当前位置: X-MOL 学术Powder Technol. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Influence of particle size distribution width on GFA index of uniaxially compressed granular materials
Powder Technology ( IF 5.2 ) Pub Date : 2021-01-01 , DOI: 10.1016/j.powtec.2020.09.020
Ragunanth Venkatesh , Miha Brojan , Igor Emri , Arkady Voloshin , Edvard Govekar

Abstract This study investigates the influence of particle size distribution (PSD) width on the internal friction and internal pressure ratio of granular materials, and the related flowability of such material when uniaxially compressed in a closed volume. For this purpose, an optical granular friction analyzer (O-GFA) was used to evaluate the granular friction analyzer (GFA) index, which may be related to the internal friction and internal pressure ratio. By examining bronze powder samples with 3 different PSD widths it was shown that as PSD width increases, the load independent GFA index increases, internal friction decreases and the internal pressure ratio remains constant. Furthermore, our study confirms that, determining the GFA index using the O-GFA for characterizing the flowability of uniaxially compressed granular material is an alternative to traditional methods, which require the individual properties of granular materials i.e. internal friction and internal pressure ratio to be determined through two separate tests.

中文翻译:

粒度分布宽度对单轴压缩颗粒材料GFA指数的影响

摘要 本研究研究了粒度分布(PSD)宽度对颗粒材料内摩擦和内压比的影响,以及在封闭体积内单轴压缩时该材料的相关流动性。为此,使用光学颗粒摩擦分析仪(O-GFA)评估颗粒摩擦分析仪(GFA)指数,该指数可能与内摩擦和内压比有关。通过检查具有 3 种不同 PSD 宽度的青铜粉末样品,表明随着 PSD 宽度的增加,与载荷无关的 GFA 指数增加,内摩擦减小,而内压比保持不变。此外,我们的研究证实,
更新日期:2021-01-01
down
wechat
bug