지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
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이 논문의 연구 히스토리 (7)
2018
2017
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초록· 키워드
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In many industries, particle packing is adopted quite frequently. In the particle packing process, the Discrete Element Method (DEM) can analyze the multi-collision of particles efficiently. Two types of contact models are frequently used for the DEM. One is the linear spring model, which has the fastest calculation time, and the other is the Hertz–Mindlin model, which is the most frequently used contact model employing the DEM. Meanwhile, very tiny particles in the micrometer order are used in modern industries. In the micro length order, surface force is important to decreased particle size. To consider the effect of surface force in this study, we performed a simulation with the Hertz–Mindlin model and added the Johnson–Kendall–Roberts (JKR) theory depicting surface force with surface energy. In addition, three contact models were compared with several parameters. As a result, it was found that the JKR model has larger residual stress than the general contact models because of the pull-off force. We also validated that surface force can influence particle behavior if the particles are small.
목차
ABSTRACT
1. 서론
2. 접촉모델
3. 단일 충돌 시뮬레이션
4. 시뮬레이션 결과
5. 결론
REFERENCES
참고문헌 (7)
참고문헌 신청
Wikipedia / Rhodium powder pressed melted
Johnson, K. L. / 1985 / Cambridge Publication / Cambridge Publication :84~125
Johnson, K. L. / 1971 / Surface Energy and the Contact of Elastic Solids / Proceedings of the Royal Society of London. Series A, Mathematical and Physical Sciences 324(1558):301~313
Tsunazawa, Y. / 2016 / Contact force model including the liquid-bridge force for wet-particle simulation using the discrete element method / Advanced Powder Technology 27:652~660
Hu, G. / 2011 / On the determination of the damping coefficient of non-linear spring-dashpot system to model hertz contact for simulation by discrete element method / Journal of computers 6(5)
Johnson, K. L. / 1985 / Cambridge Publication / Cambridge Publication :84~125
Johnson, K. L. / 1971 / Surface Energy and the Contact of Elastic Solids / Proceedings of the Royal Society of London. Series A, Mathematical and Physical Sciences 324(1558):301~313
Tsunazawa, Y. / 2016 / Contact force model including the liquid-bridge force for wet-particle simulation using the discrete element method / Advanced Powder Technology 27:652~660
Hu, G. / 2011 / On the determination of the damping coefficient of non-linear spring-dashpot system to model hertz contact for simulation by discrete element method / Journal of computers 6(5)
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UCI(KEPA) : I410-ECN-0101-2019-581-000468456