The effect of compound particles – pairs of particles rigidly connected to each other and moment stresses on failure of granulate materials in compression was investigated by using discrete element modelling software Particle Flow Code 2D. Microscopic shear failure was excluded by setting shear strength of particle bonds 7 times higher than the tensile strength. It was found that by adding compound particles the peak stress, crack damage stress and Young’s modulus increase and the fracture pattern changed. When moment stress was ignored the peak stress increased 4 times and localisation in fracture patterns was not observable. This suggests that it is the effect of tensile moment stresses can induce the formation of fracture patterns of the shear band type.
|Title of host publication||Proceedings of the 10th International Conference on Structural Integrity and Failure|
|Subtitle of host publication||Advances in Materials and Structures|
|Editors||A. Kotousov, J. Ma|
|Place of Publication||Australia|
|Publisher||Australian Fracture Group Inc.|
|Publication status||Published - 2016|
|Event||International Conference on Structural Integrity and Failure: Advances in Materials and Structures - Adelaide, Australia|
Duration: 1 Jan 2011 → 14 Jul 2016
|Conference||International Conference on Structural Integrity and Failure|
|Period||1/01/11 → 14/07/16|
Xu, Y., Pasternak, E., & Dyskin, A. (2016). Numerical Study of the Effect of Compound Particles and Moment Stresses on the Failure of Granulate Materials in Compression. In A. Kotousov, & J. Ma (Eds.), Proceedings of the 10th International Conference on Structural Integrity and Failure: Advances in Materials and Structures (pp. 177-181). Australia: Australian Fracture Group Inc..