Wear modelling of soil ripper tine in sand and sandy clay by discrete element method

Katinas, Egidijus; Chotěborský, R.; Linda, M.; Jankauskas, Vytenis

doi:10.1016/j.biosystemseng.2019.10.022

Cited by 26 publications

(15 citation statements)

References 38 publications

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“…The soil particle, chisel tool parts and interaction properties are set from the literature. 5 The chisel tool motion was 2.78 m•s −1 . Working depth 0.25 m. Material assigned as structural steel (density, Young's modulus, Poisson's ratio).…”

Section: Methodology and Materialsmentioning

confidence: 99%

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Volume/shear work ratio influence on wear and stress of soil chisel tine modelled by DEM

Katinas

Choteborsky

2021

Proceedings of the Institution of Mechanical Engineers, Part J:

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Agricultural equipment is working in very high-stress conditions. However, it has a significant influence on the wear losses of soil processing parts. Chisel is operating at 30 cm working depth at a maximum of 12 km·h−1 working speed. Due to unpredictable soil conditions, chisel tines suffer high wear losses. It leads to time consumption and cost expenses during the soil preparation period. Wear resistance, and agronomical requirements (working depth, loosening of soil) are the main criteria of agricultural equipment producers. The discrete element method is a solution that simulates soil as sphere shape particles with soil properties. Wear results reveal the change of parts shape, acting forces, and stresses during the simulation in the virtual soil bin. The used Rocky DEM software uses a parameter C (volume/shear work ratio) to describe wear intensity, which varies for different geometry. Chisel tine geometry should be divided into sections with varied parameter C according to stress acting on the surface. The test conditions can be used for future wear analysis of varied tool geometry and protection (sintered tungsten carbide plates, hard-faced surface, etc.) agricultural tools to compare its durability in different soil conditions.

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Section: Methodology and Materialsmentioning

confidence: 99%

“…[1][2][3][4] However, soil processing affects crop productivity and highly influences the wear of agricultural tools' longevity. 5 Agricultural equipment is working at very high-stress conditions. 6,7 It has a direct influence on the wear losses of soil processing parts.…”

Section: Introductionmentioning

confidence: 99%

Volume/shear work ratio influence on wear and stress of soil chisel tine modelled by DEM

Katinas

Choteborsky

2021

Proceedings of the Institution of Mechanical Engineers, Part J:

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“…In EDEM [23], the geometrical plastic deformation technique is related to the Archard wear model [24] based on a mesh deformation approach [25]. The Archard wear model is widely used both for the particles and geometries [14,16,17,19,20,[25][26][27], such as the evaluation of the wear of ballast and abrasive grain [26,27], the prediction of the wear of mill lifters [28] and local failure prediction of abrasive wear on tipper bodies [29]. The Archard wear model can be denoted as Equation (3).…”

Section: Geometrical Plastic Deformation Techniquementioning

confidence: 99%

“…Rojas et al [ 14 ] studied the wear in mining hoppers and obtained comparable results with the measurements. In addition, Kalácska et al [ 15 ], Katinas et al [ 16 ] and Powell et al [ 17 ] studied the wear behaviour of steel used in agricultural tines, wear of soil rapper tin, high speed steel and liner revolution in ball mills based on the discrete element method, respectively. On the other hand, some researchers are interested in surface deformation caused by wear.…”

Section: Introductionmentioning

confidence: 99%

Pin-on-Disc Modelling with Mesh Deformation Using Discrete Element Method

2022

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The pin-on-disc test is a standard sliding wear test used to analyse sliding properties, including wear contour and wear volume. In this study, long-term laboratory test performance is compared with a short-term numerical model. A discrete element method (DEM) approach combined with an Archard wear model and a deformable geometry technique is used. The effect of mesh size on wear results is evaluated, and a scaling factor is defined to relate the number of revolutions between the experiment and the numerical model. The simulation results indicate that the mesh size of the disc has a significant effect on the wear contour. The wear depth and wear width follow a normal distribution after experiencing a run-in phase, while the wear volume has a quadratic relation with the number of revolutions. For the studied material combination, the calibration of the wear coefficient shows that the wear volume of the pin-on-disc test accurately matches the simulation results for a minimum of eight revolutions with a wear coefficient lower than 2 × 10−11𝑃a−1.

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“…Inspired by the bionic design method, a convex pattern surface is introduced [6] and optimized [7] to reduce the sliding wear of the surfaces of bulk solids handing equipment by using a discrete element method (DEM). Many works [8][9][10][11][12][13][14][15][16] have been completed on the investigation of sliding wear caused by the bulk material based on the DEM method, while other studies [9,[11][12][13][14]16] whilwhile seldom focused on the influence of particle size on sliding wear. Although the previous studies have shown that the convex pattern surface can significantly reduce sliding wear compared with the flat surface, the effect of particle size is still unknown.…”

Section: Introductionmentioning

confidence: 99%

The Influence of Particle Size on Sliding Wear of a Convex Pattern Surface

2022

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Sliding wear of bulk handling equipment (e.g., shovel bucket, mill and transfer chute) can be dramatically reduced by using a convex pattern surface compared to a flat surface, by adjusting the flow behavior of particles moving along the convex pattern surface. To study the effect of particle size relative to the dimensions of the convex pattern surface, a coarse graining technique is applied. Comparisons of bulk flow and wear behavior between the convex pattern and flat surfaces illustrate the two-sided effect of the convex pattern surface on sliding wear. The bulk flow behavior indicates that the particle size has a minor effect on the velocity and angular velocity of particles for the flat surface, while it has a significant effect on those of the convex pattern surface. The wear results show that the particle size has negligible influence on the sliding wear of a flat surface and a linear relationship with the sliding wear of the convex pattern surface. The convex pattern surface can reduce the sliding wear through influencing the flow behavior of the bulk material when the equivalent radius of the convex is larger than r50 of particles. This research reveals the relationship between the dimensions of the convex pattern and the particle size on the sliding wear caused by the interaction between bulk material and bulk handling equipment. The relationship should be carefully considered for the applications of the convex pattern surface to bulk handling equipment.

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Wear modelling of soil ripper tine in sand and sandy clay by discrete element method

Cited by 26 publications

References 38 publications

Volume/shear work ratio influence on wear and stress of soil chisel tine modelled by DEM

Volume/shear work ratio influence on wear and stress of soil chisel tine modelled by DEM

Pin-on-Disc Modelling with Mesh Deformation Using Discrete Element Method

The Influence of Particle Size on Sliding Wear of a Convex Pattern Surface

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