Search for an equal-strength contour inside a viscoelastic rectangle
DOI:
https://doi.org/10.32347/2411-4049.2023.3.154-162Keywords:
Kelvin-Voigt model, Kolosov-Muskhelishvili formulas, Riemann-Hilbert problems, Volterra equationAbstract
Irregularity of geometric and physical parameters in thin-walled structures leads to significant concentrations of stresses and creates dangerous zones for the spread of cracks or plastic deformations. Under the influence of a tense state, they are similar to gills. Stress concentration zones in areas of irregularity have a significant impact on the tensile strength and durability of thin-walled structures. Traditional analytical and numerical methods known at this time are less effective in investigating the stress-strain condition of corrugated thin-walled structures. It is, therefore, necessary to develop new effective methods for solving the tasks of this class. Currently, for engineering calculations, there is virtually no comparison of simple and convenient formulas for determining the critical compressive load taking into account the peculiarities of the design. The scientific novelty of the paper is that to achieve the set goal, it will be used for the first time in the general theory developed for the calculation of buildings and structures, known as the "Theory of elasticity in ordinary differential equations." The paper will show that the accuracy of this new theory is adequate to the classical elongation theory and at the same time dramatically simplifies the solution of any problem in the calculation of tiles, which is achieved by converting them to conventional differential equations. The general methods of compiling differential equations, the methods of its simplification, for the calculation of membranes with cross-sectional incisions, and the calculation of plates under conditions of nonlinear deformation are discussed. Methods for solving differential equations with variable and momentum coefficients are specified. An algorithm and a program for the analysis of the stress-strain state of spatial structures and their elements are developed. The practical value of the paper lies in the possibility of using developed methods and programs for the design and construction of buildings, as well as for the stability tasks of slabs with holes, and panels used in construction as typical assembly elements. The given mathematical algorithm and program for specific tasks, which are distinguished by simplicity, can be used by design and research organizations in the calculation and design of plates and membranes.
References
Banrsuri, R. (2006). One mixed problem of the plane theory with a partially unknown boundary. Proc. A. Razmadze Math. Inst., 9-16 [in Georgian].
Banrsuri, R. (2007). Solution of the mixed problem of plate bending for a multi-connected domain with partially unknown boundary in the presence of cyclic symmetry. Proc. A. Razmadze Math., 9-22 [in Georgian].
Odishelidze, N., & Criado-Aldenueva, F. (2008). Some axially symmetric problems of the theory of plane elasticity with partially unknown boundaries [in Georgian].
Kapanadze, G. (2003). The problem of plate bending for a finite doubly-connected domain with a partially unknown boundary. Prikl. Melh., 39 #5, 121-126 [in Georgian].
Kapanadze, G. (2007). On one problem of the plane theory of elasticity with a partially unknown boundary. Proc. of A. Razmadze Math. Inst., 143, 61-71 [in Georgian].
Kapanadze, G. (2007). On a bending a plate for a doubly connected domain with partially unknown boundary. Prikl. Math. Mekh., 71 (1), 33-42. Translation in Appl. Math. mekh. 71. #1, 30-39 [in English].
Banrsuri, R., & Kapanadze, G. (2013). The problem of finding a full-strength inside the polygon. Proc. of A. Razmadze Math. Inst., 1631-7 [in Georgian].
Shavlakadze, S., Kapanadze, G., & Gogolauri, A. (2019). About one contact problem for a viscoelastic halfplate. Translat of A. Razmadze. Math. Inst., 173, 103-110 [in Georgian].
Gurgenisze, D., & Kipiani, G. (2020). Analysis on stability of having holes thin-walled spatial structures. International Scientific Journal "Problems of Mechanics", 1(78), Tbilisi, 25-33 [in Georgian].
Kipiani, G. (2014). Definition of critical loading on three-layered plate with cuts by transition from static problem to stability problem. Contemporary Problems in Architecture and Construction. Selected, peer reviewed papers the 6th International Conference on Contemporary Problems of Architecture and Construction, June 24-27, Ostrava, Czech Pepublic. Edited by Darja Kubeckov. Transtech. publications LTD (Switzerland).
