Evaluation of the belt punching process efficiency based on the resistance force of the compressed material

Wojtkowiak, Dominik; Talaśka, Krzysztof; Wilczyński, Dominik

doi:10.1007/s00170-020-05819-4

Cited by 12 publications

(7 citation statements)

References 30 publications

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“…A further research direction is performing the actual tests and comparing them with the simulation test results. The tests carried out on the development of conveyor belt systems are still an up-to-date research subject, e.g., in the scope of improving work reliability [63], recognizing damage [64], limiting transport energy intensity [65], increasing usage safety [66][67][68], or testing the mechanical properties of transport belts made of innovative materials [69,70].…”

Section: Discussionmentioning

confidence: 99%

Computer Aided Modeling of Wood Chips Transport by Means of a Belt Conveyor with Use of Discrete Element Method

et al. 2020

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The effectiveness and precision of transporting wood chips on the transport trailer or hopper depends on an inclination angle, a conveyor belt speed, and length. In order to devise a methodology aiding designing and the selection of technical and performance parameters (aiding the settings of conveyor belt sub-assemblies), the authors carried out the simulation tests concerning wood chips transport on the belt conveyor and their outlet. For the purposes of these tests, a simulation model was performed in the Rocky DEM (discrete element method) software in the numerical analysis environment and compared to analytical tests. The tested wood chips were taken from cherry plum branches chipping processes (Prunus cerasifera Ehrh. Beitr. Naturk. 4:17. 1789 (Gartenkalender 4:189-204. 1784)), out of which seven basic fractions were separated, which differed mainly in terms of their diameter from 5 mm to 50 mm and the length of 150 mm. The article presents the results of wood chips ejection distance in the form of the 3D functions of wood chips ejection distance depending on the conveyor belt inclination angle and belt speed. The results are presented for five conveyor belt lengths (1 m, 2 m, 3 m, 4 m, 5 m). The tests also involved the conveyor belt inclination angle in the range from 10° to 50° and the belt velocity in the range from 1 m/s2 to 5 m/s2. The numerical test results demonstrate higher average values of wood chips ejection distance than designated in the analytical model. The average arithmetical difference in the results between the numerical and analytical model is at the level of 13%.

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Section: Discussionmentioning

confidence: 99%

Computer Aided Modeling of Wood Chips Transport by Means of a Belt Conveyor with Use of Discrete Element Method

et al. 2020

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“…The material of the belt is defined using the parameters presented in Table 1 [ 11 ]. Using the Johnson–Cook model for simulation of the material failure had already been justified in [ 8 , 11 , 23 , 24 , 25 , 26 , 27 ]. The plasticity of the material is defined using the Yield Point of 120 MPa for the PI punch and 80 MPa for the PO punch.…”

Section: Methodsmentioning

confidence: 99%

A Coupled Eulerian-Lagrangian Simulation and Tool Optimization for Belt Punching Process with a Single Cutting Edge

et al. 2021

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The objective of this paper is to analyze the belt punching process with the use of a single cutting edge and discuss the influence of geometrical features of the piercing punch on the perforation force. Two basic shapes of the piercing punch with a single cutting edge were tested: tools with the blade pointing inside or pointing outside. The analytical models of the stress distribution in the shearing cross sections were derived for both punches. The presented model, along with the series of empirical tests and Coupled Eulerian-Lagrangian simulation, was used for finding the effective geometry of the piercing punch with a single cutting edge for the belt perforation. The geometrical parameters taken into consideration for the tool optimization were the following: angle of the blade, thickness of the wall and diameter of the piercing punch cutting edge. The obtained results show that changing these parameters has a significant influence on the perforation force necessary to execute the machining process and affects the quality of the holes in the perforated belts. The most important geometrical features of the hollow sharpened punch are the angle and the direction of the blade, which change the force distribution and, as a result, the mechanics of the process.

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“…Endless belts with a circular cross section and a diameter of several millimeters, made of thermoplastic elastomers, are widely used in the driving and transporting systems in industrial machines [1], similar to perforated transporting belts with a rectangular cross section [2]. That is why they are often offered by leading belt manufacturers [3].…”

Section: Source Of the Research Problemmentioning

confidence: 99%

Experimental approach to modeling of the plasticizing operation in the hot plate welding process

Wałęsa

Talaśka

Wilczyński

et al. 2021

Archiv.Civ.Mech.Eng

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The paper discusses the topic of butt welding of polyurethane drive belts by the hot plate method in the context of modeling the process of this technological operation. Based on the analysis of the butt welding process, a series of studies of the thermomechanical properties of the material from which the belt is made has been planned. The results will be used for mathematical modeling of the welding process, and in particular its most important phase: the plasticizing operation. On this basis, the study of the compression of cylindrical specimens taken from the belt has been performed at two different speeds. Their result is the relationship between the compressive stress σc and the modulus of longitudinal elasticity Ec at compression and: deformation εc, temperature value T, as well as the compressive velocity vc. In the next step, dynamic viscosity η of the belt material was determined based on the results of dynamic thermomechanical analysis. The research work culminated in the attempts to plasticize the material on a hot plate, in conditions similar to the process of industrial welding. These studies were performed at different speeds vpl, resulting in the correlation between the force required for plasticizing Fpl and the value of the speed of the belt end vpl relative to the hot plate heated to a temperature Tp. The obtained results will be used to formulate a mathematical model of plasticizing the material, based on the selected mechanical deformation models.

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Evaluation of the belt punching process efficiency based on the resistance force of the compressed material

Cited by 12 publications

References 30 publications

Computer Aided Modeling of Wood Chips Transport by Means of a Belt Conveyor with Use of Discrete Element Method

Computer Aided Modeling of Wood Chips Transport by Means of a Belt Conveyor with Use of Discrete Element Method

A Coupled Eulerian-Lagrangian Simulation and Tool Optimization for Belt Punching Process with a Single Cutting Edge

Experimental approach to modeling of the plasticizing operation in the hot plate welding process

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