PSI - Issue 35

Available online at www.sciencedirect.com Available online at www.sciencedirect.com Sci nceD rect Structural Integrity Procedia 00 (2021) 000–000 Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2021) 000–000

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Procedia Structural Integrity 35 (2022) 188–195

© 2021 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of IWPDF 2021 Chair, Tuncay Yalçinkaya In the present study, elastic and strength properties of three-phase Al 2 O 3 –ZrB 2 –SiC composite are investigated based on numerical modeling. Representative volume element (RVE) consisting of Al 2 O 3 matrix, pores, and ZrB 2 and SiC inclusions is built based on the experimental data. The uniaxial tension loading of the RVE model under plane strain conditions is considered. The relations of an isotropic elastic-plastic medium with the Drucker–Prager yield criterion are used as constitutive equations. The determination of the effective mechanical properties of the composite is based on the analysis of numerical averaged stress-strain curves. The simulation results demonstrate that the cracks nucleate in the regions of high stress concentration caused by the pore shape. The alumina matrix fractures due to the criterion based on the tensile pressure, while the fracture of inclusions occurs when the criterion based on the accumulated inelastic strain is fulfilled. The influence of the fraction of SiC inclusions on the effective elastic properties of the composite material was studied. It was shown that the elastic moduli weakly depend on the increase of SiC volume fraction in the considered range from 0 % to 34 %. © 2021 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of IWPDF 2021 Chair, Tuncay Yalçinkaya Keywords: multicomponent composite; ceramics; numerical simulation; fracture; effective mechanical properties. In the present study, elastic and strength properties of three-phase Al 2 O 3 –ZrB 2 –SiC composite are investigated based on num rical mod ing. Represe ta ive volum element (RVE) consisting of Al 2 O 3 atr x, pores, and ZrB 2 and SiC i clusions is built based on the exp rimental data. The uniaxial tens on loading of the RVE model under plane strain conditions is considered. Th relat ons of an isotropic elastic-plastic me um wi the Drucker–Prag yield criterion are used as constitutive equations. The determination of the effective mechanical properties of the compos s b s d on the analysis of numer cal averag d stress-strain curv s. The si ulation results demonstrat that the cracks nucleate in the regions of high stress concentration caused by the pore sh pe. The alumina matrix fr ctur s due to the crit r on bas d the tensile pre sure, while the fracture of inclusion occurs when the criterion b sed on th accumula d i el tic strain is fulfilled. The influence o the fractio of SiC in l sions o effect ve elastic prop rties of the compo ite material was studied. It was shown t at the elastic moduli weakly dep nd on th increase f SiC volum fraction n the considered range from 0 % t 34 %. © 2021 The Authors. Published by ELSEVIER B.V. This is an open acce s article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review u der re ponsibility of IWPDF 2021 hair, Tu cay Yalçinkay K ywords: multicomponent composite; ceramics; numerical simulation; fracture; effective mechanical properties. 2nd International Workshop on Plasticity, Damage and Fracture of Engineering Materials The Modeling of the Fracture of Three-Phase Ceramic Composite V. A. Zimina*, I. Yu. Smolin Institute of Strength Physics and Materials Science SB RAS, 2/4 Akademicheskii avenue, Tomsk, 634055, Russia 2nd International Workshop on Plasticity, Damage and Fracture of Engineering Materials The Modeling of the Fracture of Three-Phase Ceramic Composite V. A. Zimina*, I. Yu. Smolin Institute of Strength Physics and Materials Science SB RAS, 2/4 Akademicheskii avenue, Tomsk, 634055, Russia Abstract Abstract

1. Introduction 1. Introduction

The development of materials with improved physical and mechanical properties is one of the important tasks of modern materials science. Currently, there is an increasing interest in multicomponent composite materials due to The development of materials with improved physical and mechanical properties is one of the important tasks of modern materials science. Currently, there is an increasing interest in multicomponent composite materials due to

* Corresponding author. Tel.: +7-382-228-6876 ; fax: +7-382-249-2576 . E-mail address: miva@ispms.ru * Corresponding author. Tel.: +7-382-228-6876 ; fax: +7-382-249-2576 . E-mail address: miva@ispms.ru

2452-3216 © 2021 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of IWPDF 2021 Chair, Tuncay Yalçinkaya 2452-3216 © 2021 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review u der responsibility of IWPDF 2021 hair, Tuncay Yalçinkay

2452-3216 © 2021 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of IWPDF 2021 Chair, Tuncay Yal ç inkaya 10.1016/j.prostr.2021.12.064