Particle Directional Conveyance under Longitudinal Vibration by considering the Trough Surface Texture: Numerical Simulation Based on the Discrete Element Method
Particles can move directionally in a trough with finlike asperities under longitudinal vibrations. Here, we present an analysis of the particle conveyance mechanism and the influence of the asperity shape on the particle conveyance capacity by employing a numerical simulation based on the discrete...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2018-01-01
|
| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2018/8260462 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849397741341376512 |
|---|---|
| author | Huazhi Chen Shengyuan Jiang Rongkai Liu Weiwei Zhang |
| author_facet | Huazhi Chen Shengyuan Jiang Rongkai Liu Weiwei Zhang |
| author_sort | Huazhi Chen |
| collection | DOAJ |
| description | Particles can move directionally in a trough with finlike asperities under longitudinal vibrations. Here, we present an analysis of the particle conveyance mechanism and the influence of the asperity shape on the particle conveyance capacity by employing a numerical simulation based on the discrete element method (DEM). A dynamic-static matching method is proposed to characterize the three microcontact parameters in the simulation: the restitution coefficient, static friction coefficient, and rolling friction coefficient. The simulation shows that the asymmetric force induced by the finlike asperities and its cumulative effect over time lead to the particle directional conveyance. The conveyance velocity increases with increasing vibration time and is related to the median coordination number. The asperity height and slope inclination angles determine the trough shape and distance between two asperities directly. An undersized or oversized distance reduces the steady conveyance velocity. We find the optimal distance to be between one and two particle diameters. |
| format | Article |
| id | doaj-art-a87e18aa12464cf0b89623bb50096bd7 |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-a87e18aa12464cf0b89623bb50096bd72025-08-20T03:38:54ZengWileyShock and Vibration1070-96221875-92032018-01-01201810.1155/2018/82604628260462Particle Directional Conveyance under Longitudinal Vibration by considering the Trough Surface Texture: Numerical Simulation Based on the Discrete Element MethodHuazhi Chen0Shengyuan Jiang1Rongkai Liu2Weiwei Zhang3State Key Laboratory of Robotics and System, Harbin Institute of Technology, No. 92, Xidazhi Street, Nangang District, Harbin 150001, ChinaState Key Laboratory of Robotics and System, Harbin Institute of Technology, No. 92, Xidazhi Street, Nangang District, Harbin 150001, ChinaState Key Laboratory of Robotics and System, Harbin Institute of Technology, No. 92, Xidazhi Street, Nangang District, Harbin 150001, ChinaState Key Laboratory of Robotics and System, Harbin Institute of Technology, No. 92, Xidazhi Street, Nangang District, Harbin 150001, ChinaParticles can move directionally in a trough with finlike asperities under longitudinal vibrations. Here, we present an analysis of the particle conveyance mechanism and the influence of the asperity shape on the particle conveyance capacity by employing a numerical simulation based on the discrete element method (DEM). A dynamic-static matching method is proposed to characterize the three microcontact parameters in the simulation: the restitution coefficient, static friction coefficient, and rolling friction coefficient. The simulation shows that the asymmetric force induced by the finlike asperities and its cumulative effect over time lead to the particle directional conveyance. The conveyance velocity increases with increasing vibration time and is related to the median coordination number. The asperity height and slope inclination angles determine the trough shape and distance between two asperities directly. An undersized or oversized distance reduces the steady conveyance velocity. We find the optimal distance to be between one and two particle diameters.http://dx.doi.org/10.1155/2018/8260462 |
| spellingShingle | Huazhi Chen Shengyuan Jiang Rongkai Liu Weiwei Zhang Particle Directional Conveyance under Longitudinal Vibration by considering the Trough Surface Texture: Numerical Simulation Based on the Discrete Element Method Shock and Vibration |
| title | Particle Directional Conveyance under Longitudinal Vibration by considering the Trough Surface Texture: Numerical Simulation Based on the Discrete Element Method |
| title_full | Particle Directional Conveyance under Longitudinal Vibration by considering the Trough Surface Texture: Numerical Simulation Based on the Discrete Element Method |
| title_fullStr | Particle Directional Conveyance under Longitudinal Vibration by considering the Trough Surface Texture: Numerical Simulation Based on the Discrete Element Method |
| title_full_unstemmed | Particle Directional Conveyance under Longitudinal Vibration by considering the Trough Surface Texture: Numerical Simulation Based on the Discrete Element Method |
| title_short | Particle Directional Conveyance under Longitudinal Vibration by considering the Trough Surface Texture: Numerical Simulation Based on the Discrete Element Method |
| title_sort | particle directional conveyance under longitudinal vibration by considering the trough surface texture numerical simulation based on the discrete element method |
| url | http://dx.doi.org/10.1155/2018/8260462 |
| work_keys_str_mv | AT huazhichen particledirectionalconveyanceunderlongitudinalvibrationbyconsideringthetroughsurfacetexturenumericalsimulationbasedonthediscreteelementmethod AT shengyuanjiang particledirectionalconveyanceunderlongitudinalvibrationbyconsideringthetroughsurfacetexturenumericalsimulationbasedonthediscreteelementmethod AT rongkailiu particledirectionalconveyanceunderlongitudinalvibrationbyconsideringthetroughsurfacetexturenumericalsimulationbasedonthediscreteelementmethod AT weiweizhang particledirectionalconveyanceunderlongitudinalvibrationbyconsideringthetroughsurfacetexturenumericalsimulationbasedonthediscreteelementmethod |