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This article is cited in 12 scientific papers (total in 12 papers)
Special discontinuities in nonlinearly elastic media
A. P. Chugainova Steklov Mathematical Institute of Russian Academy of Sciences, Moscow
Abstract:
Solutions of a nonlinear hyperbolic system of equations describing weakly nonlinear quasitransverse waves in a weakly anisotropic elastic medium are studied. The influence of small-scale processes of dissipation and dispersion is investigated. The small-scale processes determine the structure of discontinuities (shocks) and a set of discontinuities with a stationary structure. Among the discontinuities with a stationary structure, there are special ones that, in addition to relations following from conservation laws, satisfy additional relations required for the existence of their structure. In the phase plane, the structure of such discontinuities is represented by an integral curve joining two saddles. Special discontinuities lead to nonunique self-similar solutions of the Riemann problem. Asymptotics of non-self-similar problems for equations with dissipation and dispersion are found numerically. These asymptotics correspond to self-similar solutions of the problems.
Key words:
special discontinuities, generalized KdV-Burgers equation, self-similar Riemann problem, nonuniqueness of solutions.
Received: 06.09.2016
Citation:
A. P. Chugainova, “Special discontinuities in nonlinearly elastic media”, Zh. Vychisl. Mat. Mat. Fiz., 57:6 (2017), 1023–1032; Comput. Math. Math. Phys., 57:6 (2017), 1013–1021
Linking options:
https://www.mathnet.ru/eng/zvmmf10542 https://www.mathnet.ru/eng/zvmmf/v57/i6/p1023
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Abstract page: | 340 | Full-text PDF : | 52 | References: | 61 | First page: | 20 |
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