Wyniki wyszukiwania - BazTech

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Investigation of internal efforts in the components of the crop sprayer boom section

Hevko R., Stashkiv M., Lyashuk О., Vovk Y., Oleksyuk V., Tson O., Bortnyk I.

Journal of Achievements in Materials and Manufacturing Engineering

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2021

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Vol. 105, nr 1

33--41

EN

Purpose: Development results allow the defects in the boom section of a crop spraying machine design to be found, the most loaded structural components to be determined and the most suitable design parameters to be chosen. Design/methodology/approach: Results of theoretical investigation of internal forces distribution in the components of a boom section of a crop spraying machine in the static statement of the problem have been presented. The applied under discussion enables the static indeterminacy to be realized whilst calculating the complex frame structures though it requires not only considerable records of the function of potential energy of deformation (even without taking into account the function of potential energy of deformation of normal and lateral forces) but application of applied computer programs. The technique of static indeterminacy realization by minimum of potential energy of deformation (MPED) method has been used to calculate the framework. Findings: Technique of static indeterminacy realization by minimum of potential energy of deformation (MPED) method has been used to calculate the framework. The results of theoretical calculation and simulation of the boom section of a crop spraying machine have been compared. The results of analytical calculation have been checked by the simulation of 3D model of the using the program complex «Lira-SAPR», where the finite elements method (FEM) has been implemented. Research limitations/implications: Horizontal components of the shear forces as well as the normal forces and as a consequence the corresponding potential deformation energy are neglected, which has some effect on the accuracy of the calculations. Practical implications: An effective tool for strength analysis with preliminary assessment and diagnostics structures based on the constructed calculation models of stress strain state load-bearing frames of typical geometry with an arbitrarily given distribution of external load. Originality/value: A universal algorithm records of the function of torque and bending moment, as well as the function of potential deformation energy of a spraying machine boom section.

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The impact of the kinematic parameters of bounce and pitch motions of sprung mass on wheeled vehicles handling

Lyashuk О., Sokil M., Vovk Y., Tson O., Dzyura V.

Zeszyty Naukowe. Transport / Politechnika Śląska

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2017

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z. 97

81--91

EN

The impact of the kinematic parameters of bounce and pitch motions of wheeled vehicles’ (WVs’) sprung mass (SM) with non-linear power characteristics of the cushion system on vehicles handling is studied. The dependence of the critical value of the dynamic steering angle of directive wheels on the amplitude of bounce and pitch motions and the kinematic parameters of motion is developed. It is proven that the limit value of the dynamic steering angle of directive wheels is reduced during acceleration, and vice versa (it increases during braking, while the bounce and pitch motions are significantly reduced).

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Research of the structure and trends in the development of the logistics market in Ukraine

Karpenko O., Horbenko A., Vovk Y., Tson O.

Journal of Sustainable Development of Transport and Logistics

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2017

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Vol. 2, No. 2

57--66

EN

The purpose of the article is to study the structure and capacity of the Ukrainian logistics market. Based on the use of statistical methods, mathematical modeling, forecasting, the main development trends of the market of logistics services in Ukraine are determined. The research results can be used both in scientific sphere and for making investment decisions in the practice of players of the Ukrainian market.

4

Analytical evaluation of technical and operational indicators impact on the transportation technology by automobile trailers

Tson O.

Journal of Sustainable Development of Transport and Logistics

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2016

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Vol. 1, No. 1

23--26

EN

The impact of technological and operational indicators on the efficiency of using operational time during goods transportation by automobile trailers is analytically studied. The failure cause of automobile trailers undercarriages is analysed. The analytical dependences for the preliminary assessment of metal undercarriages performance in the design phases are developed. The proposed mathematical standard vehicle-performance test is compared with the obtained experimental data.