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Journal articles on the topic 'Column unit; contact element'

Author: Grafiati

Published: 30 May 2022

Last updated: 31 July 2025

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1

Li, Zhi Miao, Ju Bao Liu, Min Luo, and Qiang Zhang. "Dynamic Finite Element Analysis and Experimental Study of Rotating Column in Cylinder." Applied Mechanics and Materials 229-231 (November 2012): 453–56. http://dx.doi.org/10.4028/www.scientific.net/amm.229-231.453.

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Rotary slender column in cylinder is a special structure in oil engineering. It contacts with outer cylinder and interacts with its inner pipe fluid and outer annular fluid. A partitioned coupling model was founded by dispersing slender column into beam element, dividing fluid domain into some sections, dispersing fluid section into hexahedron unit and transfer method of the information of coupling interface was described. Dynamics experimental device of column-liquid interaction was built to do column rotating test with considering the displacement and force boundary conditions of rotating co

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2

Wang, Bin, Peng Ju Sun, Xin Wang, and Ya Feng Xu. "Finite Element Analyze on the CFRP Steel Reinforced Concrete Filled with Steel Tube Column under Biaxial Load." Advanced Materials Research 680 (April 2013): 172–76. http://dx.doi.org/10.4028/www.scientific.net/amr.680.172.

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The paper focuses on the research of mechanical behavior of the CFRP steel reinforced concrete filled with steel tube column under biaxial load. The authors make a simulated analysis mode with the general finite element analyze software, ABAQUS. By the way of unit selecting, meshing, contact setting, the mode is calculated by the ABAQUS/Standard which is used to analyze the mechanical behavior of the specimens. Based on comparing the load-displacement curves under different axial compression ratios, it can conclude that with the increasing of compression, the ultimate load reduces obviously. A

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3

Savin, Sergey. "NUMERICAL ANALYSIS OF REINFORCED CONCRETE BEAM-COLUMN JOINT UNDER ACCIDENTAL IMPACT." Journal of the Serbian Society for Computational Mechanics 15, no. 1 (2021): 149–66. http://dx.doi.org/10.24874/jsscm.2021.15.01.10.

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The purpose of this study is to create a universal computational model of a plane-stressed joint element, which could be implemented as a special finite element of the beam-column subassembly integrated into the FEA procedure to improve its accuracy. The combination both of the finite element method and the finite difference method has been accepted to simulate the structural behavior of monolithic reinforced concrete joints of building frames. The finite difference method is used directly for analysis the stress-strain state of a 2D stressed member of a monolithic joint, and the FEM is used f

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4

Porokhnia, Mykola, Oleksii Shestopalov, Svitlana Bukhkalo, and Tetiana Novozhylova. "Influence of structural descriptions of underbody of bicarbonate columns on duration of period of their operation and ecologization of process." ScienceRise, no. 3 (June 30, 2021): 3–11. https://doi.org/10.21303/2313-8416.2021.001917.

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Object of research: optimization of the operation period of bicarbonate columns by optimizing their design features. Investigated problem: increasing the efficiency, environmental friendliness and duration of the bicarbonate columns by optimizing the design of the sludge discharge unit. Main scientific results: the article analyzes the main design features of bicarbonate columns for the production of purified sodium bicarbonate. A relationship has been established between the design of the apparatus, the intensity of mixing and the duration of the apparatus operation without stopping for washi

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BĄK, KRZYSZTOF, JOANNA KOWALCZYK, ANNA WOLSKA, MARTA BĄK, and LUCYNA NATKANIEC-NOWAK. "Iron and silica enrichments in the middle Albian neptunian dykes from the High-Tatric Unit, Central Western Carpathians: an indication of hydrothermal activity for an extensional tectonic regime." Geological Magazine 155, no. 1 (2016): 1–19. http://dx.doi.org/10.1017/s0016756815001132.

