Academic literature on the topic 'Finitely conducting soil'

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Journal articles on the topic "Finitely conducting soil"

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Le Vine, D. M., L. Gesell, and Michael Kao. "Radiation from lightning return strokes over a finitely conducting Earth." Journal of Geophysical Research 91, no. D11 (1986): 11897. http://dx.doi.org/10.1029/jd091id11p11897.

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Topalska, Maria, and Lena Mihova. "FEM Parameters for Earthquake Analysis of Retaining Walls." IOP Conference Series: Materials Science and Engineering 1323, no. 1 (2024): 012015. https://doi.org/10.1088/1757-899x/1323/1/012015.

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Abstract The paper presents the main characteristics and features of numerical finite element (FE) models for the study of the seismic response of soil-retaining wall. Since walls are linear structures, 2D plane strain models are suitable for conducting of the analysis. The models need to include a finitely sized soil domain, whose boundary conditions are defined according to the way earthquake loading is defined, respectively as pseudo-static impact or dynamic impact as a function of time. The FE mesh must meet the criteria of sufficient density in order to ensure the necessary accuracy of th
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Cooray, Vernon, Marcos Rubinstein, and Farhad Rachidi. "A Self-Consistent Return Stroke Model That Includes the Effect of the Ground Conductivity at the Strike Point." Atmosphere 13, no. 4 (2022): 593. http://dx.doi.org/10.3390/atmos13040593.

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A current generation type return stroke model which can take into account the possible modifications of the return stroke properties by the soil conductivity at the strike point of the lightning flash is introduced. The model is also capable of incorporating the reflection of the current at the ground end of the return stroke channel. In this paper, this return stroke model is used to investigate (a) the effect of the ground conductivity at the strike point on the source electromagnetic fields generated by return strokes and (b) the effect of current reflection at ground level on the electroma
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Jun, Sang Hyun, and Hyuk Jae Kwon. "Constitutive Relationship Proposition of Marine Soft Soil in Korea Using Finite Strain Consolidation Theory." Journal of Marine Science and Engineering 8, no. 6 (2020): 429. http://dx.doi.org/10.3390/jmse8060429.

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This paper proposes representative constitutive relationship equations of dredging and reclamation soft soil in Korea. The marine soft soils were sampled at 23 dredged-reclaimed construction sites in the Busan, Gwangyang, and Incheon regions in Korea; then, laboratory tests were carried out. The consolidation property was classified as LL = 60% for Busan and Gwangyang marine soft soil and LL = 30% for Incheon marine soft soil by conducting basic physical property tests and consolidation tests. Busan soft soil showed a slightly higher consolidation settlement property than Gwangyang soft soil.
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Rasouli, Habib, Hana Takhtfirouzeh, Abbasali Taghavi Ghalesari, and Roya Hemati. "Bearing Capacity Improvement of Shallow Foundations Using Cement-Stabilized Sand." Key Engineering Materials 723 (December 2016): 795–800. http://dx.doi.org/10.4028/www.scientific.net/kem.723.795.

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In order to attain a satisfactory level of safety and stability in the construction of structures on weak soil, one of the best solutions can be soil improvement. The addition of a certain percentage of some materials to the soil may compensate for its deficiency. Cement is a suitable material to be used for stabilization and modification of a wide variety of soils. By using this material, the engineering properties of soil can be improved. In this study, the effect of soil stabilization with cement on the bearing capacity of a shallow foundation was studied by employing finite element method.
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Ahmad, Majd, and Richard Ray. "Modeling the Stiffening Behavior of Sand Subjected to Dynamic Loading." Geosciences 14, no. 1 (2024): 26. http://dx.doi.org/10.3390/geosciences14010026.

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In geotechnical engineering, dynamic soil models are used to predict soil behavior under different loading conditions. This is crucial for many dynamic geotechnical problems related to earthquakes, train loading and machine foundation design. Researchers agree that under dry or drained conditions, cohesionless soils increase in stiffness with each loading cycle. Soil models that simulate the dynamic behaviors of soils are often coupled with the Masing criteria. Such models neglect the impact of stiffening during cyclic loading, leading to an underestimation in the shear modulus (G). This study
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Bondareva, Liudmyla, Ivan ZIMENKO, and Kostiantyn BONDAREV. "Interpretation of the data of modern methods of field soil research." Bases and Foundations, no. 48 (June 28, 2024): 61–74. http://dx.doi.org/10.32347/0475-1132.48.2024.61-74.

