scholarly journals Studying physical and mechanical characteristics of corn feed

2020 ◽  
Vol 17 ◽  
pp. 00209
Author(s):  
Vyacheslav Ulyanov ◽  
Vladimir Utolin ◽  
Nikolay Luzgin ◽  
Stanislav Krygin ◽  
Marina Parshina
Keyword(s):  
Mechanical Characteristics ◽  
Physical Parameters ◽  
Laboratory Equipment ◽  
Feed Material ◽  
Exchange Processes ◽  
Intensification Of Heat Exchange ◽  
Viscous Media ◽  
Solids Content ◽  
Working Bodies ◽  
Physical And Mechanical Characteristics

The use of condensed extract in the production of corn feed contributes to the improvement of their nutritional and biological value. The rheological properties of the feed material are of great importance in the mechanical interaction with the working bodies of the machines, in the movement of viscous media along technological conveyors, as well as in the intensification of heat exchange processes. The technique, laboratory equipment and the results of studies of physical and mechanical characteristics of corn feed are presented. The viscosity properties of the corn extract are investigated depending on the temperature. It is shown that when decreasing the temperature, the viscosity of the corn extract increases due to the aggregation of its components, which characterizes the non-Newtonian flow of the extract. The coefficient of external friction of the pulp and extract mixture in the technology of preparing corn feed allows calculating the geometry of the storage tanks and energy costs of the processes. The change in the coefficients of friction of corn feed when interacting with various surfaces, depending on the content of dry substances. The specific heat capacity, thermal conductivity and thermal diffusivity of the extract and corn feed were determined and investigated. It has been revealed that the dependences of the thermo-physical parameters of the extract and corn feed on the solids content are non-linear in nature, monotonously decreasing when increasing the concentration of solids.

scholarly journals THE GRINDING MECHANISM ON A KNIFE CENTRIFUGAL GRINDING MACHINE

2020 ◽  
pp. 485-492
Author(s):  
Ivan Andreyevich Voronin ◽  
Yuriy Davidovich Alashkevich ◽  
Viktor Anatol'yevich Kozhukhov
Keyword(s):  
Mechanical Characteristics ◽  
Sliding Friction ◽  
Rolling Friction ◽  
Friction Forces ◽  
Inertial Body ◽  
Grinding Mechanism ◽  
Working Bodies ◽  
Grinding Machine ◽  
Fibrous Suspension ◽  
Physical And Mechanical Characteristics

The article presents a methodology for calculating the force effect on a fibrous suspension of working bodies in a centrifugal grinding apparatus. The aim of the research is to calculate the force per tooth of an inertial body at different speeds of rotation of the rotor, to determine the effect of the circumferential speed of movement of inertial bodies on the grinding process of fibrous semi-finished products. The article discusses the mechanism of grinding on a centrifugal knife grinding apparatus, determines the tangential shear forces at the contact of the grinding satellite knives with the grinding bowl knives, determines the effect on the fiber of rolling friction forces and sliding friction forces when the grinding satellite knives come into contact with the grinding bowl knives, as well as the effect of specific pressure at the point of contact of the satellite knives with the grinding bowl knives under the influence of inertial forces. Based on the research results, it is scientifically substantiated that the forces arising at the minimum of the considered values of the rotation speed of inertial bodies are sufficient to break the fiber when using this installation for grinding fibrous semi-finished products. An increase in the speed of rotation of the satellites causes a positive change in the physical and mechanical characteristics of the finished castings.

Sediment properties and their changes in a sewer

1995 ◽  
Vol 31 (7) ◽  
pp. 77-83 ◽  
Author(s):  
E. Ristenpart
Keyword(s):  
Oxygen Demand ◽  
Temporal Variations ◽  
Extensive Study ◽  
Physical Parameters ◽  
Pollution Characteristics ◽  
Sediment Bed ◽  
Exchange Processes ◽  
Volatile Solids ◽  
Solids Content ◽  
Bed Material

