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Zhurnal Vychislitel'noi Matematiki i Matematicheskoi Fiziki, 2005, Volume 45, Number 8, Pages 1399–1406
(Mi zvmmf610)
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Approximation of the eigenfrequencies of a triangular grid of bars
E. M. Bogatov Branch of The Moscow State Institute of Steel and Alloys Starooskol'skii Technological Institute
Abstract:
A rectangular plate is approximated by a regular triangular grid of bars. It is shown that the low-frequency spectrum of the plate is close to that of the grid. The difference between the eigenvalues of the continual and discrete problems is estimated in terms of the periodicity cell. The proof of the main result is based on a finite difference analogue of the Laplacian and on certain facts from the theory of differential equations on graphs.
Key words:
triangular grid of bars, low-frequency spectrum, eigenoscillations, eigenvalue problem for fourth-order equations on graphs, latticed plate, plate discretization, hexagonal mesh, finite-difference Laplacian.
Received: 01.11.2004 Revised: 05.03.2005
Citation:
E. M. Bogatov, “Approximation of the eigenfrequencies of a triangular grid of bars”, Zh. Vychisl. Mat. Mat. Fiz., 45:8 (2005), 1399–1406; Comput. Math. Math. Phys., 45:8 (2005), 1350–1357
Linking options:
https://www.mathnet.ru/eng/zvmmf610 https://www.mathnet.ru/eng/zvmmf/v45/i8/p1399
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Abstract page: | 233 | Full-text PDF : | 117 | References: | 41 | First page: | 1 |
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