Scientific Journal of KubSAU

Polythematic online scientific journal
of Kuban State Agrarian University
ISSN 1990-4665
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Name

Duryagina Veronika Vladimirovna

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Academic rank

Honorary rank

Organization, job position

South Federal University
   

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Articles count: 4

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304 kb

MATHEMATICAL MODELING OF MTU TENSILE LOAD

abstract 1001406015 issue 100 pp. 289 – 302 30.06.2014 ru 864
The article is devoted to mathematical modeling of random process that occurred in tensile load of serial and experienced MTU. The efficiency of EDM application in transmission is discussed
305 kb

MATHEMATICAL MODELING OF MTU TENSILE LOAD

abstract 1011407024 issue 101 pp. 424 – 437 30.09.2014 ru 680
The article is devoted to mathematical modeling of random process that occurred in tensile load of serial and experienced MTU. The efficiency of EDM application in transmission is discussed
229 kb

SOLUTION OF THE OPTIMIZATION PROBLEM FOR ELASTIC-DAMPING MECHANISM PARAMETERS IN PLOWING MODE

abstract 1311707077 issue 131 pp. 935 – 943 29.09.2017 ru 81
The article is devoted to finding of the optimum parameters for elastically damping mechanism (EDM) which is located in transmission of machine-tractor unit (MTU). The investigated MTU is based on the tractor of 1.4 class in plowing mode. EDM is designed for MTU in order to make its’ start smoothly, to reduce the dynamic load in transmission, to protect engine from the external load vibration. The “transmittance level” (index T) is used as evaluation of the protective mechanism quality. The study was carried out by means of the experiment planning method, viz. the central composition plan of second order with five factors. A regression model for response function (“transmittance level”) is given. This model takes into account the chosen EDM characteristics. The statistical analysis methods (Student’s t-test, Fisher’s test) were used to study the regression model. The dependence of response function on each factor apart, their cross impact on the process are described. The system of partial differential equations is obtained to find the optimal values of parameters and response function. The optimal value of a “transmittance level” can be obtained by varying different EDM parameter values. Optimal values of parameters and as result - response function - allow improving of MTU functioning in plowing mode
1090 kb

THE EXPERIMENTAL RESEARCH RESULTS OF WORKING INDICATORS FOR MTU ON THE BASIS OF THE 1,4 CLASS WITH ELASTIC DAMPING MECHANISM IN TRANSMISSION

abstract 1121508043 issue 112 pp. 591 – 603 30.10.2015 ru 646
The article deals with the study of the influence of the elastic damping mechanism (EDM) on the operability index for arable MTU on the basis of the 1,4 class tractor. The elastic damping mechanism was designed in order to smooth the aggregate starting, to reduce the dynamic load in transmission, to protect the engine from the external load vibration. The experimental results that were obtained while full-scale field studies of serial and test (containing EDM in transmission) machines are given in the article. Various oscillograms are analyzed: torque on the axis of tractor's driving wheel, tractive effort, the speed of the driving wheel, angular velocity of engine shaft and haulage. The mass-spectrum analysis was carried out to study the tractor characteristics in time more thoroughly. Such analysis allows to evaluate qualitatively the EDM influence. The normalized autocorrelation function and spectrum density of variation in time are studied in details for the following MTU characteristics: the wheel torque, haulage and tractive effort. These characteristics were compared with analogous characteristics for serial MTU model. The obtained results confirm that the EDM use in the tractor transmission has a positive effect on the functional MTU indexes. Obtained data can be used in mathematical modeling of MTU functioning
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