU) postgraduate student, Department of Computer Sciences and Applied Mathematics, engineer, Research and Educational Center of Computational Simulation of Unique Buildings, Structures and Complexes, Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; +7 (499) 183-59-94, +7 (499) 929-50-17; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 50-68

The given paper is devoted to strength and stability analysis of load-bearing structures of a high-rise (54-storey) building with allowance for actual positions of reinforced concrete structural members (columns and walls). Finite element method (FEM) is used for structural analysis. The authors present formulations of problems, governing equations, information about basic three-dimensional finite element models (so-called “design” (ideal) model, the first “actual” model (taking into account the deviations of positions of columns from the project) and the second “actual” model (taking into account the deviations of positions of walls from the project)) of the coupled system “high-rise building - foundation” within ANSYS Mechanical software and their verification, numerical approach to structural analysis and corresponding solvers. Finite element models include mainly 4-node structural shell elements (suitable for analyzing foundation slabs, floor slabs and load-bearing walls) and three-dimensional 2-node beam elements (suitable for analyzing beams and columns), special spring-damper elements and multipoint constraint elements. Detailed finite element mesh on the bottom foundation slab is agreed with the location of piles. The advanced model of Prof. Yu.K. Zaretsky is used for approximation of soil behavior. Construction sequence and various types of nonlinearities are taken into account. The results of modal analysis, static and dynamic analysis with various load combinations (gravity load, facade load, dead (constant) loads, temporary loads, wind load, snow load, crown load etc.) are considered, the results of the regulatory assessment of the strength of structures (obtained with the use of corresponding software in accordance with design codes of the Russian Federation) are under consideration as well. The corresponding displacements, stresses, natural vibration frequencies can be used for research and development of the correct monitoring method of the foundation and load-bearing structures of a high-rise building.

DOI: 10.22227/1997-0935.2015.4.50-68

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  6. Belostotskiy A.M., Sidorov V.N., Akimov P.A., Kashevarova G.G. Matematicheskoe modelirovanie tekhnogennoy bezopasnosti otvetstvennykh stroitel'nykh ob
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  9. Akimov P.A. Correct Discrete-Continual Finite Element Method of Structural Analysis Based on Precise Analytical Solutions of Resulting Multipoint Boundary Problems for Systems of Ordinary Differential Equations. Applied Mechanics and Materials. 2012, vols. 204—208, pp. 4502—4505. DOI: http://dx.doi.org/10.4028/www.scientific.net/AMM.204-208.4502.
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  16. Afanas'eva I.N. Adaptivnaya metodika chislennogo modelirovaniya trekhmernykh dinamicheskikh zadach stroitel'noy aerogidrouprugosti : dissertatsiya kandidata tekhnicheskikh nauk [Adaptive Procedure of Numerical Modeling of Three-Dimensional Dynamic Problems of Construction Aerohydroelasticity. Candidate of Technical Sciences Thesis]. Moscow, MGSU Publ., 2014, 200 p. (In Russian)
  17. Kalichava D.K. Adaptivnye dinamicheskie konechnoelementnye modeli v osnove monitoringa nesushchikh konstruktsiy vysotnykh zdaniy : dissertatsiya kandidata tekhnicheskikh nauk [Adaptive Dynamic Finite Element Models as a Base for Monitoring of Load-Bearing Structures of High-rise Buildings. Candidate of Technical Sciences Thesis]. Moscow, MGSU Publ., 2012, 149 p. (In Russian)
  18. Kabantsev O.V., Tamrazyan A.G. Uchet izmeneniy raschetnoy skhemy pri analize raboty konstruktsiy [Structural Analysis with Allowance for Modification of Computational Scheme]. Inzhenerno-stroitel'nyy zhurnal [Magazine of Civil Engineering]. 2014, no. 5 (49), pp. 15—26. (In Russian)
  19. Kabantsev O.V. Verifikatsiya raschetnoy tekhnologii «Montazh» programmnogo kompleksa «SCAD» [Verification of Calculation Technology “Mounting” from Software Complex “SCAD”]. International Journal for Computational Civil and Structural Engineering. 2011, vol. 7, issue 3, pp. 103—109. (In Russian)
  20. Kabantsev O.V. Metod rascheta mnogoetazhnykh zdaniy s uchetom protsessa izmeneniya raschetnoy skhemy pri razlichnykh rezhimakh raboty raboty [Analysis Methods of Multi-storeyed Buildings with the Allowance for Modification of Structural Design under Various Operation Conditions]. Vestnik MGSU [Proceedings of Moscow State University of Civil Engineering]. 2013, no. 10, pp. 43—51. (In Russian)
  21. Kabantsev O.V., Karlin A.V. Raschet nesushchikh konstruktsiy zdaniy s uchetom istorii vozvedeniya i poetapnogo izmeneniya osnovnykh parametrov raschetnoy modeli [Analysis of Load-Bearing Structures with Allowance for Construction Sequence and Step-by-Step Modification of Basic Parameters of Computing Model]. Promyshlennoe i grazhdanskoe stroitel'stvo [Industrial and Civil Engineering]. 2012, no. 7, pp. 33—35. (In Russian)
  22. Kabantsev O., Perelmuter A. Modeling Transition in Design Model when Analyzing Specific Behaviors of Structures. Procedia Engineering. 2013, vol. 57, pp. 479—488.
  23. 2 3. Kim H.S., Shin A.K. Column Shortening Analysis with Lumped Construction Sequences. Procedia Engineering. 2011, vol. 14, pp. 1791—1798.
  24. Aul A.A., Belostotskiy A.M., Krakovskiy M.B. Raschet zhelezobetonnykh konstruktsiy pri sovmestnom ispol'zovanii programm ANSYS i «OM SNiP Zhelezobeton» [Analysis of Reinforced Structures with the Use of ANSYS Software and “OM Snip Zhelezobeton” Package]. Beton i zhelezobeton [Concrete and Reinforced Concrete]. 2011, no. 5, pp. 19—23. (In Russian)
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  26. Kukushkin I.S. SCAD Office V.21. Novyy oblik [SCAD Office V.21. New Profile]. CADmaster. 2014, no. 3—4 (76—77), pp. 100—102. (In Russian)
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Research into the stress-strained state of the concrete dam given the variability of the linear expansion coefficient of concrete

