Physical Modeling of the Contact Interaction Between Working Body of Digging Machine and Frozen Soil

Kuznetsova, V. N.; Automobile, Siberian State

doi:10.17223/19988621/61/7

Cited by 4 publications

(4 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Combining all parameters into one analytical dependence is a challenging task. Methods for physical modelling of the working processes of the contact of the active bodies of road-building machines with non-homogeneous and anisotropic media, such as municipal solid waste, were studied in [13,14,15,16,17,18]. All three hypotheses and the generalized V.I.…”

Section: Literature Reviewmentioning

confidence: 99%

Bases of the method of physical modeling of the process of crushing of municipal solid waste

Khankelov,

Irisbekova,

Rustamov

et al. 2024

J Appl Eng Science

View full text Add to dashboard Cite

A large number of studies are aimed at increasing the energy efficiency of grinding processes of various solid materials, while maintaining the values of other important indicators, such as material consumption, productivity, etc. Based on this trend, a new method for physically modeling the process of grinding municipal solid waste (MSW) was proposed for the first time. Existing physical modeling techniques are designed for homogeneous and isotropic materials (for example, soil, crushed stone, snow, coal, etc.). The strength properties of solid waste vary widely due to the significant heterogeneity of their components. Consequently, when crushing solid waste, traditional crusher designs have low efficiency in terms of energy intensity, material intensity and product quality. The purpose of this work is to develop a new technique for physical modeling of the grinding process, based on the main principles of similarity theory and modeling, considering the properties of waste heterogeneity. As a result of the research, a block diagram of the physical modeling methodology for the interaction of the working bodies of impact crushing machines with solid waste was developed. A list of tasks for the modeling process and similarity criteria have been determined based on the development of rheological models of the “working body - municipal solid waste” system and the laws of mechanics that characterize the waste grinding process. Based on the developed similarity criteria, scale equations for the grinding process are substantiated and formulas are derived for determining the expected parameters of the original based on the parameters measured on the model. The developed methodology makes it possible to create a crusher design with improved energy efficiency indicators with the least material and labor costs.

show abstract

Section: Literature Reviewmentioning

confidence: 99%

Bases of the method of physical modeling of the process of crushing of municipal solid waste

Khankelov,

Irisbekova,

Rustamov

et al. 2024

J Appl Eng Science

View full text Add to dashboard Cite

show abstract

“…This means that with an increase in the transverse profile of the tooth and the area of the worn surface, the friction forces acting on it increase [17,[25][26][27]. Accordingly, the energy intensity of the tooth insertion process and the destruction of the soil will increase with increasing friction forces of the worn part.…”

Section: Study Of the Effectiveness Of The Ripper Tooth Inserting When Cutting Soilmentioning

confidence: 99%

“…It is obvious that the solution according to Restriction II is unacceptable since, in this case, the specified operating device will not be sufficiently firm. Applying inequalities (26) to the range of variation x (−1;1) under study, the following condition is formed: y(x) > l (34) in the solution, the segment under study will look like:…”

Section: Restrictions II the Width Of The Cutting Edge Shall Be Limited By The Values Of The Profile The Width Of Which Cannot Have Negatmentioning

confidence: 99%

Study of the Spatial Distribution of Forces and Stresses on Wear Surfaces at Optimization of the Excavating Part of an Earthmoving Machine Transverse Profile

et al. 2021

View full text Add to dashboard Cite

The relevance of this research lies in the need to develop a scientifically-grounded methodology for designing the optimal profile of the contact frontal surface of an energy-efficient earthmoving machine operating device, which ensures the redistribution of resistance forces along the cutting elements during the excavation of frozen soil when extracting hydrocarbons. The relevance is confirmed by the need to improve domestic methods for designing the profiles of effective operating devices, ensuring the excavation of frozen soils during the laying of oil and gas pipelines and geological exploration in permafrost areas. Increasing the energy efficiency and service life of highly loaded ripper teeth is done by optimizing the geometric profile and designing a spatial shape that provides minimal resistance to cutting the soil. The object of the research is the process of dynamic interaction of the ripper tooth cutting profile with the frozen soil environment. The research method used was kinematic analysis and force calculation. The cyclic process of dynamic loading of the ripper operating device was investigated. The methodology of system analysis, as well as the method of distribution of resistance forces over the geometric elements of the cutting edge, were used. The mathematical apparatus has been effectively applied to establish the dependences of the change in energy and power properties on performance indicators, soil rheology, and dynamic loads of the ripper tooth. The process of interaction of the ripper tooth tip with frozen soil was investigated. A method for substantiating the design parameters of the operating device by using Legendre polynomials was proposed. Separate calculation results subject to the introduced restrictions were presented for the condition for solving the problem. The optimal parameters of the transverse profile of the contact frontal surface of the earth-moving machine operating device were determined taking into account the coefficient of reducing the fracture resistance of frozen soils.

show abstract

“…According to previous studies, it was established that long-term rotary tillage hurts the surface layer of soil, and due to global climate change, water supply in agriculture is becoming increasingly problematic. When loosening a dense subsoil layer to a depth of up to 60 cm due to water consumption, the soil's water permeability and moisture capacity increase significantly; this makes the lateral roots of plants develop better, and the crop is heavy [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Development of model and analysis of one-dimensional movement of ploughshare of subsoiler

2023

View full text Add to dashboard Cite

Soil medium changes its structure and deforms when the actuating tool of an agricultural machine interacts with the soil. The effect of soil on the performance of the actuating tool can be taken into account through soil density and tensile strength. The model of a plastic medium proposed by Academician Kh.A. Rakhmatulin and simplified equations obtained based on the hypothesis of plane sections were used to describe the movement of soil near the point under finite deformations. It was stated that, depending on the coefficient of internal friction and cohesion of soil, a zone of high soil density could form near the actuating tool of the subsoiler ploughshare, where a significant increase in the resistance force is observed.

show abstract

Physical Modeling of the Contact Interaction Between Working Body of Digging Machine and Frozen Soil

Cited by 4 publications

References 0 publications

Bases of the method of physical modeling of the process of crushing of municipal solid waste

Bases of the method of physical modeling of the process of crushing of municipal solid waste

Study of the Spatial Distribution of Forces and Stresses on Wear Surfaces at Optimization of the Excavating Part of an Earthmoving Machine Transverse Profile

Development of model and analysis of one-dimensional movement of ploughshare of subsoiler

Contact Info

Product

Resources

About