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

Zabolotnyi, Kostiantyn; Жупієв, Олександр Леонідович; Panchenko, Olena; Tipikin, A. P.

doi:10.1051/e3sconf/202020101019

Cited by 4 publications

(5 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…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.

View full text Add to dashboard Cite

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.

show abstract

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.

View full text Add to dashboard Cite

show abstract

“…На теперішній час в гірничо-металургійній промисловості країни використовується ще велика кількість обладнання, яке було розроблено та виготовлено підприємствами Радянського Союзу в минулому столітті. Можливості конструкторів при розробці обладнання тоді були вкрай обмеженими існуючими технологіями проєктування (Zabolotnyi et al, 2015). Внаслідок чого розрахункова конструкторська документація на таке обладнання застаріла або взагалі відсутня.…”

Section: вступ (Introduction)unclassified

Дослідження Стійкості Штабелеукладача При Різних Умовах Його Роботи

Zaselskyi,

Shved,

Popolov

et al. 2023

ete

View full text Add to dashboard Cite

This article deals with the research related to the reengineering of stackers, which were developed and manufactured at the end of the twentieth century and are still in operation at a number of enterprises of the mining and metallurgical complex of Ukraine. For this study, we chose a modernized stacker type U1 SN-1200, which is still in operation at the iron ore pellets storage area of the pelletizing plant of the Central Mining and Processing Plant of Kryvyi Rih. Its modernization involved the removal of a very bulky, heavy outdated aspiration system, which could significantly affect the rollover stability of its platform and lead to the failure of both its individual components and the stacker as a whole. Therefore, the aim of the research was to conduct studies related to determination of the stacker's margin of safety against overturning depending on its design features that have emerged over the course of its operation and performance for materials whose bulk density does not exceed 1,9 t/m3. To achieve this goal, we used calculation and analytical methods in the MathCAD environment. The main source materials for calculations and research were archival drawings of the stacker and its technical passport. The research found that even with its nine-ton aspiration unit removed, the unit, which is significantly offset from the center of gravity of the entire structure, the safety margin of the stacker to overturning, depending on the capacity, is in the range of 1,6-1,9. Installation of an additional 9 t load instead of the aspiration unit, increases the safety margin of the stacker to 2,2, and without it to 1,8 at maximum stacker productivity of 1200 t/h.

show abstract

“…Literature sources [14,15] present the analysis of technical and technological parameters of existing tubbing erectors: le ver with one and two levers, annular on internal and external supports, cassette, arc with a fixed and swinging arc, arrow shaped. As evidenced by the research results, the proposed designs of tubbing erectors have increased metal consumption and drive power.…”

mentioning

confidence: 99%

“…It should be noted that the development of such a method is complicated, since during operation, a stressstrain state occurs in the parts and nodes of the tubbing erector mechanism, which varies over a wide range [14]. For this reason, the analytical methods proposed in the literature [14,15] do not make it possible to determine the in ternal forces in the manipulator nodes with sufficient accuracy.…”

mentioning

confidence: 99%

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

Panchenko¹

2023

Nauk. visn. nat. hirn. univ.

View full text Add to dashboard Cite

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.

show abstract

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

Cited by 4 publications

References 22 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

Дослідження Стійкості Штабелеукладача При Різних Умовах Його Роботи

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

Contact Info

Product

Resources

About