Vestnik MGSU 11/2014
  • Krutov Denis Anatol’evich - Institute Hydroproject named after S.Ya. Zhuk (Institute Hydroproject) Candidate of Technical Sciences, Chief Specialist, Hydraulic Department 1, Institute Hydroproject named after S.Ya. Zhuk (Institute Hydroproject), 2 Volokolamskoe Shosse, Moscow, 125993, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Shilov Leonid Andreevich - Institute Hydroproject named after S.Ya. Zhuk (Institute Hydroproject); Moscow State University of Civil Engineering (MGSU) category 1 engineer Hydraulic Department 1, Institute Hydroproject; Master student, Institute of Engineering and Ecological Construction, and Automation, MGSU, Institute Hydroproject named after S.Ya. Zhuk (Institute Hydroproject); Moscow State University of Civil Engineering (MGSU), 2 Volokolamskoe Shosse, Moscow, 125993, Russian Federation; 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 154-160

The article has summarized findings of the research into the stress-strained state of the concrete dam. Within the framework of this project, the co-authors have analyzed particular features accompanying field data processing, if the concrete dam serves as the data source. The co-authors have derived average linear expansion coefficients for frozen concrete samples originating from varied dam zones. The findings of numerical studies are provided with the account for the variable value of the linear expansion coefficient of the concrete exposed to negative temperatures. Specialized contact methods in finite elements simulations were employed to simulate the casting joints, with the monolith height being equal to 1.5 m, to take account of the non-linear shear strain of joints and their opening. The analysis performed by the co-authors is based on the combinations of loads and other exposures typical for January as the coldest month of an average year. Casting joints were only simulated in the bottom of the finite element dam model, while no joints were simulated for the dam top. The findings have proven, that the 1.53-fold rise in the value of α accompanying concrete freezing, influences the strain state of the dam at Bogouchanskaya hydropower plant. However no effect was produced by the change in the α value onto the strain state of the dam face. Besides, the rock-to-concrete contact depth and width increased. Although, given the small value of the aforementioned increase (decimal points of a millimeter), it will produce no effect on the filtration underway within the bedrock base of the dam. Changes in the value of the linear expansion coefficient of concrete must be taken into account when physico-mechanical characteristics of concrete are identified for the purpose of the finite element analysis.

