Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5013818 | Engineering Fracture Mechanics | 2017 | 11 Pages |
Abstract
The microcrack network that develops during the cooling stage of magnesia spinel refractories production process contributes to its heterogeneity. To simulate the fracture process of a magnesia spinel refractory subjected to a wedge splitting test, a heterogeneous continuum model with random distribution of the properties was developed. The tortuous crack path and fracture process development were investigated numerically and compared to experimental digital image correlation observation. Bilinear strain softening curves were used to depict the fracture behaviour of the refractories. With an inverse identification approach, the fracture parameters including tensile strength, ultimate displacement, and total specific fracture energy were obtained. The method is the basis for a realistic simulation of crack propagation in refractories used for industrial applications.
Related Topics
Physical Sciences and Engineering
Engineering
Mechanical Engineering
Authors
Yajie Dai, Dietmar Gruber, Shengli Jin, Harald Harmuth,