Computational finite element modeling of stress-state- and strain-rate-dependent failure behavior of ceramics with experimental validation. Issue 9 (1st May 2023)

• Record Type: Journal Article
• Authors: Zaiemyekeh, Zahra; Li, Haoyang; Sayahlatifi, Saman; Ji, Min; Zheng, Jie; Romanyk, Dan L.; Hogan, James D.
• Is Part Of: Ceramics international. Volume 49:Issue 9(2023)Part A
• Page Start: 13878
• Page End: 13895
• Publication Date: 2023-05-01
• Subjects: Alumina (Al2O3) ceramic -- Finite element modeling (FEM) -- Dynamic behavior -- Indirect tension experiments -- Compression–shear experiments; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2022.12.268
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: This study investigates the stress-state- and strain-rate-dependent behavior of CeramTec ALOTEC 98% alumina ( Al 2 O 3 ) ceramic through experimentally validated finite element (FE) modeling. As the constitutive material model, a rate-dependent viscosity-regularized phenomenological model (JH2-V model) was implemented through a VUMAT subroutine in ABAQUS software. The FE model was informed and validated with the data for indirect tension and compression–shear tests under dynamic rates both quantitatively (i.e., stress–strain histories and lateral strain–axial strain curves) and qualitatively (i.e., manifestation and accumulation of damage). The validated model was leveraged to study the effect of the JH2-V model regularization parameters, mesh sensitivity, and bulking across different stress states. Additionally, by modeling the compression–shear specimen with different angles, the effect of shear on the material response was quantitatively investigated through the definition of a volumetric average damage parameter and shear strain history. Altogether, the outcomes of this study have implications for the computational design and development of ceramic-based structures in higher-scale applications (e.g., impact).