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This study examines modern in-situ testing methods for soils; it investigates the impact of interpreting these methods on the calculated strength and deformation parameters of soils and compares them with tabulated values according to the DSTU (Standard of Ukraine). In today's world, there is an urgent need for accurate and prompt soil investigations, which are crucial for design and construction. Although laboratory methods are reliable, they often require significant time and resources. The advantage of in-situ methods lies in the fact that testing is performed directly in the soil mass, mea
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Pang, Ying Bo. "Seismic Response Analysis of Soil-Structure Interaction on Base Isolation Structure." Advanced Materials Research 663 (February 2013): 87–91. http://dx.doi.org/10.4028/www.scientific.net/amr.663.87.

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As an effective way of passive damping, isolation technology has been widely used in all types of building structures. Currently, for its theoretical analysis, it usually follows the rigid foundation assumption and ignores soil-structure interaction, which results in calculation results distortion in conducting seismic response analysis. In this paper, three-dimensional finite element method is used to establish finite element analysis model of large chassis single-tower base isolation structure which considers and do not consider soil-structure interaction. The calculation results show that:
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Zhang, Hui, and Jing Zhang. "The Application of Finite Element Method in Calculating Two-Dimensional Heat Conduction in the Ground." Advanced Materials Research 988 (July 2014): 479–82. http://dx.doi.org/10.4028/www.scientific.net/amr.988.479.

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This thesis simulated the principle of the fast heat conductivity testing instrument, introduced how to use the finite element method to calculate two-dimensional unstable heat conduction condition. When establish the mathematical model, the article simplifies the soil temperature field as the two-dimensional non-stable heat conduction problem. Through computation it can get the soil temperature field at any moment in the running time and the plan uniform temperature lines, that also may obtain the change of temperature about one point in the process. The method is simple and credible. These s
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Dumais, Simon, and Jean-Marie Konrad. "One-dimensional large-strain thaw consolidation using nonlinear effective stress – void ratio – hydraulic conductivity relationships." Canadian Geotechnical Journal 55, no. 3 (2018): 414–26. http://dx.doi.org/10.1139/cgj-2017-0221.

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A one-dimensional model for the consolidation of thawing soils is formulated in terms of large-strain consolidation and heat-transfer equations. The model integrates heat transfer due to conduction, phase change, and advection. The hydromechanical behaviour is modelled by large-strain consolidation theory. The equations are coupled in a moving boundary scheme developed in Lagrangian coordinates. Finite strains are allowed and nonlinear effective stress – void ratio – hydraulic conductivity relationships are proposed to characterize the thawing soil properties. Initial conditions and boundary c
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Dissertations / Theses on the topic "Finitely conducting soil"

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Pal, Rupam. "Influence of Soil's Electrical Parameters on Lightning Stroke-current Evolution and Fields in the Close Range." Thesis, 2022. https://etd.iisc.ac.in/handle/2005/5813.

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The lightning return stroke forms one of the severest natural sources of electromagnetic interference for ground-based and airborne systems. Many physical fields are involved in this complex physical phenomenon. Several pertinent aspects are somewhat unclear, and it is not practical to conduct the field measurements to resolve them. One such important aspect, which is of practical relevance, is the influence of soil's electrical properties on the stroke current evolution and the fields in the soil. It formed the genesis of the present work. The collection of the required data from on-field me
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Book chapters on the topic "Finitely conducting soil"

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Clariá Juán José and Moreno Guillén Francis Morella. "Geosynthetic Reinforcement of Buried Flexible Pipes." In From Fundamentals to Applications in Geotechnics. IOS Press, 2015. https://doi.org/10.3233/978-1-61499-603-3-3201.

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Buried pipes perform a key role in urban centers, including multiple functions from fluid transport to electric lines conduction. Usually, flexible pipes design is developed by means of approximate formulations derived from the elasticity theory (v.g. Spangler Iowa). Although there are many studies about the interaction between a soil and a buried pipe, several failures are observed in these systems. In order to reduce the pipe deflections and stresses, the system reinforcement with a geosyntethic is proposed. The present paper shows the results of a parametric study about the interaction betw
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Ikeno Katsuya, Mitou Masaaki, Nakazawa Hiroshi, and Sugano Takahiro. "Countermeasure for Liquefaction to Runway Ground by Application of Chemical Grouting Method." In Deformation Characteristics of Geomaterials. IOS Press, 2011. https://doi.org/10.3233/978-1-60750-822-9-1303.

