Journal of the Korean Society of Manufacturing Process Engineers (한국기계가공학회지)

The Korean Society of Manufacturing Process Engineers (한국기계가공학회)
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A New Rigid Rod Model for the Discrete Element Method to Analyze the Dynamic Behavior of Needle-shaped Powder

침상형 입자의 동적 거동 해석을 위한 강체 막대형 이산요소법 모델 개발

  • 안성해 ((주) 유니크 만해기술연구소) ;
  • 박준영 (금오공과대학교 기계설계공학과)
  • Received : 2017.03.24
  • Accepted : 2017.04.11
  • Published : 2017.04.30
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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%.

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References

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Cited by

  1. Discrete Element Method using the Superposed Rigid-Rod Model for the Dynamic Behavior of Needle-Shaped Powder with a High Aspect Ratio vol.17, pp.3, 2018, https://doi.org/10.14775/ksmpe.2018.17.3.022
  2. Discrete Element Method of the Dynamic Behavior of Flaky Particles Using the Rigid Plate Model vol.2, pp.1, 2020, https://doi.org/10.1007/s42493-020-00036-3