scholarly journals RESULTS OF MULTIVARIATE EXPERIMENT TO DETERMINE DEPENDENCE OF THE MAXIMUM PRESSURE OF TRACTOR WHEELS ON THE SOIL FROM TRACTOR’S PARAMETERS AND PHYSICAL AND MECHANICAL PROPERTIES OF SOIL. ANALYSIS OF THE EQUATIONS

2017 ◽  
pp. 99-103
Author(s):  
Хафизов ◽  
Kamil Khafizov ◽  
Хафизов ◽  
Ramil Khafizov
Keyword(s):  
Mechanical Properties ◽  
Soil Analysis ◽  
Statistical Processing ◽  
Physical And Mechanical Properties ◽  
Maximum Pressure ◽  
Soil Hardness ◽  
Wheel Profile ◽  
Main Factors ◽  
Experimental Values ◽  
Properties Of Soil

During statistical processing of proceeding of several variants of experiments the equation of maximum pressure of tractor wheels on the soil were obtained, depending on the tractor parameters and physical and mechanical properties of the soil. This paper analyzes the influence of the main factors on the maximum amount of wheels pressure on the ground. We revealed performance of equations beyond the experimental values of the factors. With an increase in the width of the wheel profile, its diameter, the speed of the tractor, the maximum pressure of wheel on the ground is reduced, and with increasing tractor’s weight on one wheel, the soil hardness, the pressure in wheel tire the maximum pressure of wheel on ground increases. Comparison with the data, available in the domestic and foreign journals, showed that the most stable prediction results of maximum pressure value of tractor wheels on the ground are obtained by using the first equation in the article. The prediction error of wheels maximum pressure values is in the range of 3 to 15%, depending on the brand of tractor and its working conditions.

scholarly journals RESULTS OF MULTIVARIATE EXPERIMENT TO DETERMINE DEPENDENCE OF THE MAXIMUM PRESSURE OF TRACTOR WHEELS ON THE SOIL FROM TRACTOR’S PARAMETERS AND PHYSICAL AND MECHANICAL PROPERTIES OF SOIL. STATISTICAL ANALYSIS

2017 ◽  
pp. 94-98
Author(s):  
Хафизов ◽  
Kamil Khafizov ◽  
Хафизов ◽  
Ramil Khafizov
Keyword(s):  
Mechanical Properties ◽  
Similarity Theory ◽  
Experimental Studies ◽  
Similarity Criterion ◽  
Statistical Processing ◽  
Physical And Mechanical Properties ◽  
Multiple Correlation Coefficient ◽  
Similarity Criteria ◽  
Maximum Pressure ◽  
Regression Equations

A similarity criteria were reveled to determine the dependence of maximum pressure of the tractor wheel on the soil on the basis of the use of similarity theory. Each similarity criterion includes several parameters, characterizing the tractor, its propeller and physical and mechanical properties of the soil. The similarity criteria is taken as factors in the multivariate experiment. Multifactorial experimental studies were planned and carried out. We used Statistics Toolbox subsystem of Matlab computer mathematics system for processing the results of experiments. As a result of statistical processing of the experimental data by the equation we obtained a dependence of maximum pressure of the tractor wheel on the soil from tractor parameters, and physical and mechanical properties of the soil. Statistical data on the equations, such as - multiple correlation coefficient, Fisher’s criterion, Student’s criterion, indicate the significance of equations of the experiments variants, as well as the significance of the coefficients of the regression equations.

scholarly journals The Permeability of Granite Weathering Soil in Tanjungpinang, Bintan Island, Indonesia

2020 ◽  
Vol 5 (3) ◽  
pp. 145-152
Author(s):  
Fery Erawan ◽  
Emi Sukiyah ◽  
Johanes Hutabarat ◽  
Adjat Sudradjat
Keyword(s):  
Mechanical Properties ◽  
Clay Mineral ◽  
Soil Analysis ◽  
Soil Layer ◽  
Physical And Mechanical Properties ◽  
Undisturbed Soil ◽  
Dominant Type ◽  
Flat Terrain ◽  
The Impact ◽  
Properties Of Soil

Bintan Island is a part of Riau Islands Province. On this island, the capital city is Tanjungpinang. The compliance of public facilities such as landfill waste is a priority in this city. Landfill design that suitable in this area is a sanitary landfill system. The soil layer uses to cover the waste in this landfill system. The closure did gradually avoid the disruption of waste processing. The type of soil for its landfill cover has to be able to control the leachate. It controlled by the permeability of the soil. The methods used in this study are the analysis of the physical and mechanical properties of soil. Rock and soil samples are obtained systematically through trenching. Sampling-based on changes in physical properties of soil that reflect its mechanical properties. A probabilistic approach used to solve the problems and to get accurate results. The geomorphology of the study area divided into four units. They are very flat terrain, flat terrain, slightly steep hills, and steep hills. The sample used for the study is undisturbed soil. Analysis of the physical and mechanical properties of soil shows the types of soil, such as SW, GM, MH-OH, and CH. However, MH is the most dominant type of soil. Each of the soil types represents a certain degree of weathering. The degree of weathering in the study area varies from the III degree to VI degrees. Rocks are weathering form clay mineral, which compiles the soil. Clay mineral in the soil layer is varied from quartz, illite, kaolinite, gibbsite, goethite, and hematite—the impact of the swelling of clay. The swelling of clay in the study area ranged from low to high. The properties and composition of the soil are affected by the permeability value.

