Particle Directional Conveyance under Longitudinal Vibration by considering the Trough Surface Texture: Numerical Simulation Based on the Discrete Element Method

Chen, Huazhi; Jiang, Shengyuan; Liu, Rongkai

doi:10.1155/2018/8260462

Cited by 8 publications

(6 citation statements)

References 40 publications

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“…The results revealed that the translation and rotation of a part could be governed by tuning the offset angle and sinusoidal excitation of the actuator through the asymmetric vibrational orbit of the platform. Chen et al [12] analyzed the particle conveyance mechanism using a discrete element method (DEM). In this case, an asymmetric force was achieved, which led to particle directional conveyance, where the velocity increases with the increase in vibration time.…”

Section: Introductionmentioning

confidence: 99%

Transportation of Objects on an Inclined Plane Oscillating in the Longitudinal Direction Applying Dynamic Dry Friction Manipulations

El Banna,

Liutkauskienė,

Lukoševičius

et al. 2024

Applied Sciences

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A transportation system requires an asymmetry to achieve objects’ motion on an oscillating surface. Transportation methods based on vibrational techniques usually employ different types of asymmetries, such as temporal (time) asymmetry, kinematic asymmetry, wave asymmetry or power asymmetry. However, transporting an object on an inclined angle requires a relatively high net frictional force over each period of vibrational cycles due to the gravitational potential energy exerted on the object. This paper investigates the transportation of an object upward on an inclined plane that harmonically oscillates in its longitudinal direction. The novelty of this research is attributed to the upward motion of the object on the inclined plane, which is achieved by creating an additional asymmetry of the system through dry friction dynamic manipulations. For this reason, periodic dynamic dry friction manipulations have been employed to create the asymmetry of frictional conditions, resulting in a net frictional force that outweighs the gravitational force. A mathematical model has been developed using the Lagrange method, which describes the moving object’s motion. Moreover, the theoretical findings and results confirmed that the object’s velocity and direction can be controlled by dynamic dry friction manipulations. To demonstrate the technical feasibility of the proposed method, an experimental investigation was carried out where the results demonstrated that the control parameters significantly influence the characteristics of the directional motion of the moving object. This transportation method is beneficial for various modern industries engaged in transportation and manipulation tasks with objects spanning a broad range of sizes, including those operating at small scales for applications in lab-on-a-chip technology, micro-assembly lines, micro-feeder systems and other delicate component manipulation systems. The presented research advances the classical theories of vibrational transportation on inclined surfaces.

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Section: Introductionmentioning

confidence: 99%

Transportation of Objects on an Inclined Plane Oscillating in the Longitudinal Direction Applying Dynamic Dry Friction Manipulations

El Banna,

Liutkauskienė,

Lukoševičius

et al. 2024

Applied Sciences

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“…Piatkowski et al [11] analysed the angular positioning process of cuboidal objects with the use the system of two oblique friction forces fields created by conveyor belts. Chen et al studied [12] the mechanism of particle directional conveyance in a trough with finlike asperities under longitudinal vibrations by applying numerical simulations based on the discrete element method. They determined that the asymmetric force induced by the finlike asperities and its cumulative effect over time influenced the particle directional conveyance.…”

Section: Introductionmentioning

confidence: 99%

Analysis on Conveying of Miniature and Microparts on a Platform Subjected to Sinusoidal Displacement Cycles with Controlled Dry Friction

Kilikevičius

Fedaravičius

Daukantienė

et al. 2022

mech

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This paper presents a novel method for convey-ing of miniature and microparts on a subjected to sinusoi-dal displacement cycles in the horizontal direction when the effective coefficient of dry friction between the part and the platform is periodically being controlled. Hereby, the required dynamic directionality is achieved via the system asymmetry created by periodic alteration of the effective coefficient of dry friction between the micropart and the platform. A mathematical model of conveying process is developed and solved numerically to determine the influence of frictional properties, friction control and sinusoidal excitation parameters on the conveying process characteristics. It was found that the velocity and direction of conveying can be easily controlled in a wide range by changing the phase shift between the function of the ef-fective dry friction coefficient and the function of horizon-tal sinusoidal displacement cycles as well as the duration of effective dry friction coefficient reduction. To test the theoretical findings in practise, an experimental setup for micropart conveying with controlled dry friction was cre-ated and build. The experimental results revealed the func-tional capabilities of the proposed method for micropart conveying by demonstrating how the velocity, direction and step size are controlled by regulating the parameters of friction control and sinusoidal excitation.The proposed method can be practically used in conveying, feeding, manipulation and assembly systems for miniature and microparts in the mechatronics, elec-tronic and other industries.

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“…22 Harbin Institute of Technology took the lead in China on the development of electromagnetic actuated penetrators for lunar soil profile detection and initiated the impact penetrating detection of other extraterrestrial objects. 23,24 Since 2009, the team has carried out plenty of pre-research work on the impact penetrator especially in the period when it undertook the third stage tasks for lunar sampling in National Lunar Exploration Project. 25,26 Research topics on peristaltic tunneling penetrators, impact-actuated penetrators, and auger drilling and coring techniques have been carried out successively.…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation on interaction process between impact penetrator and lunar soil particles for lunar subsurface exploration

Shen

Deng

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part G:

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Unmanned in-situ exploration is an important technique to study the physical and mechanical parameters of lunar composition and evolution. The impact penetrator is an effective device for in-situ detection of the lunar soil profile at predetermined depth. Because of the lack of real lunar soil samples, it is very difficult to study and evaluate the performance of the impact penetrator. In order to truly reflect the interaction between the impact penetrator and lunar soil particles, a simulation model of the lunar soil body was established by means of discrete-element analysis, and the model parameters were matched and verified by the experimental method. Based on this model, the interaction behaviors between the penetrators with different head configurations and the lunar soil body were simulated. The stress field distribution in the lunar soil body and particle movement patterns during the penetrating process were revealed, which reflects the working principle and performance of the penetrator. The numerical simulation on the interaction process between the impact penetrator and lunar soil particles provides a feasible and effective method for the design and optimization of the penetrator, which will contribute to the development of lunar subsurface in-situ exploration technologies.

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Particle Directional Conveyance under Longitudinal Vibration by considering the Trough Surface Texture: Numerical Simulation Based on the Discrete Element Method

Cited by 8 publications

References 40 publications

Transportation of Objects on an Inclined Plane Oscillating in the Longitudinal Direction Applying Dynamic Dry Friction Manipulations

Transportation of Objects on an Inclined Plane Oscillating in the Longitudinal Direction Applying Dynamic Dry Friction Manipulations

Analysis on Conveying of Miniature and Microparts on a Platform Subjected to Sinusoidal Displacement Cycles with Controlled Dry Friction

Numerical simulation on interaction process between impact penetrator and lunar soil particles for lunar subsurface exploration

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