Materials Selection and Design Options Analysis for a Centrifugal Fan Impeller in a Horizontal Conveyor Dryer

Zinchenko, A. K.; Baiul, K. V.; Krot, Pavlo; Khudyakov, A. Yu.; Ващенко, С. В.; Banasiewicz, Aleksandra; Wroblewski, Adam C.

doi:10.3390/ma14216696

Cited by 12 publications

(8 citation statements)

References 35 publications

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“…The difference in the mechanical properties Based on the results described above, the findings of this study provide the greatest application potential in the industry because this method is very practical and can be employed to join fluid mechanical components [45], transmission shafts [46], aircraft components, aerospace components, automotive components, or axle shafts using FRW. To further evaluate the tensile strength of FRW of dissimilar polymer rods fabricated by AM technology, test specimens can be prepared according to standards from ASTM International [47][48][49]. Thus, the research results can provide more application value in the industry.…”

Section: Resultsmentioning

confidence: 99%

Weld Strength of Friction Welding of Dissimilar Polymer Rods Fabricated by Fused Deposition Modeling

Kuo

Lee

2022

Polymers

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Friction welding (FRW) is a promising method for joining cylindrical components of dissimilar and similar polymers or metals. In particular, FRW is capable of generating defect-free welds. Fused deposition modeling (FDM) has been widely employed in the automotive industry, ranging from lightweight tools, testing models, and functional parts. Conventionally, dissimilar parts fabricated by FDM are joined by glue. However, distinct disadvantages of this approach include both low joining strength and low joining efficiency. Hitherto, little has been reported on the characterizations of weld strength of FRW of dissimilar parts fabricated by FDM. In addition, FRW of dissimilar polymeric materials is a difficult task because different polymers have different physical, rheological, and mechanical properties. In this study, the effects of welding revolution on the weld strength of friction welding dissimilar parts fabricated by FDM are investigated experimentally. It was found that the average flexural strength of dissimilar polymer rods fabricated by FRW is about 1.52 times that of dissimilar polymer rods fabricated by gluing. The highest flexure strength can be obtained by FRW using polylactic acid (PLA) and PC (polycarbonate) rods. The average impact strength of dissimilar polymer rods fabricated by FRW is about 1.04 times that of dissimilar polymer rods joined by gluing. The highest impact strength can be obtained by FRW using PLA to PLA rods.

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Section: Resultsmentioning

confidence: 99%

Weld Strength of Friction Welding of Dissimilar Polymer Rods Fabricated by Fused Deposition Modeling

Kuo

Lee

2022

Polymers

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“…The stresses acting on the upper surface of the right push arm behind the tilt cylinder are also greater than those in other areas. Since the maximum stresses do not coincide with welded joints, the influence caused by the change of material properties can be neglected in the later analysis [33]. The maximum stresses of the push arms are due to the large bending moment caused by the instantaneous acceleration of the blade lifting.…”

Section: Co-simulation Resultsmentioning

confidence: 99%

“…It can be concluded that the rear parts of the supporting plates connected with the pitch arm and tilt cylinder on the push arms are most prone to generate cracks. Therefore, these positions should be optimized to reduce stress concentration [33].…”

Section: Fatigue Life Calculationmentioning

confidence: 99%

Fatigue Analysis of Dozer Push Arms under Tilt Bulldozing Conditions

et al. 2022

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Tilt bulldozing generates unbalanced loads on two push arms, which leads to the service lives of the two push arms being different. Because the push arms rotate in triaxial directions during tilt bulldozing, it is difficult to accurately analyze the fatigue life of the push arm with one specific boundary condition and loading history. Therefore, a fatigue analysis of the push arms under tilt bulldozing conditions is proposed based on co-simulation of RecurDyn-EDEM-AMESim in this paper. The control of tilt bulldozing conditions is realized automatically according to the tilt angle and blade depth. The dynamic loads of the push arms are accurately calculated in this virtual model. Subsequently, the stress–time histories are obtained to investigate the fatigue lives of push arms. Both the overall damage and the initiation positions of the cracks are predicted herein. It is determined that the fatigue lives of the right and left push arms are 7,317.84 h and 39,381.89 h, respectively. Thus, the life of the push arm on the blade’s tilted side is reduced by 81.42% compared to the other side. Additionally, experimental tests are conducted to verify the accuracy of the virtual model. Analysis results indicate that the strains of the push arms according to the virtual simulation are close to those measured in the experiments.

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“…Due to the high heterogeneity of the mining excavations, it is also challenging to develop a detailed geometric model for CFD simulations. Unlike unrestricted flows [3], geometry model in this case will define the computational domain. The model approach based on regular solids will again be a major simplification that will affect the results.…”

Section: Introductionmentioning

confidence: 99%

Comparison of Hexcore and Poly-Hexcore computational meshes in the aspect of air flow modeling based on the actual geometry of mining excavations

Wróblewski,

Macek,

Bansiewicz

et al. 2024

IOP Conf. Ser.: Earth Environ. Sci.

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Discrete models are used in industry for many applications. In one of the most frequently used Finite Element Method (FEM) for Computational Fluid Dynamics (CFD) calculations, discrete models may be two-dimensional or three-dimensional. 2D models are used as a simplification to achieve satisfied results in the shortest computational time. 3D models, on the other hand, are used for more complex calculations. These models constitute a representation of real-world objects that have been appropriately simplified to make the calculations accurate and correct. The calculation time of a 3D model is significantly longer compared to a 2D model. For this reason, to reduce the calculation time, different types of simplifications and various types of discrete model meshes are used. In this paper, the authors made a comparison of two computational meshing technologies: Hexcore and Poly-Hexcore in the aspect of airflow modeling in mining excavations using CFD. The geometry considered in this case came from real-world excavations captured by laser scanning in the Gertruda Slant, Zloty Stok. Point cloud data was processed through feature extraction, which was subsequently utilized to create structured models of mining excavations. The results of the simulations show that taking into account such a diverse and complicated geometry and its significant lengths, reaching tens of kilometers, better results are obtained with the use of Poly-Hexcore mesh. This type of mesh allows simulations to be performed with similar accuracy in a shorter computation time. Utilizing a more modern type of mesh makes work more dynamic, which is of particular importance when conducting numerical simulations of air distribution in large and complex computational domains.

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Materials Selection and Design Options Analysis for a Centrifugal Fan Impeller in a Horizontal Conveyor Dryer

Cited by 12 publications

References 35 publications

Weld Strength of Friction Welding of Dissimilar Polymer Rods Fabricated by Fused Deposition Modeling

Weld Strength of Friction Welding of Dissimilar Polymer Rods Fabricated by Fused Deposition Modeling

Fatigue Analysis of Dozer Push Arms under Tilt Bulldozing Conditions

Comparison of Hexcore and Poly-Hexcore computational meshes in the aspect of air flow modeling based on the actual geometry of mining excavations

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