 | | Mechanics of Solids
A Journal of Russian Academy of Sciences | | Founded
in January 1966
Issued 6 times a year
Print ISSN 0025-6544
Online ISSN 1934-7936 |
Archive of Issues
| Total articles in the database: | | 12804 |
| In Russian (Èçâ. ÐÀÍ. ÌÒÒ): | | 8044
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| In English (Mech. Solids): | | 4760 |
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| A.D. Chernyshov, "On the Solution of Boundary Value Problems of Mechanics for the Poisson Equation and Related Equations," Mech. Solids. 46 (3), 480-493 (2011) |
| Year |
2011 |
Volume |
46 |
Number |
3 |
Pages |
480-493 |
| DOI |
10.3103/S0025654411030149 |
| Title |
On the Solution of Boundary Value Problems of Mechanics for the Poisson Equation and Related Equations |
| Author(s) |
A.D. Chernyshov (Voronezh State Technological Academy, pr-t Revolyutsii 19, Voronezh, 394000 Russia, chernyshovad@mail.ru) |
| Abstract |
To a boundary value problem, we assign an auxiliary problem of determining the spectrum of eigenfunctions and eigenvalues (EFV). After the main problem has been reduced to a form with homogeneous boundary conditions, it becomes possible to prove theorems about the formulas for the solution of the boundary value problem with linear equations of elliptic type for multidimensional multiply connected domains by using the spectral expansion in the Fourier series. We find conditions under which the action of second-order differential operators on the obtained solutions in the Fourier series can be computed not only in the interior of the domain but also on its boundary. But if these conditions are not satisfied, then the series for second-order differential operators do not converge on the boundary. The proposed method for the expansion in the EFV can be used not only in plane but also in spatial problems if the domain of complicated shape can be represented as a combination of bounded domains with known EFV spectra. As one of the examples, we consider the problem of torsion of an elastic rod whose cross-section consists of a rectangle and a half-disk. |
| Keywords |
solution formulas for boundary value problems, Poisson equation, Euler-Lagrange equation, boundary function |
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|
| Received |
23 November 2007 |
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