The inhomogeneity of sewer sediment bed material in terms of physical and pollution characteristics is known. To quantify the variations over time and depth of bed deposits an extensive study investigating the properties of bed deposits in a combined interceptor sewer in the city of Hildesheim was carried out. High temporal variations as well as vertical gradients of bed characteristics were found especially for pollution characteristics (chemical and biochemical oxygen demand) and volatile solids content; physical parameters (bulk density, total solids content) appeared to vary less. The fluctuations were related to degradation processes in the sediment bed and exchange processes between bed deposits and sewage.

scholarly journals Thermal transport investigation in AA7072 and AA7075 aluminum alloys nanomaterials based radiative nanofluids by considering the multiple physical flow conditions

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Adnan ◽  
Sheikh Irfan Ullah Khan ◽  
Umar Khan ◽  
Naveed Ahmed ◽  
Syed Tauseef Mohyud-Din ◽  
...  
Keyword(s):  
Aluminum Alloys ◽  
Physical Interpretation ◽  
Thermal Transport ◽  
Mechanical Characteristics ◽  
Flow Regimes ◽  
Physical Parameters ◽  
Flow Conditions ◽  
Flow Parameters ◽  
Shooting Algorithm ◽  
Physical And Mechanical Characteristics

AbstractNow a day’s variety of nanomaterials is available, among these Aluminum Alloys AA7072 and AA705 are significant due to their thermal, physical and mechanical characteristics. These extensively used in manufacturing of spacecraft, aircraft parts and building testing. Keeping in view the significance of nanoliquids, the analysis of methanol suspended by AA7072 and AA7075 alloys under the multiple physical flow conditions is reported. The model is successfully treated by coupling of RK and shooting algorithm and examined the results for the flow regimes by altering the ingrained physical parameters. Then physical interpretation of the results discussed comprehensively. To validate the analysis, a comparison between the presented and existing is reported under certain assumptions on the flow parameters. It is found that the results are reliable inline with existing once.

scholarly journals Study of the dynamics of the coefficient of external friction of seeds crops with shell

2021 ◽  
Vol 273 ◽  
pp. 01032
Author(s):  
Igor Khozyaev ◽  
Dmitriy Savenkov ◽  
Oleg Kirischiev ◽  
Ylia Kirischieva ◽  
Tatiana Tupolskikh
Keyword(s):  
Mechanical Characteristics ◽  
Agricultural Products ◽  
External Friction ◽  
Bulk Materials ◽  
Laboratory Unit ◽  
Nonlinear Character ◽  
Grain Products ◽  
Working Bodies ◽  
Physical And Mechanical Characteristics

The article is devoted to the study of the coefficients of external friction of grain agricultural products-friction in static and dynamic modes, as the most important physical and mechanical characteristics of bulk materials. The description of carousel laboratory unit, program, methodology and results of studies on the practical determination of the coefficients of external friction for typical agricultural grain products according to the materials typical of the working bodies of the production machines. As a result of the research, it was found that in the range of linear velocities from 0 to 1.75 m/s, there is a change in the friction coefficients, which has a nonlinear character.

scholarly journals Thermal Transport Investigation in AA7072 and AA7075 Aluminum Alloys Nanomaterials Based Radiative Nanofluids by Considering The Multiple Physical Flow Conditions

2020 ◽  
Author(s):  
Adnan Abbasi ◽  
Umar Khan ◽  
Naveed Ahmed ◽  
Syed Tauseef Mohyud-Din
Keyword(s):  
Aluminum Alloys ◽  
Physical Interpretation ◽  
Mechanical Characteristics ◽  
Scientific Literature ◽  
Flow Regimes ◽  
Recent Time ◽  
Physical Parameters ◽  
Flow Conditions ◽  
Shooting Algorithm ◽  
Physical And Mechanical Characteristics

Abstract In recent time, variety of nanomaterials have been reported in scientific literature, among these Aluminum Alloys AA7072 and AA705 are significant with thermal, physical and mechanical characteristics. These extensively used in manufacturing of spacecraft, aircraft parts and building testing. Keeping in view the significance of nanoliquids, the analysis of methanol suspended by AA7072 and AA7075 alloys under the multiple physical flow conditions is reported. The model is successfully treated by coupling of RK and shooting algorithm and examined the results for the flow regimes by altering ingrained physical parameters. Then physical interpretation of the results discussed comprehensively.

