Abstract
Using the Poisson equation and equations describing the plane stress state of plates as an example, the method of finite sums (two-dimensional integrating matrices) for the numerical solution of two-dimensional boundary value problems of the theory of elasticity is presented. According to this method, the original differential problem is preliminarily reduced to integral equations of the Volterra type, and then their approximation is carried out based on the replacement of the integrand by the Lagrange interpolation polynomial over Gaussian nodes. Two-dimensional integrating matrices are constructed. Numerical estimates of the accuracy of various test problems are carried out. It is shown that the convergence is exponential.
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This paper has been supported by the Kazan Federal University Strategic Academic Leadership Program (“PRIORITY-2030”).
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Paimushin, V.N., Makarov, M.V. (2022). Two-Dimensional Integrating Matrices for Solving Elasticity Problems in a Rectangular Domain by the Finite Sum Method. In: Badriev, I.B., Banderov, V., Lapin, S.A. (eds) Mesh Methods for Boundary-Value Problems and Applications. Lecture Notes in Computational Science and Engineering, vol 141. Springer, Cham. https://doi.org/10.1007/978-3-030-87809-2_29
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