TY - JOUR

T1 - Determination of the influence of particle spatial distribution and interface heterogeneity on tensile fracture of ordinary refractory ceramics by applying discrete element modelling

AU - Du, Weiliang

AU - Jin, Shengli

AU - Gruber, Dietmar

N1 - Publisher Copyright: © The Author(s) 2024.

PY - 2024/3/21

Y1 - 2024/3/21

N2 - The microstructures and local characteristics of ordinary refractory ceramics are heterogeneous. The discrete element (DE) method was used to consider the variation in particle spatial distributions and statistically distributed interface properties (uniform, Weibull) between elements. In addition, three Weibull distributions with different shape parameters were evaluated. A uniaxial tensile test was used to study the effects of particle spatial distributions and interface property distributions on the stress–strain curve, tensile strength, and crack propagation. The results of the test show that the particle spatial distribution significantly influences crack propagation and fracture patterns, and the interface condition plays an important role in mechanical responses, crack propagation, and fracture mechanisms and patterns. The discrete element modelling of uniaxial tensile and compressive tests shows that brittle materials exhibit asymmetric mechanical responses to compression and tension loading including static Young’s modulus.

AB - The microstructures and local characteristics of ordinary refractory ceramics are heterogeneous. The discrete element (DE) method was used to consider the variation in particle spatial distributions and statistically distributed interface properties (uniform, Weibull) between elements. In addition, three Weibull distributions with different shape parameters were evaluated. A uniaxial tensile test was used to study the effects of particle spatial distributions and interface property distributions on the stress–strain curve, tensile strength, and crack propagation. The results of the test show that the particle spatial distribution significantly influences crack propagation and fracture patterns, and the interface condition plays an important role in mechanical responses, crack propagation, and fracture mechanisms and patterns. The discrete element modelling of uniaxial tensile and compressive tests shows that brittle materials exhibit asymmetric mechanical responses to compression and tension loading including static Young’s modulus.

KW - Asymmetric mechanical properties

KW - Discrete element method

KW - Interface property

KW - Refractories

KW - Uniaxial tensile test

UR - http://www.scopus.com/inward/record.url?scp=85188243058&partnerID=8YFLogxK

U2 - 10.1007/s40571-024-00716-z

DO - 10.1007/s40571-024-00716-z

M3 - Article

AN - SCOPUS:85188243058

VL - 11.2024

SP - 1887

EP - 1901

JO - Computational particle mechanics

JF - Computational particle mechanics

SN - 2196-4378

IS - 5

ER -