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JOURNALS // Sibirskii Zhurnal Industrial'noi Matematiki // Archive

Sib. Zh. Ind. Mat., 2020 Volume 23, Number 4, Pages 48–68 (Mi sjim1108)

This article is cited in 10 papers

Analytical solutions to the differential equation of transverse vibrations of a piecewise homogeneous beam in the frequency domain for the boundary conditions of various types

A. L. Karchevsky

Sobolev Institute of Mathematics SB RAS, pr. Acad. Koptyuga 4, Novosibirsk 630090, Russia

Abstract: We obtain an analytical solution for the differential equation of transverse vibrations of a piecewise homogeneous beam in the frequency domain for various types of boundary conditions. All calculations involved are addition, multiplication, and inversion of square matrices of second order. The formulas are such that, when using them for layer-by-layer recalculation, the rounding error does not accumulate since the exponential functions in some expressions have exponents with nonpositive real parts.

Keywords: equation of transverse vibrations of a beam, layer-by-layer recalculation. .

UDC: 519.624.3

Received: 10.06.2020
Revised: 31.07.2020
Accepted: 10.09.2020

DOI: 10.33048/SIBJIM.2020.23.404


 English version:
Journal of Applied and Industrial Mathematics, 2020, 14:4, 648–665

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© Steklov Math. Inst. of RAS, 2026