The normal and oblique impact of three types of wet granules

被引：57
|
作者：
Mueller, Peter [1 ]
Antonyuk, Sergiy [2 ]
Stasiak, Mateusz [3 ]
Tomas, Juergen [1 ]
Heinrich, Stefan [2 ]
机构：
[1] Otto VonGuericke Univ Magdegurg, Inst Proc Engn, D-39106 Magdeburg, Germany
[2] Hamburg Univ Technol, Inst Solids Proc Engn & Particle Technol, D-21073 Hamburg, Germany
[3] Polish Acad Sci Lublin, Inst Agrophys, PL-20290 Lublin 27, Poland
来源：
GRANULAR MATTER | 2011年 / 13卷 / 04期
关键词：
Coefficient of restitution; Moisture content; Material behaviour; Impact test; PLASTIC SPHERES; COEFFICIENT; RESTITUTION;
D O I：
10.1007/s10035-011-0256-5
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Impact tests against a hardened steel plate have been carried out to obtain the coefficient of restitution of three types of spherical granules. The dominant elastic gamma-Al(2)O(3), the elastic-plastic zeolite 4A and the dominant plastic sodium benzoate have been chosen as granule samples. An electromagnetic canon has been constructed to accelerate the granules and to measure the normal coefficient of restitution. The moisture content of the granules has been varied so that the pore saturation ranges between of S = 0-1. Thereby, the influence of the moisture content on the normal coefficient of restitution could be determined. A free fall apparatus, on which the impact angle is changeable in the range of I similar to(A) = 0-80A degrees, has been used to investigate the tangential coefficient of restitution. A high speed digital camera has been used to record the events of impact and rebound. The record frequency of the camera has been varied between 4,000 and 8,000 frames per second.
引用
收藏
页码：455 / 463
页数：9
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