Microscopic Study of Pressure-Transfer Characteristics in the Solid Granule Medium Forming

Miao Yan Cao; Chang Cai Zhao; Hong Xiao

doi:10.4028/www.scientific.net/AMR.183-185.1752

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 183-185Microscopic Study of Pressure-Transfer...

Microscopic Study of Pressure-Transfer Characteristics in the Solid Granule Medium Forming

Abstract:

To reveal the pressure-transfer characteristics of the granular materials in the Solid Granule Medium Forming process, the stainless steel balls with diameter of 1 mm were selected as medium to conduct the axial compression experiment. The particle compression process was simulated by discrete element method, and then the variation law of the microstructure was analyzed from the perspective of force chain. The results showed that: In the gradual compression process of granule medium, its force chains distribution changes from the initial circular shape to the elliptical shape. As the stress increases, the force chains get denser and denser. In addition, the lateral pressure coefficient changes in power law with the compressive stress and it tends to be constant when the internal force chains structure gets stable.

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Periodical:

Advanced Materials Research (Volumes 183-185)

Pages:

1752-1756

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.183-185.1752

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Online since:

January 2011

Authors:

Miao Yan Cao, Chang Cai Zhao, Hong Xiao

Keywords:

Discrete Element Method (DEM), Force Chain, Lateral Pressure Coefficient, Solid Granule Medium Forming

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