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http://dx.doi.org/10.14775/ksmpe.2017.16.2.0149

A New Rigid Rod Model for the Discrete Element Method to Analyze the Dynamic Behavior of Needle-shaped Powder  

An, Seong-Hae (Manhae Research Inst., UNICK co.)
Park, Junyoung (Dept. Mech. Dsgn. Eng., Kumoh Nat. Inst. Tech.)
Publication Information
Journal of the Korean Society of Manufacturing Process Engineers / v.16, no.2, 2017 , pp. 149-154 More about this Journal
Abstract
Numerous studies of the dynamic behavior of powders have been performed by Discrete Element Method (DEM). The behavior of powders can be analyzed using the DEM assuming that the powder is composed of spherical particles. Moreover, the assumption of spherical particle reduces the computing time significantly. However, the biggest problem with this assumption is the real shape of the particles. Some types of particles, such as calcium carbonate and colloidal copper, are needle shaped. Thus, analysis based on spherical particles can produce errors because of the incorrect assumption. In this research, we developed a new model to simulate needle-shaped particles using the DEM. In the model, a series of particles are connected and regarded as a rod. There is no relative motion among the particles. Thus, the behavior of the rod is rigid motion. To validate the developed model, we carried out the drop-and-bounce test with different initial angles. The results showed negligible error of less than 2%.
Keywords
Powder; Needle-Shaped Particle; Discrete Element Method;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
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