Development of methods for optimizing the parameters of the body of a fixed jaw crusher

Zabolotnyi, Kostiantyn; Panchenko, Olena

doi:10.1051/e3sconf/201910900120

Cited by 3 publications

(4 citation statements)

References 3 publications

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“…Thus, specialists from the Department of Engineering and Design in Machinery Industry are constantly studying the subject of analysis of thinwalled elements of machines with rib reinforcement, using computer modeling methods and physical experiments to test constructions [1,2]. Professor V. P. Franchuk, together with his students, conducts research into the field of vibration engineering, in particular, he solves the issue of modernizing the designs of screen feeders for heavy industry [3,4].…”

Section: Introductionmentioning

confidence: 99%

A methodological approach to assessing the durability of welded structures of screens using SolidWorks Simulation software

Shkut

2023

Nauk. visn. nat. hirn. univ.

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Purpose. To develop methodological recommendations for studying the characteristics of screen welded assemblies of ГВЧ-31 С type using specialized tools of the SolidWorks Education Edition software package. Methodology. The methodology for analyzing welds when designing a vibrator fixation system is based on the use of current software tools, in particular SolidWorks Simulation in combination with SolidWorks Motion, as well as the HOT SPOT STRESS technology. To analyze the accuracy of determining the dynamic loads arising during the screen operation, the results of modeling using the SolidWorks Motion program are compared with those obtained by traditional methods using the Lagrange equation of the second kind. The computation discrepancy is within 10 %. Findings. It has been determined that it is rational to analyze welds using the SolidWorks Education Edition software shell, taking into account the least profitable option, namely, when their edges are not finished. Furthermore, during solid-state modeling, the formation of a cavity in the weld is simulated in the form of a gap between the welded elements. The stress-strain state analysis of welded constructions using the Finite Element Method has revealed that when the computational mesh cell size is reduced, the stress value increases significantly, which indicates the result singularity and the need for further application of the HOT SPOT STRESS method. In the course of research, it has been determined that the highest stresses in welds occur on the central rib. The duration of use of welded joints is more than 2·106 cycles. Originality. For the first time, the methodology has been substantiated for determining the service life of welded elements of screen constructions using the latest computer analysis tools. The method makes it possible to calculate the dynamic forces arising in constructions performing oscillatory movements, as well as to analyze the stress-strain state of welds using the HOT SPOT STRESS technology and assess their service life. Practical value. It has become possible to implement the method for calculating the stress-strain state of welds in the design of a vibrator fixation system and assessing their service life, which is important for analyzing and determining the parameters of various vibrating machines. The results derived from the investigation were incorporated by the local entity, Ukrprommineral, to modernize the screens.

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Section: Introductionmentioning

confidence: 99%

A methodological approach to assessing the durability of welded structures of screens using SolidWorks Simulation software

Shkut

2023

Nauk. visn. nat. hirn. univ.

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“…At the same time, mathematical models of dynamic processes that arise in the engine of a dump truck in extreme conditions have been created for the first time [3]. The parameters of the fixed jaw of the crusher [4,5] are also optimized, and the stress state of the vibratory feeder under shock loads has been studied [6]. The results of scientific research in the field of mechanics of new designs of mine hoisting machines are also of great practical importance.…”

Section: Introductionmentioning

confidence: 99%

“…The use of optimization methods is considered a modern design approach. For example, the structural optimization considered by scientists [4] theoretically allows to create in an automatic mode a machine that is optimal in structure. And yet, due to the complexity of formalizing the description of this structure, it turned out that it is practically impossible to use the optimization method in the design of mining machines.…”

Section: Introductionmentioning

confidence: 99%

Development of the concept of recurrent metamodeling to create projects of promising designs of mining machines

et al. 2020

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In the work on the example of a tunnel erector, the concept of recurrent metamodeling is determined which allows engineering new designs of mining machines. In this case, the metamodel of their entire family is associated with the family of models of machine nodes. The effect of various laws of movement of the erector devices is analyzed and it is proved that its minimum time is observed under conditions of compliance with the U-shaped law. A mathematical model of the hydraulic drive of the erector devices has been developed, which allows, taking into account any options for moving the point mass, to determine the law of control of the movement of the spool of the hydraulic directional control valve (DCV) in relation to the laminar and turbulent type of liquid flow. The erector device metamodel was created using the algorithmic language MATLAB Simulink.

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“…Dnipro University of Technology has in its use a license to work with SOLIDWORKS Education Edition software pack age, which includes software applications for performing cal culations of dynamic [16] and static [17,18] loads that occur in machine elements.…”

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confidence: 99%

Assessing the accuracy of modeling the tubbing erector manipulator mechanism in solidworks motion program

Panchenko¹

2023

Nauk. visn. nat. hirn. univ.

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Purpose. To estimate the calculation error in determining the kinematic and dynamic characteristics of the UT62 tubbing erector manipulator mechanism movement. Methodology. Modern computer analysis methods are used, which are implemented in a number of computing complexes. Due to the task complexity, a mathematical model for the manipulator mechanism fragment, which is a hydraulic cylinder with two degrees of freedom, has been developed to estimate the error of computer modeling. This model is used as a test model. Findings. On the example of the model study, it is shown that when simulating the mechanism movement, errors in the calculations are possible due to incorrect problem formulation, as well as to the inaccurate settings of the modules for converting the initial data. Under these circumstances, it has been concluded that when the input link movement is specified as a vector, then when determining the kinematic and dynamic characteristics of the mechanism, it is necessary to use a cubic spline in the “interpolator” module. Originality. For the first time, the direct problem of the manipulator mechanism dynamics has been solved, which consists in determining the static and dynamic characteristics of the device according to the given motion law of its drives. It is noted that when the motion is specified in the form of smooth analytical functions, then there is a complete coincidence of the calculation results performed by the SOLIDWORKS MOTION program with those obtained by mathematical modeling. In addition, when the mechanism link input movement is modeled as a vector, which is formed from a discontinuous function, then the cubic spline used in the “interpolator” module provides smooth harmonic functions of the movement, acceleration and jerk processes. As a result of modeling the manipulator mechanism parameters, it turned out that it is not expedient to use more than 50 points of discrete time in the research. Thus, the errors in calculating the maximum power values of the manipulator motors do not exceed 20 % for the power hydraulic cylinder and 5 % for the hydraulic motor. Practical value. The proposed algorithm can be used to model the movement of complex mechanisms in machines.

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Development of methods for optimizing the parameters of the body of a fixed jaw crusher

Cited by 3 publications

References 3 publications

A methodological approach to assessing the durability of welded structures of screens using SolidWorks Simulation software

A methodological approach to assessing the durability of welded structures of screens using SolidWorks Simulation software

Development of the concept of recurrent metamodeling to create projects of promising designs of mining machines

Assessing the accuracy of modeling the tubbing erector manipulator mechanism in solidworks motion program

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