Discrete Element Method Modeling of the Influence of Gravity During Functional Ceramics Material Compaction Process

doi:10.3724/SP.J.1077.2010.01071

Journal of Inorganic Materials ›› 2010, Vol. 25 ›› Issue (10): 1071-1075.DOI: 10.3724/SP.J.1077.2010.01071

• Research Paper • Previous Articles Next Articles

Discrete Element Method Modeling of the Influence of Gravity During Functional Ceramics Material Compaction Process

ZOU Xia^{1, 2}, LI Guo-Rong¹, TAN Yuan-Qiang², JIANG Sheng-Qiang², ZHENG Liao-Ying², ZENG Jiang-Tao²

(1. Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China; 2. School of Mechanical Engineering, Xiangtan University, Xiangtan 411105, China)

Received:2010-01-25 Revised:2010-04-08 Published:2010-10-20 Online:2010-09-26
Supported by:
National Nature Science Foundation of China (50875224); Key Project of Science and Technology Commission of Shanghai Municipality (09JC1414802); New Century Excellent Talents in University (NCET06-0708)

Abstract

Abstract: Compaction process of the functional ceramic materials were dynamically simulated by discrete element method (DEM), and the particles distribution, stress and porosity of the green compact under the actions of gravity and microgravity were also analyzed. The results showed that under the action of gravity, the distribution of different size particles was inhomogeneous, a substantial part of small size particles were found concentrated near the upper punch, while under the action of microgravity, the heterogeneity of particles was significantly reduced. Compared with microgravity condition, the distribution of stress gradients was larger under the gravity condition, and the stress near the upper and low punches was lager than that at the middle region, and the distribution gradient of the porosity was also larger.

Key words: DEM, functional ceramics, gradient, particles distribution

CLC Number:

TB24

ZOU Xia, LI Guo-Rong, TAN Yuan-Qiang, JIANG Sheng-Qiang, ZHENG Liao-Ying, ZENG Jiang-Tao. Discrete Element Method Modeling of the Influence of Gravity During Functional Ceramics Material Compaction Process[J]. Journal of Inorganic Materials, 2010, 25(10): 1071-1075.

References

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Discrete Element Method Modeling of the Influence of Gravity During Functional Ceramics Material Compaction Process

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