Тип публикации: доклад, тезисы доклада, статья из сборника материалов конференций
Конференция: International Conference Numerical Analysis and Applications (NAA); Lozenetz, BULGARIA; Lozenetz, BULGARIA
Год издания: 2013
Ключевые слова: Dynamics; granular medium; elasticity; plastic shock wave; discontinuous solution; variational inequality; computational algorithm
Аннотация: Mathematical models of the dynamics of elastic-plastic and granular media are formulated as variational inequalities for hyperbolic operators with one-sided constraints describing the transition of a material in plastic state. On this basis a priori integral estimates are constructed in characteristic cones of operators, from whichПоказать полностьюfollows the uniqueness and continuous dependence on initial data of solutions of the Cauchy problem and of the boundary-value problems with dissipative boundary conditions. With the help of an integral generalization of variational inequalities the relationships of strong discontinuity in dynamic models of elastic-plastic and granular media are obtained, whose analysis allows us to calculate velocities of shock waves and to construct discontinuous solutions. Original algorithms of solution correction are developed which can be considered as a realization of the splitting method with respect to physical processes.
Журнал: NUMERICAL ANALYSIS AND ITS APPLICATIONS, NAA 2012
Выпуск журнала: Vol. 8236
Номера страниц: 479-486
ISSN журнала: 03029743
Место издания: BERLIN
Издатель: SPRINGER-VERLAG BERLIN