scholarly journals Mathematical modelling of the interrelated electric and mechanical systems of continuous sub-group of the rolling mill stands. Part 2. Study of dynamic loads in the universal mill stands

2015 ◽  
Vol 15 (2) ◽  
pp. 67-76 ◽  
Keyword(s):  
Mathematical Modelling ◽  
Rolling Mill ◽  
Mechanical Systems ◽  
Dynamic Loads ◽  
Universal Mill

Reducing dynamic loads in the mechatronic system of a rolling mill

2020 ◽  
pp. 45-48
Author(s):  
S.I. Malafeev ◽  
A.A. Malafeeva ◽  
V.I. Konyashin
Keyword(s):  
Direct Current ◽  
Electric Drive ◽  
Rolling Mill ◽  
Correction Method ◽  
System Model ◽  
Dynamic Loads ◽  
Dynamic Processes ◽  
Mechatronic System

A correction method for regulating the mechatronic system of a «DUO-300» rolling mill with a direct current electric drive is considered. The results of the study of dynamic processes in the mechatronic system with the proposed correction are presented. Keywords rolling mill, mechatronic system, model, electric drive, engine, regulator, correction. [email protected]

scholarly journals Mobility Method Applied to Calculate the Lubrication Properties of Bearing under Dynamic Loads

2013 ◽  
Vol 2013 ◽  
pp. 1-5 ◽  
Author(s):  
Tao He ◽  
Xiqun Lu ◽  
Jingzhi Zhu
Keyword(s):  
Dynamic Analysis ◽  
Mechanical Systems ◽  
Journal Bearings ◽  
Numerical Results ◽  
Dynamic Loads ◽  
Analysis Program ◽  
Computational Program ◽  
Dynamically Loaded ◽  
Mobility Method ◽  
Lubrication Properties

The analytical mobility method for dynamically loaded journal bearings was presented, with the intent to include it in a general computational program, such as the dynamic analysis program, that has been developed for the dynamic analysis of general mechanical systems. An illustrative example and numerical results were presented, with the efficiency of the method being discussed in the process of their presentation.

Determination of dynamic loads in the main drive of the rolling mill at rolling strips with finned

2017 ◽  
pp. 49-55
Author(s):  
I. I. Nekrasov ◽  
◽  
A. A. Fedulov ◽  
V. S. Parshin ◽  
S. A. Neiman ◽  
...  
Keyword(s):  
Rolling Mill ◽  
Dynamic Loads

scholarly journals Mathematical modelling of operational stability of sowing machines’ mechanical systems

2018 ◽  
Vol 4 (1 (94)) ◽  
pp. 37-46
Author(s):  
Olena Mogilnay ◽  
Vladimir Paschenko ◽  
Sergei Kharchenko ◽  
Vladimir Domashenko ◽  
Kostiantyn Siedykh
Keyword(s):  
Mathematical Modelling ◽  
Mechanical Systems ◽  
Operational Stability

Correction of Rolling Mill Mechatronic System to Limit Dynamic Loads

2018 ◽  
Vol 38 (6) ◽  
pp. 431-433 ◽  
Author(s):  
S. I. Malafeev ◽  
A. A. Malafeeva ◽  
V. I. Konyashin
Keyword(s):  
Rolling Mill ◽  
Dynamic Loads ◽  
Mechatronic System

Modelling and simulation of complex mechanical systems with applications to a steam-generating system Part 1. Mathematical modelling

1994 ◽  
Vol 25 (12) ◽  
pp. 2393-2402 ◽  
Author(s):  
STANISLAW TARASIEWICZ ◽  
JEAN-CHARLES GILLE ◽  
FRANÇOIS LÉGER ◽  
PIERRE VIDAL
Keyword(s):  
Mathematical Modelling ◽  
Mechanical Systems ◽  
Modelling And Simulation ◽  
System Part ◽  
Complex Mechanical Systems ◽  
Generating System

scholarly journals Determination of vertical dynamics for a standard Ukrainian boxcar with Y25 bogies

2020 ◽  
pp. 67-72
Author(s):  
O. V Fomin ◽  
A. O Lovska
Keyword(s):  
Mathematical Modelling ◽  
Dynamic Characteristics ◽  
Center Of Mass ◽  
Vertical Plane ◽  
Field Tests ◽  
The Body ◽  
Dynamic Loads ◽  
Theoretical Research ◽  
Predominant Type ◽  
Mathcad Software

Purpose. To determine the basic dynamic characteristics of a standard Ukrainian boxcar with the Y25 bogie by means of the mathematic modelling of dynamic loads in the vertical plane and to compare them with the dynamic characteristics obtained for a boxcar with the 18100 bogie. It can be used for substantiation of application of the Y25 bogie as more promising, which can improve the operational efficiency of rail transportation and foster integration of the Ukrainian transport system into the European transportation complex. Methodology. The authors used the mathematical modelling of a boxcar with the Y25 bogie. The research was made in the vertical plane. It was taken into account that an empty car passed over a joint irregularity. The research was made for an 11217boxcar as a predominant type to be used. The authors studied the motion of a car on the 18100 and Y25 bogies. The basic dynamic characteristics were determined for a boxcar with the nominal (design) dimensions of the carrying elements and a boxcar with the actual dimensions (after a long service life) on the basis of the field tests. The differential equations were solved by theRungeKutta method in MathCad software suite. The initial displacements and the speeds were taken equal to zero. The following dynamic characteristics of a boxcar were obtained: acceleration of the body in the center of mass, acceleration of the body in the areas of support on the bogies, forces in the spring suspension of the bogie, and dynamic coefficients of the bogies. Findings. The theoretical research showed that the basic dynamic characteristics of a boxcar with the nominal dimensions were improved by 3851% in comparison to a similar one with the 18100 bogie, and for a boxcar with the actual dimensions the dynamic characteristics were improved by 4350%. Originality. The authors substantiated the application of the Y25 bogie for a standard Ukrainian boxcar with the nominal and actual dimensions of the carrying elements by means of the mathematical modelling of the dynamic loads in the vertical plane. Practical value. Due to lower dynamic loads on the carrying structures of freight cars with the Y25 bogie, it is possible to improve the dynamic characteristics of the structures under the operational modes, to increase the fatigue strength and the operational resource, to decrease the total repair and maintenance costs, to ensure better security and reliability of freight transportation through lower loads on both carrying structures and lashing devices, to increase the speed of freight delivery thanks to better dynamic characteristics of cars, to improve the traffic security, and so on.

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