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IssuesArchive of Issues2014-5pp.518-530

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A.I. Moshinskii, "Equation of Longitudinal Vibrations of a Beam with Coefficients Periodically Depending on the Coordinate," Mech. Solids. 49 (5), 518-530 (2014)
Year 2014 Volume 49 Number 5 Pages 518-530
DOI 10.3103/S0025654414050045
Title Equation of Longitudinal Vibrations of a Beam with Coefficients Periodically Depending on the Coordinate
Author(s) A.I. Moshinskii (St. Petersburg Chemical-Pharmaceutical Academy, ul. Professora Popova 14, St. Peterburg, 197376 Russia, alex-moshinskij@yandex.ru)
Abstract The equation of small longitudinal vibrations of a beam is considered for the case in which the coefficients are periodic and have "gaps" (sharp decreases in the value) at some point in the space inside the periodicity interval. We suggest to describe the process locally in the domain of minimum of the coefficients by an equation of the boundary layer approximation. Attention is mainly paid to the analysis of this equation. A time hierarchy of simplified models for describing this process is established.
Keywords homogenization, asymptotics, model hierarchy, effective coefficients
References
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16.  N. S. Bakhvalov, K. Yu. Bogachev, and M. E. Eglit, "Numerical Calculation of Effective Elastic Moduli for Incompressible Porous Material," Mekh. Komp. Mater. 32 (5), 579-587 (1996) [Mech. Comp. Mater. (Engl. Transl.) 32 (5), 399-405 (1996)].
Received 25 July 2011
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