Discrete Element Modelling of Cold Crushing Tests Considering Various Interface Property Distributions in Ordinary Refractory Ceramics
Research output: Contribution to journal › Article › Research › peer-review
Authors
Organisational units
Abstract
The microstructures and local properties of ordinary refractory ceramic
materials are heterogeneous and play a role in the fracture behavior of
ordinary refractory ceramic materials. It is important to consider them
in numerical modeling. Herein, the discrete element (DE) method was
applied to determine the influences of heterogeneity of ordinary
refractory ceramic materials by applying statistically distributed
interface properties (uniform, Weibull), as opposed to constant
interface properties, among the elements. Uniaxial cold crushing tests
were performed as a case study. A reasonable loading strain rate for
receiving quasi-static loading conditions and computation efficiency was
evaluated. The loading wall displacement was recorded to present the
stress–strain curves of cold crushing tests. Furthermore, the effects of
the interface property distributions on the load/displacement curve,
fracture energy, cold crushing strength, and fracture events were
investigated. The results reveal that the DE method is a promising
method for visualizing and quantifying the post–peak fracture process
and crack events in ordinary refractory ceramics. Different interface
property distributions contribute to significant variances in the
load/displacement curve shape and fracture pattern. The heterogeneity of
ordinary refractory ceramics can be further determined by comparing the
experimental curves and fracture propagation along with an inverse
identification approach.
Details
Original language | English |
---|---|
Article number | 7650 |
Number of pages | 18 |
Journal | Materials |
Volume | 15.2022 |
Issue number | 21 |
DOIs | |
Publication status | Published - 31 Oct 2022 |