The Model of Dynamic Inelastic Behavior of Brittle Solids Based on the Concept of Finite Fracture Time; AIP Conference Proceedings; Vol. 2051 : Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2018 (AMHS’18)

The Model of Dynamic Inelastic Behavior of Brittle Solids Based on the Concept of Finite Fracture Time; AIP Conference Proceedings; Vol. 2051 : Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2018 (AMHS’18)

Detalhes bibliográficos
Parent link:AIP Conference Proceedings
Vol. 2051 : Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2018 (AMHS’18).— 2018.— [020102, 4 p.]
Autor Corporativo: Национальный исследовательский Томский политехнический университет (ТПУ)
Outros Autores: Grigoriev A. S. Aleksandr, Shilko E. V. Evgeny, Skripnyak V. A. Vladimir, Psakhie S. G. Sergey Grigorievich
Resumo:Title screen
The paper presents the development of recently proposed kinetic model of dynamic mechanical behavior of brittle solids. The model uses the ideas of kinetic theory of strength to describe the inelastic deformation and fracture. The main feature of the modified dynamic model is the introduction of two relaxation times, which determine the patterns of inelastic deformation under dynamic loading, including the dependences of the values of the cohesion and strain hardening coefficient on the strain rate. These relaxation times have the meaning of a generation time of damage of the smallest ranks and a characteristic time of formation of a system of local damage and cracks of the greatest rank. The advantage of a developed dynamic model is the possibility of its implementation within different conventional models of inelasticity of brittle solids. In the paper we implemented the kinetic model within the classical "quasi-static" Nikolaevsky's plasticity model (non-associated plastic flow rule with the plasticity criterion in the form of Mises- Schleicher). We verified the model and determined its parameters by the example of high-strength concrete. The developed dynamic model can be implemented within the framework of various Lagrangian numerical methods (including finite and discrete element methods) using an explicit integration scheme.
Режим доступа: по договору с организацией-держателем ресурса
Idioma:inglês
Publicado em: 2018
Assuntos:
электронный ресурс
труды учёных ТПУ
динамическое поведение
неупругое поведение
твердые тела
разрушения
механическое поведение
хрупкие тела
неупругие деформации
релаксация
Acesso em linha:https://doi.org/10.1063/1.5083345
Formato: Recurso Eletrônico Capítulo de Livro
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=659175

Registros relacionados

Registros relacionados