A Mesomechanical Analysis of the Deformation and Fracture in Polycrystalline Materials with Ceramic Porous Coatings; AIP Conference Proceedings; Vol. 1683 : Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures

A Mesomechanical Analysis of the Deformation and Fracture in Polycrystalline Materials with Ceramic Porous Coatings; AIP Conference Proceedings; Vol. 1683 : Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures

Bibliographic Details
Parent link:AIP Conference Proceedings
Vol. 1683 : Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures.— 2015.— [020020, 4 p.]
Corporate Author: Национальный исследовательский Томский политехнический университет (ТПУ) Институт физики высоких технологий (ИФВТ) Кафедра физики высоких технологий в машиностроении (ФВТМ) Научно-образовательная лаборатория "Динамическое моделирование и контроль ответственных конструкций" (НОЛ ДМиК ОК)
Other Authors: Balokhonov R. R. Ruslan Revovich, Zinoviev A. V., Romanova V. A. Varvara Aleksandrovna, Batukhtina E. E.
Summary:Title screen
The special features inherent in the mesoscale mechanical behavior of a porous ceramic coating-steel substrate composite are investigated. Microstructure of the coated material is accounted for explicitly as initial conditions of a plane strain dynamic boundary-value problem solved by the finite difference method. Using a mechanical analogy method, a procedure for generating a uniform curvilinear finite difference computational mesh is developed to provide a more accurate description of the complex grain boundary geometry. A modified algorithm for generation of polycrystalline microstructure of the substrate is designed on the basis of the cellular automata method. The constitutive equations for a steel matrix incorporate an elastic-plastic model for a material subjected to isotropic hardening. The Hall-Petch relation is used to account for the effect of the grain size on the yield stress and strain hardening history. A brittle fracture model for a ceramic coating relying on the Huber criterion is employed. The model allows for crack nucleation in the regions of triaxial tension. The complex inhomogeneous stress and plastic strain patterns are shown to be due to the presence of interfaces of three types: coating-substrate interface, grain boundaries, and pore surfaces.
Режим доступа: по договору с организацией-держателем ресурса
Language:English
Published: 2015
Subjects:
электронный ресурс
труды учёных ТПУ
анализ
деформация
разрушения
поликристаллические материалы
керамические покрытия
пористая керамика
Online Access:http://dx.doi.org/10.1063/1.4932710
Format: Electronic Book Chapter
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=644863

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