Analysis of Wear-Resistant Surface with Pangolin Scale Morphology by DEM Simulation

Zhang, Rui; Yu, Hai-Bin; Pang, Hao; Chen, Guangming; Tai, Wei-Hsun

doi:10.3390/app10082896

Cited by 3 publications

(4 citation statements)

References 12 publications

(17 reference statements)

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“…Tong et al [2] learned from the Copris ochus Motschulsky, and designed bio-inspired embossed surfaces consisting of an array of convex domes, and proved the abraded volume reductions ranged between 12.1% and 58.1%. Zhang et al [24] established an abrasive wear system composed of pangolin scale and abrasive sand based on the discrete element method (DEM), and proved that the geometrical shape of the pangolin scale is helpful for decreasing the boundary stress, especially with the wear rate decreasing when the velocity is higher than a certain degree. As shown in Figure 6, after 80 h of accumulative test time and the total wear distance of 6.09 × 10 5 m, the micro-thorns were well preserved.…”

Section: Abrasion Loss and Worn Surface Micromorphologymentioning

confidence: 99%

“…The wear behavior of clam shell was studied, and the abrasive wear resistance mechanism was investigated. Zhang et al [24] learned from the pangolin scale and established a DEM model of the arranged scales; then, the abrasive wear behaviors were analyzed. Chen et al [25] studied the surface morphology of soil animals, designed a stripe-like non-smooth surface, and carried out friction and wear tests.…”

Section: Introductionmentioning

confidence: 99%

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EDEM Investigation and Experimental Evaluation of Abrasive Wear Resistance Performance of Bionic Micro-Thorn and Convex Hull Geometrically Coupled Structured Surface

et al. 2021

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Procambarus clarkii was found to have excellent anti-wear performance against abrasive materials. To improve the wear resistance performance of the soil-engaging component of agricultural machinery, in this study, the micro-thorn and convex hull coupled geometrical structured surfaces inspired from the cephalothorax exoskeleton of the Procambarus clarkii was selected as the bionic prototype. By adopting bionic engineering techniques, three types of novel geometrical structured surfaces were proposed, which were bionic single, double and triple micro-thorn coupled convex hull surfaces (Bionic Type 2, 3 and 4, respectively). The anti-abrasive wear properties of these proposed geometrical surfaces were compared with a conventional bionic convex hull structured surface (Bionic Type 1) and a surface without any structures (smooth). Abrasive wear tests were conducted by using a rotational abrasive wear testing system. The accumulative test time was 80 h and the total wear distance was 6.09 × 105 m. By adopting the EDEM software (discrete element modeling), the Archard Wear model was selected to simulate the wear behavior of five different surfaces. In addition, the wear mechanisms of different surfaces were investigated. The results showed that the smooth surface suffered the most severe abrasive were, the abrasion loss reached 194.1 mg. The anti-abrasive properties of bionic geometric structured non-smooth surfaces were greatly improved; the reduction in terms of abrasion losses ranged between 20.4% and 94.1%, as compared with the smooth surface. The wear resistance property of micro-thorn and convex hull coupled structured surfaces were greatly improved as compared with convex hull and smooth surface. Bionic Type 3 was found to have the best anti-abrasive wear property: the abrasion loss was 11.5 mg. The wear morphology was observed by a scanning electron microscope. Smooth surface was characterized with wide, large size of grinding debris, while the bionic non-smooth surface featured narrow and small size abrasive dust. The results obtained from EDEM simulation agreed well with those of the aforementioned real scenario tests. It was revealed that the wear areas of the micro-thorn and convex hull coupled structured surface were mainly concentrated on the edge of convex hull and micro-thorn that faced the coming direction of particle flow. The geometric structure of the convex hull had beneficial effects on changing the movement behavior of particles, which means the stream of particle flow could be altered from a sliding to rolling state. Consequently, the ploughing and cutting phenomena of particles that act on the surfaces were greatly mitigated. Moreover, after being coupled with micro-thorns, the anti-abrasive wear preparty of the bionic convex hull geometrical structured surface was further improved. The rebound angle of particle flow that contacted the bionic micro-thorn coupled convex hull structured surface was greater than that of the conventional convex hull surface. Therefore, the dispersion effect of particle flow was further enhanced, since the movement behavior of the subsequent impact particle flow was altered. As a result, the wear of the bionic non-smooth surface was further reduced. This biconically inspired novel micro-thorn and convex hull coupled structured surface could provide theatrical and technical references to enhance the wear resistance performance of the soil-engaging component of agricultural machinery and mitigate the problem of abrasive wear failure.

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Section: Abrasion Loss and Worn Surface Micromorphologymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

EDEM Investigation and Experimental Evaluation of Abrasive Wear Resistance Performance of Bionic Micro-Thorn and Convex Hull Geometrically Coupled Structured Surface

et al. 2021

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“…Through qualitative analysis of abrasive grain morphology, contact bond field, and contact force chain, light injuries and shedding of abrasive wear behavior were observed. This study provides a new approach to abrasive wear on non-smooth surfaces [29,30].…”

Section: Introductionmentioning

confidence: 99%

Characterization of Microscopic Damage Evolution of Functional Groove in Cageless Bearings

et al. 2023

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Bearings with partial function grooves as cageless bearings related to magnetic floating bearing protection have characteristics, such as fast offsetting of the impact force caused by rotor fall, and they gradually become important parts of ultra clean and cryogenic transportation systems. However, the functional failure mechanism of the bearing, which is caused by functional groove wear, is not clear. Therefore, this paper establishes a force–motion intrinsic model of particles inside the functional groove, which is based on the discrete element method, which it itself combined with the functional groove damage evolution trend analysis. Then, a hyper-quadratic surface model of inter-particle contact is established to simulate the time-varying friction coefficient of the functional groove by combining particles of different sizes to form particle clusters. Additionally, as the boundary condition, EDEM is used to solve the contact motion state of rolling element rolling through the functional groove for one week to obtain the overlap between particles and contact force change law. The results show that the wide side of the functional groove wears more seriously than the narrow side, and the rolling element leaves the functional groove with more impact than when it enters the functional groove, and the functional groove wears more seriously. In this paper, through the study of local functional groove wear of cageless ball bearing, we propose to characterize the damage extension of functional groove by using the number of particle fracture and motion trend in discrete element method, and this study provides theoretical guidance for the design of cageless bearings.

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“…In [17], the analysis of wear resistance based on the Discrete Element Method (DEM), in an abrasive wear system composed of pangolin scale models and abrasive sand was established. Their wear behaviors were discussed regarding the contact bond fields, the contact force chains, the velocity fields and the displacement fields of the abrasive wear system.…”

mentioning

confidence: 99%

Advances in Surface Modification of the Materials

Chmielewski

2022

Applied Sciences

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Analysis of Wear-Resistant Surface with Pangolin Scale Morphology by DEM Simulation

Cited by 3 publications

References 12 publications

EDEM Investigation and Experimental Evaluation of Abrasive Wear Resistance Performance of Bionic Micro-Thorn and Convex Hull Geometrically Coupled Structured Surface

EDEM Investigation and Experimental Evaluation of Abrasive Wear Resistance Performance of Bionic Micro-Thorn and Convex Hull Geometrically Coupled Structured Surface

Characterization of Microscopic Damage Evolution of Functional Groove in Cageless Bearings

Advances in Surface Modification of the Materials

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