The Generalized Mohr-Coulomb Failure Criterion

Tian, Dongshuai; Zheng, Hong

doi:10.3390/app13095405

Cited by 7 publications

(2 citation statements)

References 43 publications

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“…It takes into account five input variables: elasticity modulus (E), Poisson's ratio (v), cohesion (c), internal friction angle, and dilatancy angle (ψ). These variables collectively contribute to the overall assessment of soil characteristics 43 .…”

Section: Methodsmentioning

confidence: 99%

Numerical analysis of pile group, piled raft, and footing using finite element software PLAXIS 2D and GEO5

Chimdesa,

Jilo

et al. 2023

Sci Rep

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Foundation plays a vital role in weight transfer from the superstructure to substructure. However, foundation characteristics such as pile group, piled raft, and footing remain unfolded due to their highly non-linear behaviour in different soil types. Bibliography analysis using VOSvierwer algorithm supported the significance of the research. Hence, this study investigates the load-bearing capacity of different types of foundations, including footings, pile groups, and piled rafts, by analyzing experimental data using finite element tools such as PLAXIS 2D and GEO5. The analysis involves examining the impact of various factors such as the influence of surcharge and the effect of different soil types on the load-bearing capabilities of the different types of foundation. For footing, parametric investigations using PLAXIS 2D are conducted to explore deformational changes. Pile groups are analyzed using GEO5 to assess their factor of safety (FOS.) and settling under various criteria, such as pile length and soil type. The study also provides insight into selecting the right type of foundation for civil engineering practice. Findings showed that different soil types have varying deformational behaviours under high loads with sandy soil having less horizontal deformation than clayey soil. Also, it was observed that increasing the pile thickness by 50% resulted in a reduction of 13.88% in settlement and an improvement of 16.66% in the FOS. In conclusion, this study highlights the importance of professionalism, exceptional talent, and outstanding decision-making when assessing the load-bearing capabilities of various foundation types for building structures.

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Section: Methodsmentioning

confidence: 99%

Numerical analysis of pile group, piled raft, and footing using finite element software PLAXIS 2D and GEO5

Chimdesa,

Jilo

et al. 2023

Sci Rep

View full text Add to dashboard Cite

show abstract

“…It is also a powerful tool for determining the cohesion and friction angle of rocks, which are important parameters to determine for the reliable prediction and design of structures in rock masses. However, the Mohr-Coulomb failure criterion has its own drawbacks, as given below (Stacey [14]; Saeidi et al [15]; Tian and Zheng [16]; Wu et al [17]):…”

Section: Mohr-coulomb Failure Criterionmentioning

confidence: 99%

Numerical Modelling Application in the Management of Deep Mining Excavation Stresses: An Illustrative Study

Zvarivadza

2023

Mining

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Numerical modelling is an important instrument for rock engineering; it can assist in the design and prediction of failure in rock masses. Dependable results can be obtained from the models if, and only if, the underlying assumptions, strengths, and weaknesses of the model are known. A set of guidelines to implement a numerical modelling program can also be used to obtain high-quality and reliable results. The importance of a well-structured numerical modelling program to attain practically reasonable results cannot be overstated. This paper presents an analysis of the results of modelling a rock engineering problem involving deep mining excavations prone to high-stress challenges. The study used Lamodel and Examine 2D. The results obtained show that the two software programs can be used together to complement each other in attaining a deeper understanding of the influence of high stresses on mining excavations at depth. Lamodel and Examine 2D are both boundary element code-based software and are quick and easy to use. More advanced numerical modelling tools could be used, but these two were found to be suitable for the problem at hand. Many diagrams and results can be obtained from the numerical modelling of any rock engineering challenge; in this paper, only those diagrams and results deemed to be most relevant and appropriate to demonstrate the capabilities, limitations, and validity of the numerical modelling of the problem have been presented.

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Numerical investigation of thermal damage in rocks under high‐voltage electric pulse

Zhu,

Liu,

Liu

et al. 2024

Contrib. Plasma Phys

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The high‐voltage electric pulse fracturing (HVEPF) technology represents a novel and highly promising approach in rock fracturing. The investigation of thermal damage inflicted upon rocks by high‐voltage electrical pulses under multi‐physical field coupling is of great significance in the development of deep geothermal energy. This study establishes a damage model for rocks under electric fragmentation conditions by integrating electric field, heat transfer field, and solid mechanics field. Based on the developed damage model, the insulating properties, temperature variations, and forms of damage of rocks during electric fracturing are explored. Subsequently, the influence of voltage on rock damage status is investigated. The findings reveal that damage to the rock does not occur immediately after electrical breakdown; rather, it increases with the growth of current and temperature within the breakdown channel. Initial damage occurs at the ends of the breakdown channel, followed closely by damage in the central region of the channel. The predominant form of damage in rocks is tensile failure, with shear failure playing a secondary role, and the volume of damage increases with voltage. These results elucidate the characteristics of rock damage during electric fracturing, providing valuable insights for the engineering application of electric fracturing techniques.

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The Generalized Mohr-Coulomb Failure Criterion

Cited by 7 publications

References 43 publications

Numerical analysis of pile group, piled raft, and footing using finite element software PLAXIS 2D and GEO5

Numerical analysis of pile group, piled raft, and footing using finite element software PLAXIS 2D and GEO5

Numerical Modelling Application in the Management of Deep Mining Excavation Stresses: An Illustrative Study

Numerical investigation of thermal damage in rocks under high‐voltage electric pulse

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