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AbstractStudies dealing with the response of subaqueous volcanic and hydrothermal activities to carbonate sedimentation in hemipelagic environments affected by tectonic processes are comparatively rare. Here, a microfacies record with combined chemical data from the neptunian dykes found at an intrabasinal ridge (Tatric Ridge; Carpathian domain of the Western Tethys), close to a source of alkaline volcanism with possible hydrothermal vents (Zliechov Basin), is presented. The characteristic features of the neptunian dykes, up to 20 cm thick, in the middle Albian echinoderm-foraminiferal limesto

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Borushchak, L. O., and B. B. Vynnychuk. "IMPROVEMENT OF THE CONSTRUCTION AND COMPUTER DEVICE INVESTIGATION FOR THE PROCESSING OF BLOWOUT-PREVENTION HARDWARE EQUIPMENT." Scientific Bulletin of Ivano-Frankivsk National Technical University of Oil and Gas, no. 1(46) (June 26, 2019): 16–24. http://dx.doi.org/10.31471/1993-9965-2019-1(46)-16-24.

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The research deals with the problem of blowout equipment test for tightness before implementation. The indicated equipment includes a stem, a system of pipelines with valves and a control system. The classic test procedure requires a mobile pumping installation that provides a pressure of 35 MPa.The cost of such tests is rather high. For testing without a pump unit, a design of a device for increased tightness has been developed, including a sealing unit of the mouth from the main column and a piston unit for creating high pressure in the test volume. Generation of a high pressure occurs by li

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Bonhomme, M., F. Rogalla, G. Boisseau, and J. Sibony. "Enhancing Nitrogen Removal in Activated Sludge with Fixed Biomass." Water Science and Technology 22, no. 1-2 (1990): 127–35. http://dx.doi.org/10.2166/wst.1990.0142.

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To upgrade existing activated sludge treatment plants, different techniques that would remove an important flux of nitrogen rapidly on a great number of units were investigated. Nitrification with conventional activated sludge systems requires considerable multiplication of tankage volume. The necessary investment and space is not always available, especially since many older plants are now in urbanized areas. To lower the nitrogen load in receiving water, the first priority should be to obtain partial nitrogen removal with existing plants, using methods that are simple to adapt.Three techniqu

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Javadi, Masoud, Erick I. Saavedra Saavedra Flores, Sergio J. Yanez, Siva Avudaiappan, Juan C. Pina, and Carlos F. Guzmán. "Investigation of the Influence of Design Parameters on the Strength of Steel–Concrete Composite Shear Walls by Finite Element Simulations." Buildings 13, no. 1 (2023): 187. http://dx.doi.org/10.3390/buildings13010187.

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In this paper, the influence of design parameters on the strength of steel–concrete composite shear walls is investigated by means of finite element (FE) simulations. The shear wall typology studied in this paper consists of multiple composite plate shear wall-concrete encased on one or both sides of the plates. The FE models include contact technology to capture debonding between concrete and steel, tensile cracking in concrete, and large deflection theory involving local instabilities. Some design parameters considered in this work are the height-to-width ratio of the steel plates and their

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Khabibullin, Marat Ya. "Evaluation of stresses on the surface of production columns equipped with sand filters when downing into a horizontal well." Bulletin of the Tomsk Polytechnic University Geo Assets Engineering 335, no. 8 (2024): 56–67. http://dx.doi.org/10.18799/24131830/2024/8/4370.

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Relevance. The need to estimate the time of formation sand accumulation near the annulus of a horizontal well and the unit length of filter elements in the bottom of production strings and to determine the stresses on the surface of production strings equipped with sand filters when lowering into the well. Aim. Based on a study of the reasons for the continued flow of sand into wells equipped with anti-sand filters, to develop and propose measures related to the need to choose a reduction in the number of filters that provide the design flow rate of a horizontal well or a significant increase

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Brinkman, F. P., T. V. Kane, R. R. McCullough, and J. W. Miertschin. "Use of Full-Field Simulation to Design a Miscible CO2 Flood." SPE Reservoir Evaluation & Engineering 2, no. 03 (1999): 230–37. http://dx.doi.org/10.2118/56882-pa.

