DEM–FEM Coupling Simulation of the Transfer Chute Wear with the Dynamic Calibration DEM Parameters

Fangping Ye,Yuezhang Qiang,Xiang Fu,Weijie Jiang

doi:10.3390/pr9101847

Fangping Ye, Yuezhang Qiang + Show 2 more

Open Access

https://doi.org/10.3390/pr9101847

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Abstract

Transfer chutes for bulk material conveying systems have significant importance in ship loading and unloading and are ‘worn’ from large mass flow and fast granular material flow conditions. In this investigation, the impact forces of different granular materials on the transfer chute wear process are considered; the DEM–FEM (Discrete Element Method–Finite Element Method) coupling method was used to calculate the wear and the deformation of the transfer chute. The stress–strain and cumulative contact energy from three different granular materials were analyzed under different working conditions. The results show that the wear, stress–strain, and cumulative contact energy of the transfer chute are closely related to the belt speed, the chute inclination angle, and the types of granular materials; the impact force and the stress–strain on the transfer chute achieves maximum value under a 4 m/s belt speed condition; meanwhile, with the increase of belt speed by 0.5 m/s, the wear of the transfer chute increases 25% and the deformation increases 20%; the shape variable, wear area, and normal cumulative contact capacity of the transfer chute are the smallest with a transfer chute inclination angle from 40° to 45°.

Highlights

Transfer chutes are widely used in port particle material conveying systems, including the transfer and transportation of particle materials, such as coal mines, iron ore, soybean, and corn
Sun et al [6,7] calibrated the coal particle discrete element method (DEM) parameters using the static angle of repose, and the effects of the blade tilt angle on the screw conveying performance were investigated
Liu [8,9] determined the wheat DEM parameters using the static angle of the repose response surface method

Summary

Introduction

Transfer chutes are widely used in port particle material conveying systems, including the transfer and transportation of particle materials, such as coal mines, iron ore, soybean, and corn. The research shows that the static experimental calibration DEM parameters are difficult in regard to simulating the dynamic movements of particles. 2e.1x.pDeriismcreetnetEdleemviecnet, Manedthtohden the DEM–FEM coupling method was used to investigate the detaTilhseofptahretitcrlaenissfedrecshcuritbeewd ebaarsperdocoensst.he DEM originally proposed by Cundall and Strack [11]; the discontinuous body was separated into a collection of rigid particles; e2a.cNh upmaretircilcealsaMtiseftiheoddtohleogmyotion equation, and the time-step iterative method was used to2.1so. CoefCfioceieSfSfinooctlliioieddfnsssttdoadfteeirncnesfssrititiitcytyuti(to(kiknoggnμ//msm,p3p3)) Coefficient of rolling friction μr,pp TTaCaCbbololeeefffi22fi.c.cDiDieeEnEnMtMtoofPPfrasaortrlaaalmitmnicgeefttrfeerirrciscst.it.oionnμμs,rp,pgg

DEM Parameters Dynamic Calibration

Wear Coefficient Calibration with the Wear Tester

Chute Cumulative Contact Energy