MATHEMATICAL MODELLING OF TECHNOLOGICAL PROCESSES AND SYSTEMS

MATHEMATICAL AND NUMERICAL SIMULATION OF STRESSES AND DISPLACEMENTS LOCALIZATION PROBLEMS

  • 1 I. Vekua Institute of Applied Mathematics of Iv. Javakhishvili Tbilisi State University, Georgia

Abstract

Mathematical and numerical simulation of the non-classical problems, namely problems of localization of stresses and displacements in the elastic body, are obtained by the boundary element method. The current work examines two localization problems, which have the following physical sense: on the middle point of the segment lying inside a body parallel to the border half plane in first case a point force is applied, and we must find such value of the normal stress along the section of the border half plane, which will cause this point force, while in the second case, there is given a vertical narrow deep trench outgoing of this point, and we must find such value of the normal stress along the section of the border half plane, which will result in such a pit. By using MATLAB software, the numerical results are obtained and corresponding graphs are constructed.

Keywords

References

  1. Crouch, S.L., Starfield A.M. Boundary element methods in solid mechanics. Allen & Unwin, London, 1983
  2. Zirakashvili, N. On the numerical solution of some twodimensional boundary-contact delocalization problems - Meccanica, 48(7), 2013,1791–1804
  3. Agalovyan, L.A . The solution asymptotics of classical and nonclassical, static and dynamic boundary-value problems for thin bodies - J Int Appl Mech 38(7), 2002, 765–782
  4. Dehghan Mehdi. Numerical solution of a non-local boundary value problem with Neumann’s boundary conditions - Commun Numer Methods Eng 19(1), 2002, 1–12
  5. Sladek, J., Sladek, V., Baant, Z.P. Non-local boundary integral formulation for softening damage - Int J Numer Meth Eng 57(1), 2003, 103–116
  6. Avalishvili, G., Avalishvili, M., Gordeziani, D. On some non-classical two-dimensional models for thermoelastic plates with variable thickness - Bull Georgian Natl Acad Sci (N.S.) 4(2), 2010, 27–34
  7. Avalishvili, G., Avalishvili, M., Gordeziani, D. On integral nonlocal boundary value problems for some partial differential equations - Bull Georgian Natl Acad Sci (N.S.) 5(1), 2011, 31–37
  8. Ma, H. M. , Gao, X. -L., Reddy, J. N. A non-classical Mindlin plate model based on a modified couple stress theory - Acta Mechanica 220 (1), 2011, 217–235
  9. Khomasuridze, N., Janjgava, R., Zirakashvili, N. Some non-classical thermoelasticity problems for a rectangular parallelepiped - Meccanica, 49(6), 2014, 1337-1342
  10. Zirakashvili, N. Numerical Simulation of Some Non-Classical Elasticity Problems for the Half-Space by the Boundary Element Method - Bulletin of TICMI, 22(1), 2018, 41-58

Article full text

Download PDF