Strength and Elastic Modulus of Frozen Sandy Soil as a Material for a Logging Road

Khoroshilov, Konstantin; Katarov, V.; Gavrilov, Timmo; Kolesnikov, Gennady

doi:10.15393/j2.art.2019.4742

Cited by 4 publications

(4 citation statements)

References 3 publications

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“…It can be assumed that the model ( 1)-( 18) is too simple to analyze such a complex object as a trabecular tissue, for which some transformation of the structure is possible [40,41] and changes in the interaction of structural elements during tension. The use of models with parameters [35,42] may be promising both for improving the results of the analysis and for expanding the scope of such models [43]. As can be seen, the model (16a) adequately reflects the trends of growth crease of apparent stresses at the stages before and after the point of the stress ex (Figure 10).…”

Section: Discussionmentioning

confidence: 96%

A Damage Model to Trabecular Bone and Similar Materials: Residual Resource, Effective Elasticity Modulus, and Effective Stress under Uniaxial Compression

Kolesnikov

Meltser

2021

Symmetry

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Experimental research of bone strength remains costly and limited for ethical and technical reasons. Therefore, to predict the mechanical state of bone tissue, as well as similar materials, it is desirable to use computer technology and mathematical modeling. Yet, bone tissue as a bio-mechanical object with a hierarchical structure is difficult to analyze for strength and rigidity; therefore, empirical models are often used, the disadvantage of which is their limited application scope. The use of new analytical solutions overcomes the limitations of empirical models and significantly improves the way engineering problems are solved. Aim of the paper: the development of analytical solutions for computer models of the mechanical state of bone and similar materials. Object of research: a model of trabecular bone tissue as a quasi-brittle material under uniaxial compression (or tension). The new ideas of the fracture mechanics, as well as the methods of mathematical modeling and the biomechanics of bone tissues were used in the work. Compression and tension are considered as asymmetric mechanical states of the material. Results: a new nonlinear function that simulates both tension and compression is justified, analytical solutions for determining the effective and apparent elastic modulus are developed, the residual resource function and the damage function are justified, and the dependences of the initial and effective stresses on strain are obtained. Using the energy criterion, it is proven that the effective stress continuously increases both before and after the extremum point on the load-displacement plot. It is noted that the destruction of bone material is more likely at the inflection point of the load-displacement curve. The model adequacy is explained by the use of the energy criterion of material degradation. The results are consistent with the experimental data available in the literature.

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Section: Discussionmentioning

confidence: 96%

A Damage Model to Trabecular Bone and Similar Materials: Residual Resource, Effective Elasticity Modulus, and Effective Stress under Uniaxial Compression

Kolesnikov

Meltser

2021

Symmetry

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“…An elaborative model considering the particle breakage and its plastic shear mechanisms is established by Chang et al [24]. The shear strength and elastic modulus of frozen soil as studied by Khoroshilov et al [25], observed the shear strength parameters of frozen soil. Also, the in uence of freezing and thawing cycles on wind erosion strength of black soil simulations done by Liu et al [15].…”

Section: Introductionmentioning

confidence: 99%

Experimental Studies on Frozen Soil

Gaur

Sahu

2021

Preprint

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Various studies have been carried out for soils at normal room temperature but the studies on frozen soils are meagre. For every construction, soil investigation is the most important and the primary step for a site. For constructions at normal room temperature, there are plenty of experimentation and research data on soil is available. But lack of research data for colder regions, where the ambient temperature is below zero degree Celsius for most of the time. It is therefore the need to study soil under iced condition to get a better idea about the behaviour of frozen soils. There are few research on construction and mechanical behaviour of frozen soil but no study on the very basic parameters of like void ratio, bulk density, porosity, and the degree of freezing and how these parameters change as the soil temperature changes from normal room temperature to negative values. The main emphasis is on the study and experimentation on frozen soil and to formulate different relationships between individual soil parameters at various temperatures. The methodology used is to model the soil surface (open grounds in colder regions) by taking sand as the soil after sieving. The model samples are taken into beakers with different bulk densities to replicate real site condition in the freezer. Then by calculating factors like density, porosity, void ratio, etc at negative temperature (-5, -10, -15, -20 degree Celsius) and forming relationship with same parameters with that on room temperature. The experimental data obtained is used in “Eureqa software” that will utilize the input so provided and will find mathematical relation that exist in the soil parameters.

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“…An elaborative model considering the particle breakage and its plastic shear mechanisms is established by Chang et al [24]. The shear strength and elastic modulus of frozen soil as studied by Khoroshilov et al [25], observed the shear strength parameters of frozen soil. Also, the influence of freezing and thawing cycles on wind erosion strength of black soil simulations done by Liu et al [15].…”

Section: Introductionmentioning

confidence: 99%

Experimental Studies on Frozen Soil

Gaur

Sahu

2021

Preprint

View full text Add to dashboard Cite

Various studies have been carried out for soils at normal room temperature but the studies on frozen soils are meagre. For every construction, soil investigation is the most important and the primary step for a site. For constructions at normal room temperature, there is plenty of experimentation and research data on soil is available. But lack of research data for colder regions, where the ambient temperature is below zero degrees Celsius for most of the time. It is therefore the need to study soil under the iced condition to get a better idea about the behaviour of frozen soils. There is little research on the construction and mechanical behaviour of frozen soil but no study on the very basic parameters like void ratio, bulk density, porosity, and the degree of freezing and how these parameters change as the soil temperature changes from normal room temperature to negative values. The main emphasis is on the study and experimentation of frozen soil and the formulation of different relationships between individual soil parameters at various temperatures. The methodology used is to model the soil surface (open grounds in colder regions) by taking sand as the soil after sieving. The model samples are taken into beakers with different bulk densities to replicate real site conditions in the freezer. Then by calculating factors like density, porosity, void ratio, etc at negative temperature (-5, -10, -15, -20 degree Celsius) and forming a relationship with the same parameters as that on room temperature. The experimental data obtained is used in “Eureqa software” that will utilize the input so provided and will find mathematical relations that exist in the soil parameters.

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Strength and Elastic Modulus of Frozen Sandy Soil as a Material for a Logging Road

Cited by 4 publications

References 3 publications

A Damage Model to Trabecular Bone and Similar Materials: Residual Resource, Effective Elasticity Modulus, and Effective Stress under Uniaxial Compression

A Damage Model to Trabecular Bone and Similar Materials: Residual Resource, Effective Elasticity Modulus, and Effective Stress under Uniaxial Compression

Experimental Studies on Frozen Soil

Experimental Studies on Frozen Soil

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