Scaling of the powder compaction process

作者：Moghaddam Majid; Darvizeh Rooholamin^*; Davey Keith; Darvizeh Abolfazl

来源：International Journal of Solids and Structures, 2018, 144: 192-212.

DOI：10.1016/j.ijsolstr.2018.05.002

• Powder compaction
• Multi-particle finite element method
• Drucker-Prager Cap model
• Finite similitude
• Scaled experiment

Scaled experimentation plays an important role in the analysis of many material processes and is particularly critical to powder compaction and related processes. A peculiar uncertainty with scaling is the extent to which scaled compaction is representative of the full-scale, powder-compaction process. Although it is possible to perform compaction experimentation combined with simulation using discrete and continuum models applied to both scaled and unscaled processes, this only provides limited insight and does not provide a systematic means to assess the limitation of scaling.
A new approach to scaling has appeared in the recent literature, which is founded on the distortion of space making it now feasible to systematically evaluate the effects of scaling on powder-compaction processes. This paper examines numerically discrete and continuum models along with experimental evidence to provide scaling rules for practical use. Correction curves are presented in the paper to correct for scaling effects in scaled experimentation.

• 出版日期2018-7