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In this study, the effect of partial soil improvement against liquefaction by a chemical grouting method is examined. In this proposed method, an unimproved liquefiable layer of uniform thickness is laid over the entire target area. Both model-scale and full-scale experiments were conducted in order to confirm the deformation characteristics of the runway ground. Following these experiments, we simulated the behavior of the runway pavement under a seismic load and the process of consolidation following liquefaction by conducting an effective stress analysis based on a finite element method. As
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Syed, Karimulla, Sai Sarath Kruthiventi, Yogesh Allamsetti, Agweu Remmy Duncan, and Nagaraju Vellanki. "Design and Parametric Analysis of Excavator Arm Using Finite Element Analysis." In Advances in Mechatronics and Mechanical Engineering. IGI Global, 2024. http://dx.doi.org/10.4018/979-8-3693-1966-6.ch009.

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Excavators are earth moving equipment used in excavating hard rocks and soil underneath the natural surface of the ground. Due to unpredictable conditions the excavator parts like boom, arm, bucket, and bucket teeth are subjected to high loads. During the excavation operation, there is an obscure resistance forces offered by the terrain to bucket teeth, which in turn are passed on to arm of the excavator. These forces have an adverse effect on the excavator. Thus, the excavator parts are made with high strength, which makes the parts heavy. This in turn increases the initial fabrication cost a
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Conference papers on the topic "Finitely conducting soil"

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Zeddam, A., J. Y. Lojou, and P. Degauque. "Field Radiated by Cloud-Ground Lightning Above a Finitely Conducting Soil. Study of the Domains of Validity of the Different Approximations of Sommerfeld Integrals. Elaboration of an Efficient Numerical Code." In EMC_1986_Wroclaw. IEEE, 1986. https://doi.org/10.23919/emc.1986.10828511.

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Tsunoda, Satomi, Masato Aoki, Yukinori Kiuchi, and Tooru Tsuru. "Current Distribution Simulation System Using Analogic Paper of Cathodic Protection for Tank Bottom Plate." In CORROSION 1990. NACE International, 1990. https://doi.org/10.5006/c1990-90407.

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Abstract Cathodic protection is known as effective Corrosion protection measure for steel structures built in the place near the sea where conductivity of the soil is low. However, it is not effective for an oil tank bottom plate which embeded on highly conduetive asphalt mortar or oil sand as anticorrosive bed. In order to clarify the reasons, steel probes to measure corrosion rate and inflow current, and plutinum probes to measure Oxygen diffusion Rate (O.D.R) were set in the anticorrosive bed of thirty tanks. From the result of measurements, the planning method for cathodic protection which
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Yi, Jiang Tao, Fook Hou Lee, Siang Huat Goh, Yu Ping Li, and Xi Ying Zhang. "Effective-Stress Finite Element Analysis of Spudcan Penetration." In ASME 2012 31st International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/omae2012-83138.

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The numerical modeling of spudcan penetration involves technical challenges posed by large soil deformation coupled with significant material non-linearity. The Lagrangian approach commonly used for solid stress analysis often does not work well with large deformations, resulting in premature termination of the analysis. Recently, the Arbitrary Langrangian Eulerian (ALE) and the Eulerian methods have been used in spudcan analysis to overcome problems caused by the soil flow and large deformation. However, most of the reported studies are based on total stress analysis and therefore shed no lig
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Shaukat, Syed K., and Vincent K. Luk. "Seismic Behavior of Spent Fuel Dry Cask Storage Systems." In 10th International Conference on Nuclear Engineering. ASMEDC, 2002. http://dx.doi.org/10.1115/icone10-22395.