DOI: 10.22227/1997-0935.2014.11.154-160

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  7. Durcheva V.N., Mayorova M.A. Tenzometricheskie izmereniya svobodnykh deformatsiy betona plotin [Strain Gauge Measurement of Free Deformation of Concrete Dams]. Gidrotekhnicheskoe stroitel’stvo [Hydraulic Engineering]. 2002, no. 11, pp. 6—9.
  8. Durcheva V.N. K voprosu o vliyanii zamorozhennogo betona na rabotu gidrotekhnicheskikh sooruzheniy [On the Effect of Frozen Concrete on Waterworks’ Operation]. Trudy koordinatsionnykh soveshchaniy po gidrotekhnike [Works of Coordination Meetings on Hydrotechnics]. 1974, no. 91, pp. 87—91. (In Russian)
  9. Durcheva V.N., Zagryadskiy I.I. Analiz sobstvennykh deformatsiy betona na ekspluatiruemykh plotinakh po dannym naturnykh nablyudeniy [Analysis of the Characteristic Deformations of Concrete in Operating Dams According to Field Observations]. Izvestiya VNIIG im. B.E. Vedeneeva [Proceedings of All-Russian Research and Development Institute of Hydraulic Engineering Named after B.E. Vedeneev]. 2000, vol. 237, pp. 54—62. (In Russian)
  10. Kozlov D.V., Krutov D.A. Naturnye issledovaniya svobodnykh deformatsiy betona v blokakh plotiny Boguchanskogo gidrouzla [Field Investigations of Free Deformation of Concrete Blocks in Boguchansky Hydrosystem Dam]. Vodnye resursy Tsentral’noy Azii [Water Resources of Central Asia]. 2004, no. 1, pp. 88—97. (In Russian)
  11. Kozlov D.V., Krutov D.A. Analysis of Natural Deformations of Concrete According to Data of Field Observations of the Dam of the Boguchanskii Waterworks Facility. Power Technology and Engineering. 2005, vol. 39, no. 2, pp. 78—83. http://dx.doi.org/10.1007/s10749-005-0029-6.
  12. Durcheva V.N. Naturnye issledovaniya monolitnosti vysokikh betonnykh plotin [Field Investigations of Monolithic High Concrete Dams]. Moscow, Energoatomizdat Publ., 1988, 120 p. (In Russian)
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FIELD TESTING OF DYNAMIC CHARACTERISTICS OF THE BUILDING OF A UNIVERSAL POOL UNDER CONSTRUCTION IN ANAPA

Vestnik MGSU 5/2012
  • Rumyantsev Anton Andreevich - Moscow State University of Civil Engineering (MSUCE) junior researcher, Moscow State University of Civil Engineering (MSUCE), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Sergeevtsev Evgeniy Yur'evich - Moscow State University of Civil Engineering (MSUCE) postgraduate student, Moscow State University of Civil Engineering (MSUCE), Mytishchi Branch, 50 Olimpiyskiy prospect, Moscow Region, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 93 - 97

The authors describe the methodology and results of dynamic field testing of the building of a universal pool under construction, as well as its eigenfrequencies, identified through the employment of a computer model.
The subject of the research represents the building of a universal pool under construction in Anapa. The general goal of this research is to identify the seismic stability of the building structure. An unbalance-type vibration machine was used in the course of the testing procedure. The machine was designed and manufactured at Moscow State University of Civil Engineering.
Identification of natural vibrations of building structures and verification of the identity of the computer model and the natural behaviour of the structure were to be completed to assess the required modes of operation of the vibration machine. Identification of full-scale dynamic characteristics was performed through the employment of the impulse method of vibration excitation.
Comparative analysis of experimental vibration frequencies and eigenfrequencies identified in the course of calculations based on different mathematical models demonstrates their similarity in terms of local shapes of vibrations, namely, in terms of buckling vibrations of an "annular" beam employed for the purpose of measurements taken in the course of the testing procedure. Frequency values identified in the course of testing and calculations vary from 4.5 to 19.8 Hz.
Calibration of the vibration machine represents another objective of the experiment. The experiment has demonstrated that the whole operating range of frequencies (2 to 15Hz) is to be employed in the course of testing procedures described above.

DOI: 10.22227/1997-0935.2012.5.93 - 97

References
  1. Shablinskiy G.E., Isaykin A.S. Retrospektivnaya otsenka osobo otvetstvennykh sooruzheniy na osnove naturnykh dinamicheskikh issledovaniy [Retrospective Assessment of Structures of Major Importance on the basis of Dynamic Field Tests]. Promyshlennoe i grazhdanskoe stroitel'stvo [Industrial and Civil Construction], 1997, no. 8.
  2. Shablinskiy G.E., Zubkov D.A., Naturnye dinamicheskie issledovaniya stroitel'nykh konstruktsiy [Full-scale Dynamic Testing of Structures]. Moscow, ASV Publ., 2009.

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