scholarly journals ДОСЛІДЖЕННЯ ВПЛИВУ ЛАЗЕРНОГО ГРАВІРУВАННЯ НА ФІЗИКО-МЕХАНІЧНІ ВЛАСТИВОСТІ НАТУРАЛЬНИХ ШКІР ДЛЯ ВЕРХУ ВЗУТТЯ ТА ШКІРГАЛАНТЕРЕЙНИХ ВИРОБІВ

2021 ◽  
Vol 150 (5) ◽  
pp. 46-55
Author(s):  
Н. М. Борщевська
Keyword(s):  
Mechanical Properties ◽  
Focal Length ◽  
Statistical Processing ◽  
Physical And Mechanical Properties ◽  
Mechanical Analysis ◽  
Beam Power ◽  
Polished Surface ◽  
Laser Engraving ◽  
Experimental Values ◽  
High Degree

Research of the influence of laser engraving on the physical and mechanical properties of natural leathers for shoe upper of footwear and leather goods, namely leather crust, Flotar and Nappa. Methodology. The methods of physical and mechanical analysis of leather, mathematical planning (multivariate experiment) and statistical processing of experimental values were used for the study problems. Findings. According to the research influence of laser engraving on the physical and mechanical properties of natural leather for shoe upper and leather goods, it was found that the depth and area of laser ablation affect the tensile strength indicators. There is a certain relationship between them. Based on the results experiment, it can be stated that an increase in the depth of ablation to 50-52% of the thickness of the leather negatively affects the physical and mechanical properties, can worsen the operational and consumer characteristics of footwear and leather goods. An increase in the area of engraved elements up to 50% of the total  area  of  a  product  part  is  not  recommended  for  use  on  shoe  parts.  The  recommended  power  for engraving  natural  leather  for  shoe  upper  and  leather  goods  is  60-80%  of  the  machine's  power.  For engraving leather with a polished surface, the laser beam power is adjustable from 11 to 40 W at a head speed  of  270  to  300  mm/s.  For  laser  engraving  decorative  elements  with  a  high  degree  of  detail,  it  is recommended to use a 1.5'' lens, where the spacing between it and the surface will be 3.81 cm. Increasing the focal length is advisable when engraving captions and images with low detail requirements. Originality. The regularities of the influence of the depth and area of decorative elements during laser engraving on the physical and mechanical properties of natural leather for shoe upper of footwear and leather goods have been determined. Practical value. The optimal parameters of laser engraving for finishing shoes and leather goods made of natural leather have been determined.

Water saving technology of cotton sowing

2019 ◽  
Vol 1 (4) ◽  
pp. 16-22
Author(s):  
Ongarbay P. Auezov ◽  
Bazarbay K. Utepbergenov ◽  
Bakhitbay N. Ramazanov
Keyword(s):  
Mechanical Properties ◽  
Water Scarcity ◽  
Physical And Mechanical Properties ◽  
Water Saving ◽  
Plastic Film ◽  
Properties Of Soil

This article presents the results of a technology of placing a plastic film in the space between cotton rows. We have studied physical and mechanical properties of soil before placing the film. We have proved that the plastic film in the spaces between the cotton rows retains moisture in the soil much longer and it is possible to obtain up to 22 kg/ha of raw cotton in the condition of water scarcity in the Karakalpakstan.

scholarly journals Pressure in the hydraulic system of three point hitch of tractor equiped with electrical and mechanical control

2012 ◽  
Vol 49 (No. 2) ◽  
pp. 37-43 ◽  
Author(s):  
I. Petranský ◽  
Š. Drabant ◽  
J. Ďuďák ◽  
A. Žikla ◽  
I. Grman ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Hydraulic System ◽  
Safety Valve ◽  
Physical And Mechanical Properties ◽  
Point Of View ◽  
Hydraulic Circuit ◽  
Testing Conditions ◽  
Operation Parameters ◽  
Properties Of Soil ◽  
Ploughing Depth