Mikeladze, M. (2018). Basics of calculation of thin-walled spatial systems. (D. Tabatadze, Ed.). (Second revised edition). Tbilisi: "Education" [in Georgian].
Mikeladze, M. (2018). Basics of shell theory. (D. Tabatadze, Ed.). (Second Revised Edition). Tbilisi: "Education" [in Georgian].
Mikeladze, M. (2018). Theory of slab bending. (Second Revised Edition). (I. Kakutashvili, Ed.). Tbilisi: "Education" [in Georgian].
Tskedadze, R., Tabatadze, D. (2019). Sustainability of stem systems. (A. Tabatadze, Ed.). Tbilisi: "Technical University of Georgia" [in Georgian].
Kifiani, G., Akhalaia, G., Beridze, V., Gegenava, G. (2012). Restoration of damaged elastic shell-type constructions with discretely connected pipes. Institute of Water Management of Technical University of Georgia. Collection of scientific works, 67, Tbilisi, 221-225.
Kaliukh, Y.I., & Vusatiuk, A.Y. (2019). Factorization in Problems of Control and Dynamics of Lengthy Systems. Cybern Syst Anal, 55, 274–283. https://doi.org/10.1007/s10559-019-00132-9
Kaliukh, I., & Berchun, Y. (2020). Four-Mode Model of Dynamics of Distributed Systems. Journal of Automation and Information Sciences, 52 (2), 1-12. https://doi.org/10.1615/JAutomatInfScien.v52.i2.10
Kaliukh, I., & Lebid, O. (2021). Constructing the Adaptive Algorithms for Solving Multi-Wave Problems. Cybern Syst Anal, 57, 938–949. https://doi.org/10.1007/s10559-021-00419-w
Trofymchuk, O., Lebid, O., Berchun, V., Berchun, Y., & Kaliukh, I. (2022). Ukraine's Cultural Heritage Objects Within Landslide Hazardous Sites. In: Vayas, I., & Mazzolani, F.M. (Eds.). Protection of Historical Constructions. PROHITECH 2021, Lecture Notes in Civil Engineering, vol. 209 Cham: Springer. https://doi.org/10.1007/978-3-030-90788-4_73
Kaliukh, I., Fareniuk, G., & Fareniuk, I. (2018). Geotechnical Issues of Landslides in Ukraine: Simulation, Monitoring and Protection. In: Wu W., Yu HS. (eds) Proceedings of China-Europe Conference on Geotechnical Engineering. Springer Series in Geomechanics and Geoengineering. Springer, Cham. https://doi.org/10.1007/978-3-319-97115-5_124
Slyusarenko, Y. et al. (2023). Experimental Solving the Problem of the Shelter Object Reinforced Concrete Structures Thermal Expansion. In: Ilki, A., Çavunt, D., Çavunt, Y.S. (eds) Building for the Future: Durable, Sustainable, Resilient. fib Symposium 2023. Lecture Notes in Civil Engineering, vol 350. Springer, Cham. https://doi.org/10.1007/978-3-031-32511-3_173
Trofymchuk, O. et al. (2019). “Dynamic certification of landslide protection structures in a seismically hazardous region of Ukraine: Experimental and analytical research,” Earthquake Geotechnical Engineering for Protection and Development of Environment and Constructions. Proceedings of the 7th International Conference on Earthquake Geotechnical Engineering, June 17-20, 2019, Rome, Italy, pp. 5337–5344.
Downloads
Published
How to Cite
Issue
Section
License
Copyright (c) 2023 Kapanadze G., Balavadze V., Kristesiashvili L., Archvadze V.

This work is licensed under a Creative Commons Attribution 4.0 International License.
The journal «Environmental safety and natural resources» works under Creative Commons Attribution 4.0 International (CC BY 4.0).
The licensing policy is compatible with the overwhelming majority of open access and archiving policies.