Mathematical Model of a Combined Soil Launcher-Strip Paver

DRAPALYUK, M.V.; Бартенев, Иван; Gnusov, Maksim; Druchinin, Denis; Knyazev, Andrew

doi:10.18324/2077-5415-2020-4-97-106

Cited by 3 publications

(1 citation statement)

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“…The degree of development of the problem. The theoretical and scientific basis of the essence of assessing the level of competitiveness is reflected in the scientific works of: Bykov V.A., Gerchikova N.I., Gorbashko E.A., Korobov Yu.I., Manevich V.A., Safiullina L.N., I. Ansoff, P. Doyle, P. Drucker, etc [1].…”

Section: Introductionmentioning

confidence: 99%

An approach to assessing the level of competitiveness of a timber industry innovative enterprise based on the methodology of economic and mathematical modelling

Shanin

2023

E3S Web of Conf.

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The article proposes an approach to assess the level of competitiveness of timber industry enterprises, as an example, furniture enterprises that carry out innovative activities and produce innovative products are considered. The principles of economic and mathematical modelling form the basis for the assessment of the improved methodology. In the improved methodology, a group of weighting coefficients is proposed that make it possible to most accurately determine the level of competitiveness of an innovative enterprise according to the proposed economic and mathematical model, but taking into account the implementation of all stages in the algorithm developed by the author to increase the level of competitiveness of an innovative forestry enterprise. The general integral indicator of the level of competitiveness of the analysed enterprise is calculated. Based on the formed economic and mathematical model, an assessment of the level of competitiveness of an innovative furniture enterprise was carried out. It was determined that in the analysed enterprise it is necessary to pay attention to the factors of competitive and strategic positioning (0.61 in 2020) and trade and production efficiency (0.82 for the reporting period), the values of the coefficients of which are at the minimum level.

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Section: Introductionmentioning

confidence: 99%

An approach to assessing the level of competitiveness of a timber industry innovative enterprise based on the methodology of economic and mathematical modelling

Shanin

2023

E3S Web of Conf.

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Composition for Anticorrosive Treatment of Parts of Threaded Connections

Shemyakin

Fadeev

Uspensky

et al. 2023

Engineering Technologies and Systems

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Introduction. A review of studies on the protection of threaded connections from corrosion shows that they have leaks that contribute to the development of crevice corrosion, which leads to a decrease in the mechanical strength of threaded connections and complicates dismantling. Modern lubricants and chemical thread fixatives do not provide corrosion protection and disassembly of threaded connections over a long service life, so the development of a more effective lubricant composition is an urgent task. Aim of the Article. Is to develop an effective lubricant composition to protect against corrosion and improve the disassembly of threaded connections. Materials and Methods. The parts of the M10 threaded pair with a thread pitch of 1.5 mm made of St3 steel, connecting two products, (prototypes) were lubricated with grease Zh-SKa 2/6-2, lithol-24, grease + oligomer D-10TM 5% by weight, composition of litol-24 + oligomer D-10TM 5% by weight, tightened to the moment of tightening force 80 N‧m, immersed in a 3% hydrochloric acid solution at a temperature of 22‒24°С. After 8 hours, the samples were removed from the solution and left in the air for 16 hours, which represented one cycle. According to the lubrication options, the number of parallel experiments was 5. Exposure duration – 24; 48; 96; 240; 480; 720 hours, after the expiration of which 5 samples of each lubricant option were disassembled, the value of the moment of the release force was recorded, the corrosion damage was assessed, and the coefficient of friction was calculated. Results An effective lubricant composition has been developed for processing parts of threaded connections, which increases their corrosion resistance and improves dismantling. Discussion and Conclusion. When adding oligomer D-10TM 5% by weight in litol-24, there is a significant increase in the length of time before the appearance of foci of corrosion on the details of threaded connections and an improvement in their dismantling. Implementation of the obtained results allows to increase the reliability of threaded connections.

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Quality Control of Gas-Thermal Coatings of Variable Composition

Kadyrmetov

Simonova

Snyatkov

et al. 2022

KEM

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The article proposes an approach to control the uniformity of wear of friction surfaces under conditions of non-uniform wear on the surface. The core of the approach is the regulation of the composition of the sprayed coating material with the addition of a strengthening additive, depending on the intensity of the wear effects. To improve the quality of the coating, a combined process of spraying the coating with its subsequent plasma reflow, as well as processing to remove residual stresses in the coating and final plasma strengthening is proposed.

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Mathematical Model of a Combined Soil Launcher-Strip Paver

Cited by 3 publications

References 0 publications

An approach to assessing the level of competitiveness of a timber industry innovative enterprise based on the methodology of economic and mathematical modelling

An approach to assessing the level of competitiveness of a timber industry innovative enterprise based on the methodology of economic and mathematical modelling

Composition for Anticorrosive Treatment of Parts of Threaded Connections

Quality Control of Gas-Thermal Coatings of Variable Composition

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