The goal of the measurement of the tractor ZTS 164 45 equipped with digital electrohydraulical control EHR-D BOSCH during ploughing with ploughs KUHN (4 bottoms) and 5 PHX 35 (5 bottoms) was to obtain time dependent states of pressure in the hydraulic system of the three point hitch of tractor. From the point of view of comparison of obtained results testing conditions were determinated with respect to physical and mechanical properties of soil such as soil volume mass, soil humidity, penetration resistance and shear resistance of soil. Beyond these measurements also measurements of operation parameters as a&nbsp;ploughing depth, ploughing width, working speed and fuel consumption were accomplished. The measured results of physical and mechanical properties of soil show big content of loam elements and stones in the soil. Simultaneously the measured results of the operation parameters of the ploughing sets confirmed that the ploughs KUHN and 5 PHX 35 are suitable for tractor ZTS 164 45. Based on the measured results there is a possibility to infer following conclusions: Control system of the three point hitch offers a reliable function. Hydraulic circuit is equipped by an improper distributor which causes pressure peaks which are corres-<br />ponding with safety valve adjustment. Hydraulic circuit has a&nbsp;low conductive resistance. Loading of tractor body is higher when using mounted plough than with semi mounted plough.

scholarly journals In site geotechnical investigations in the city of Larissa and influence on the construction environment

2021 ◽  
Vol 899 (1) ◽  
pp. 012034
Author(s):  
F Kokotini ◽  
N Alamanis ◽  
G Papageorgiou ◽  
E Paschalis ◽  
T Chrysanidis
Keyword(s):  
Mechanical Properties ◽  
Physical And Mechanical Properties ◽  
Field Testing ◽  
Geotechnical Data ◽  
Geotechnical Investigations ◽  
A Site ◽  
The City ◽  
Construction Works ◽  
Properties Of Soil

Abstract Field testing is often a very reliable way to determine the mechanical properties of soil materials and in some cases the most appropriate and unique way to obtain accurate measurements. Geotechnical engineers and engineering geologists perform geotechnical investigations to obtain information on the physical and mechanical properties of soil and rock underlying (and sometimes adjacent to) a site to design earthworks and foundations for proposed structures. The object of the present work is the recording of the geotechnical data of the center and districts of the city of Larissa, the knowledge of which is necessary for the construction and erection of construction works, as well as the characteristics and points that need special attention in each area. Finally important conclusions refer to the construction culture, that project authorities and contractors should draw on, accordingly.

scholarly journals ЕКСПЛУАТАЦІЙНІ ВЛАСТИВОСТІ ГОТЕЛЬНИХ МАХРОВИХ РУШНИКІВ

2021 ◽  
pp. 43-51
Author(s):  
А. С. Паршин ◽  
С. І. Арабулі ◽  
А. Т. Арабулі
Keyword(s):  
Mechanical Properties ◽  
Materials Science ◽  
Experimental Studies ◽  
Statistical Processing ◽  
Physical And Mechanical Properties ◽  
Basic Principles ◽  
Textile Materials ◽  
Textile Fabrics ◽  
High Level ◽  
Experimental Researches

Assessment of the providing level of hotel facilities by quality terry towels based on a comprehensive study of the operational properties of terry textile fabrics. Methodology. Theoretical and experimental researches are based on the basic principles of textile materials science. During experimental studies, modern methods were used to determine the physical and mechanical properties of textile materials, as well as methods of mathematical planning and statistical processing of the experimental results. Results. The state and norms for the provision of hotel facilities in Ukraine with terry towels are given. The assortment of hotel terry towels has been analyzed. The main factors of the formation of a modern assortment of textile materials for hotel terry towels are considered. The focus is on the classic range of double nap terry fabrics for hotel towels. The analyses of the physical and mechanical properties of modern fabrics for hotel towels are present. Indicators characterizing the interaction of textile with liquid moisture have been experimentally determined. The paper presents the results of determining the wear resistance of fabrics after 1, 5 and 10 cycles "wash-ironing". Scientifi c novelty. The data of the physical and mechanical properties of the classic assortment of textile materials for hotel terry towels are systematized. It has been experimentally proven that the assortment of cotton terry textile materials, which is currently available on the Ukrainian market and is used for the manufacture of hotel terry towels, provides a high level of comfort and durability of towels. Practical value. The modern assortment of textile materials for hotel terry towels is analyzed, taking into account the peculiarities of the operational situation of consumption.

Investigations Of Physical And Mechanical Properties And Fracturing Of The Kyzyl-Alma Deposit

2021 ◽  
Vol 03 (04) ◽  
pp. 25-30
Author(s):  
Kazakov Aziz Nigmanovich ◽  
◽  
Khakberdiyev Muzaffar Rustamovich ◽  
Keyword(s):  
Mechanical Properties ◽  
Rock Pressure ◽  
Physical And Mechanical Properties ◽  
Main Factors ◽  
Main Factor

The article examines the main factors that affect the nature of the manifestation of mountain pressure. The physical and mechanical properties of rocks are the main factor determining the nature of the manifestation of rock pressure, their stability and their tendency to self-collapse.

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