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The U. S. Nuclear Regulatory Commission (NRC) is conducting a research program to investigate technical issues concerning the dry cask storage systems of spent nuclear fuel by conducting confirmatory research for establishing criteria and review guidelines for the seismic behavior of these systems. The program focuses on developing 3-D finite element analysis models that address the dynamic coupling of a module/cask, a flexible concrete pad, and an underlying soil/rock foundation, in particular, the soil-structure-interaction. Parametric analyses of the coupled models are performed to include
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Lin, M. L., F. S. Jeng, H. J. Wang, et al. "Response of Soil and a Submerged Tunnel During a Thrust Fault Offset Based on Model Experiment and Numerical Analysis." In ASME 2005 Pressure Vessels and Piping Conference. ASMEDC, 2005. http://dx.doi.org/10.1115/pvp2005-71179.

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Observed from the earthquake disasters occurred over the decades in Taiwan, the deformation of near surface soil was the major cause lead to damages of underground structures or pipe lines; for instance, the damage of diversion tunnel of Shih-Kang Dam in Chichi earthquake is a typical case. To study the process of fault propagation as well as the associated soil and structure deformation during a fault offset event, model experiments of simulating thrust fault offset were set up, in which non-cohesive sands was adopted simulating near surface soil. The results, obtained from experiment studies
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Deru, Michael P., and Allan T. Kirkpatrick. "Ground-Coupled Heat and Moisture Transfer From Buildings: Part 1 — Analysis and Modeling." In ASME 2001 Solar Engineering: International Solar Energy Conference (FORUM 2001: Solar Energy — The Power to Choose). American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/sed2001-109.

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Abstract Ground-heat transfer is tightly coupled with soil-moisture transfer. The coupling is threefold: heat is transferred by thermal conduction and by moisture transfer; the thermal properties of soil are strong functions of the moisture content; and moisture phase change includes latent heat effects and changes in thermal and hydraulic properties. A heat and moisture transfer model was developed to study the ground-coupled heat and moisture transfer from buildings. The model also includes detailed considerations of the atmospheric boundary conditions, including precipitation. Solutions for
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Deru, Michael P., and Allan T. Kirkpatrick. "Ground-Coupled Heat and Moisture Transfer From Buildings: Part 2 — Application." In ASME 2001 Solar Engineering: International Solar Energy Conference (FORUM 2001: Solar Energy — The Power to Choose). American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/sed2001-110.

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Abstract In this paper the effects of moisture on the heat transfer from two basic types of building foundations, a slab-on-grade and a basement, are examined. A two-dimensional finite element heat and moisture transfer program is used to show the effects of precipitation, soil type, foundation insulation, water table depth, and freezing on the heat transfer from the building foundation. Comparisons are made with a simple heat conduction model to illustrate the dependency of the soil thermal conductivity on moisture content.
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Gogoi, Ragini, Charles P. Aubeny, Phillip Watson, and Fraser Bransby. "Uplift Capacity of Suction Caissons in Sand for General Conditions Of Drainage." In ASME 2021 40th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/omae2021-61663.

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Abstract Suction caissons have emerged as a viable solution for the foundations of offshore wind turbines, which are gaining momentum worldwide as an alternate energy source. When used in a multi-bucket jacket system, the system capacity is often governed by the uplift capacity of the windward bucket foundation. Seabed conditions at offshore windfarm sites often comprise dense sand where the soil response may be drained, partially drained or undrained depending on the loading regime, the foundation dimensions and the soil conditions. Given the large difference in uplift capacity of caissons fo
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Dong, Shaoyang, and Xiong (Bill) Yu. "Microstructure-Based Random Finite Element Simulation of Thermal and Hydraulic Conduction Processes in Unsaturated Frozen Soils." In Geotechnical Frontiers 2017. American Society of Civil Engineers, 2017. http://dx.doi.org/10.1061/9780784480472.083.

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Alexander, Chris, Dave Runte, and Randy Long. "Assessing the Effects of Vibratory Loading on Pipelines Using Analysis and Monitoring Techniques." In ASME/JSME 2004 Pressure Vessels and Piping Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/pvp2004-3077.

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This paper provides the methods and results associated with an engineering assessment for a project involving pile driving adjacent to an active 6-inch (152 mm) nominal diameter gas pipeline. The pile driving was associated with the expansion of the I-95 Highway located in Daytona Beach, Florida. The work involved analysis, metallurgical field evaluation, and measurement of strain and acceleration in the pipe during the pile driving. The analysis involved using finite element methods to predict stresses in the pipe using acceleration loads provided during a previous pile driving exercise. Usin
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