| FLOW PROPERTIES OF COHESIVE NANOPOWDERS |
| |
| 引用本文： | JuergenTomas. FLOW PROPERTIES OF COHESIVE NANOPOWDERS[J]. 中国颗粒学报, 2003, 1(6): 231-241. DOI: 10.1016/S1672-2515(07)60001-3 |
| |
| 作者姓名： | JuergenTomas |
| |
| 作者单位： | MechanicalProcessEngineering,ProcessEngineenngDepartment,TheOtto-von-Guericke-UniversityMagdeburg,Universitaetsplatz2,D-39106Magdeburg,Germary |
| |
| 摘 要： | The fundamentals of cohesive powder consolidation and flow behaviour using a reasonable combination of particle and continuum mechanics are explained.By means of the model “stiff particles with soft contacts”,the influence of elastic-plastic repulsion in particle contacts is demonstrated.With this as the physical basis,the stationary yield locus,instantaneous yield loci and consolidation loci,flow function and compression function are presented.The flow properties of a very cohesive titania nanopowder (ds=200nm) are shown.These models are used to evaluate shear cell test results as constitutive functions for computer aided apparatus design for reliable powder flow.
|
| 关 键 词： | 粒子力学 流动行为 附着力 粉末流 粘性粉末 范德瓦尔斯力 |
| 收稿时间： | 2003-08-26 |
FLOW PROPERTIES OF COHESIVE NANOPOWDERS |
| |
| Jürgen Tomas. FLOW PROPERTIES OF COHESIVE NANOPOWDERS[J]. China Particuology, 2003, 1(6): 231-241. DOI: 10.1016/S1672-2515(07)60001-3 |
| |
| Authors: | Jürgen Tomas |
| |
| Affiliation: | 1. Laboratory of Fluid Dynamics and Technical Flows (LSS/ISUT), University of Magdeburg “Otto von Guericke”, Universitätsplatz 2, Magdeburg D-39106, Germany;2. Laboratory of Fluid Mechanics, Helwan University, Cairo, Egypt;1. Hunan Provincial Key Defense Laboratory of High Temperature Wear-resisting Materials and Preparation Technology, Hunan University of Science and Technology, Xiangtan 411201, China;2. State Key Laboratory for Advanced Metals and Materials, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China;3. Materials Division, PINSTECH, Post Office Nilore, Islamabad, Pakistan;4. School of Materials Science and Engineering, Nanchang Hang Kong University, Nanchang 330063, China |
| |
| Abstract: | The fundamentals of cohesive powder consolidation and flow behaviour using a reasonable combination of particle and continuum mechanics are explained. By means of the model "stiff particles with soft contacts", the influence of elastic-plastic repulsion in particle contacts is demonstrated. With this as the physical basis, the stationary yield locus, instantaneous yield loci and consolidation loci, flow function and compression function are presented. The flow properties of a very cohesive titania nanopowder (ds=200 nm) are shown. These models ara used to evaluate shear cell test results as constitutive functions for computer aided apparatus design for reliable powder flow. |
| |
| Keywords: | particle mechanics adhesion force van der Waals forces constitutive models cohesive powder flow properties |
| 本文献已被 CNKI 维普 万方数据 ScienceDirect 等数据库收录！ |
|