scholarly journals Dynamic friction coefficients of grain crops of bulk agricultural products

2020 ◽  
Vol 175 ◽  
pp. 01001
Author(s):  
Dmitriy Savenkov ◽  
Oleg Kirischiev ◽  
Valentina Serdyuk ◽  
Aleksey Shcherbakov ◽  
Dmitriy Kirillov
Keyword(s):  
Mechanical Characteristics ◽  
Agricultural Products ◽  
External Friction ◽  
Bulk Materials ◽  
Friction Coefficients ◽  
Type Device ◽  
Nonlinear Character ◽  
Grain Products ◽  
Working Bodies ◽  
Physical And Mechanical Characteristics

The article covers issues related to the study of physical and mechanical characteristics of bulk materials, namely the coefficients of external friction in static and dynamic modes. The program, methodology and results of research on the practical study of external friction coefficients of typical agricultural grain products by the surfaces made of materials typical for the working bodies of production machines, using an innovative carousel-type device, are presented. As a result of research, it was found that in the range of linear speeds from 0 to 1.75 m/s, there is a change in the friction coefficients, which has a nonlinear character.

The Influence of Physical Parameters on the Mechanical Characteristics of Some Volcanic Magmatic Rocks of the Andesite Type

Mining Revue ◽  
2021 ◽  
Vol 27 (2) ◽  
pp. 30-41
Author(s):  
Ciprian Danciu ◽  
Diana Marchiș ◽  
Simona Cucăilă
Keyword(s):  
Mechanical Characteristics ◽  
Strength Characteristics ◽  
Physical Parameters ◽  
Internal Factors ◽  
Hard Rocks ◽  
Magmatic Rocks ◽  
Mineral Components ◽  
Chemical Factors ◽  
Physical And Chemical ◽  
Physical And Mechanical Characteristics

Abstract The factors that influence the strength characteristics of rocks can be different in nature, being divided into external and internal factors. The mechanical properties of hard rocks are a result of geological, physical and chemical factors. In order to highlight the physical parameters that influence the strength characteristics of the rocks, in this paper there were analyzed six types of volcanic magmatic rocks such as andesites. In terms of stress behavior, rocks are directly influenced by their physical properties, such as volumetric density, porosity, compactness, moisture and the degree of alteration of mineral components. For this purpose, several sets of tests were performed to determine the physical and mechanical characteristics of the rocks, based on which it was possible to analyze how the physical parameters influence the strength characteristics.

BENCH DESIGN AND STUDY OF PHYSICAL AND MECHANICAL CHARACTERISTICS OF A TEAT CUP LINER WITH ANTIBACTERIAL FILLER

2020 ◽  
pp. 22-26
Author(s):  
YURY G. IVANOV ◽  
◽  
YELENA V. MASHOSHINA ◽  
LYUDMILA N. VERLIKOVA ◽  
DARIA G. GELETIY ◽  
...  
Keyword(s):  
Mechanical Characteristics ◽  
Physical And Mechanical Characteristics

Discharge-pulse Geotechnical Electro Discharge Technology of Bases Strengthening

2020 ◽  
Vol 787 (12) ◽  
pp. 63-65
Author(s):  
N.S. Sokolov
Keyword(s):  
Bearing Capacity ◽  
Mechanical Characteristics ◽  
Discharge Pulse ◽  
Zero Values ◽  
Traditional Technologies ◽  
Negative Friction ◽  
Geotechnical Problems ◽  
Physical And Mechanical Characteristics

The problem of increasing the bearing capacity of the base is an relevant problem in modern geotechnical construction. When significant loads are transmitted to the base, the use of traditional technologies is not always justified. Often there is an urgent need to use non-standard ways to strengthen the bases. In many cases, the geotechnical situation is aggravated by the presence of weak underlying layers with unstable physical and mechanical characteristics in engineering-geological sections. When strengthening such bases with the help of traditional piles, the latter can get negative friction, which significantly reduces their bearing capacity on the ground, sometimes reaching zero values. This may lead to additional precipitations of the objects being constructed and constructed in the zone of geotechnical influence. The use of ERT piles in most cases successfully solves many complex geotechnical problems.

Sign in / Sign up

Export Citation Format

Share Document