Сибирский федеральный университет

Тип публикации: доклад, тезисы доклада, статья из сборника материалов конференций

Конференция: International Conference on Finite Difference Methods - Theory and Applications (FDM - T and A); Lozenetz, BULGARIA; Lozenetz, BULGARIA

Год издания: 2015

Идентификатор DOI: 10.1007/978-3-319-20239-6_37

Ключевые слова: Dynamics; Elasticity; Block medium; Cosserat continuum; Shock-capturing method; Parallel computational algorithm, block medium, cosserat continuum, dynamics, elasticity, parallel computational algorithm, shock-capturing method

Аннотация: Based on the equations of the dynamics of a piecewise-homogeneous elastic material, parallel computational algorithms are developed to simulate the process of stress and strain wave propagation in a medium consisting of a large number of blocks, interacting through compliant interlayers. For the description of waves in a block medium with thick interlayers the orthotropic couple-stress continuum theory, taking into account the symmetry of elastic properties relative to the coordinate planes, can be applied. By comparing the elastic wave velocities in the framework of piecewise-homogeneous model and continuum model, the simple method is obtained to estimate mechanical parameters of an orthotropic Cosserat continuum, modeling a block medium. In two-dimensional formulation of the orthotropic model, the computational algorithm and the program system are worked out for the analysis of propagation of elastic waves. The comparison showed good qualitative agreement between the results of computations of waves, caused by localized impulses, by the model of a block medium with compliant interlayers and the model of an orthotropic Cosserat continuum.

Журнал: Finite Difference Methods, Theory and Applications

Выпуск журнала: Vol. 9045

Номера страниц: 340-347

ISSN журнала: 03029743

Место издания: BERLIN

Издатель: SPRINGER-VERLAG BERLIN

• Sadovskaya (Inst Computat Modeling SB RAS, Krasnoyarsk 660036, Russia)
• Sadovskii V.M. (Vladimir M.)
• Pokhabova (Inst Computat Modeling SB RAS, Krasnoyarsk 660036, Russia)

• Web of Science Core Collection
• Scopus
• Ядро РИНЦ (eLIBRARY.RU)