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

Weiliang Du, Shengli Jin, Dietmar Gruber

Publikation: Beitrag in FachzeitschriftArtikelForschungBegutachtung

Abstract

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.
OriginalspracheEnglisch
Seiten (von - bis)1887-1901
Seitenumfang15
Fachzeitschrift Computational particle mechanics
Jahrgang11.2024
Ausgabenummer5
DOIs
PublikationsstatusVeröffentlicht - 21 März 2024

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