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Summary A study using full-field reservoir modeling optimized the design of a miscible CO2 flood project for the Sharon Ridge Canyon Unit. The study began with extensive data gathering in the field and building a full-field three-dimensional geologic model. A full-field simulation model with relatively coarse gridding was subsequently built and used to history match the waterflood. This waterflood model highlighted areas in the field with current high oil saturations as priority targets for CO2 flooding and generated a forecast of reserves from continued waterflooding. Predictions for the CO2

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Sorokin, V. V. "Calculation of Start-Up Time of Passive Catalytic Hydrogen Recombiner of Localization Safety System of a Nuclear Power Plant Equipped with VVER." ENERGETIKA. Proceedings of CIS higher education institutions and power engineering associations 65, no. 1 (2022): 67–75. http://dx.doi.org/10.21122/1029-7448-2022-65-1-67-75.

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The hydrogen removal system ensures hydrogen safety. At a VVER nuclear power plant, it consists of passive catalytic hydrogen recombiners. The calculation of devices is of great importance for safety justification, since the complex conditions of an accident at a power unit are not reproducible in experiments. The recombiner consists of a casing and a cassette with catalytic elements, the design of which ensures the passage of a gaseous medium through the device. Upon contact with the catalyst, a chemical reaction of hydrogen and oxygen compounds occurs, accompanied by the release of heat; as

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Wang, Xian Zhi. "Study on Efficiency Factor of Bearing Capacity of Multi-Element Composite Foundation of Concrete Column and Lime Column." Advanced Materials Research 255-260 (May 2011): 178–82. http://dx.doi.org/10.4028/www.scientific.net/amr.255-260.178.

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Based on the model tests and the results of theoretical research, considered elasto-plasticity of the soil and highly nonlinear behavior of contact with columns and soil, more reasonable numerical model on multi-element composite foundation of concrete column and lime column was built. By changing the design parameters (the diameter of concrete column, the diameter of lime column, the length of lime column, cushion thickness), efficiency factors of bearing capacity of multi-element composite foundation on concrete column and lime column were to play a more systematic study. Some conclusions we

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Bouboulas, Athanasios, and Nikolaos Anifantis. "Three-dimensional finite element modeling for post-buckling analysis of cracked columns." International Journal of Structural Integrity 7, no. 3 (2016): 397–411. http://dx.doi.org/10.1108/ijsi-01-2015-0003.

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Purpose – The purpose of this paper is to investigate the effect of crack surfaces contact on the post-buckling behavior of a slender column with a non-propagating crack. Design/methodology/approach – In this paper a 3D finite element model has been implemented to study the post-buckling behavior of a slender column with a non-propagating crack. According to this model, the column is discretized into three-dimensional solid elements. Contact conditions are considered between the crack surfaces. The non-linear equations for this model are solved using an incremental-iterative procedure, and the

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Wan, Jia, Qing Fang Niu, Guan Feng Qiao, and Tie Ying Li. "Finite Element Analysis of Chinese Traditional Hall-Style Timber Structure." Advanced Materials Research 1008-1009 (August 2014): 1201–4. http://dx.doi.org/10.4028/www.scientific.net/amr.1008-1009.1201.

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This paper uses general finite element software Abaqus to simulate three Chinese traditional hall-style structures recorded in the book <<Yingzao Fashi>>. With Abaqus having an advantage in dealing with contact problems, three hall-style timber structure finite element analysis models have been established within the 3D solid element which is used to model beams, columns, brackets and other structural members in the modeling. Contact pairs also have been used to simulate the interaction between the structure members like beam-column contact pair, column-foot foundation contact pair

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Yue, Qing Xia, and Xin Zhang. "Finite Element Analysis on Mechanical Behavior of Column Underpinning Joints for Building Moving." Advanced Materials Research 255-260 (May 2011): 1974–78. http://dx.doi.org/10.4028/www.scientific.net/amr.255-260.1974.

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The building moving has more than 100 years’ history. In the building moving, the design of the underpinning joints is one of the key problems. As to the frame structure, the most widely used method is the double beam underpinning system. Our research group has conduct 16 underpinning joints tests considering the different influential factors to study the mechanical performance of it. This paper first introduces the experiment briefly. And then make finite element analysis on the mechanical behavior of the column underpinning joints using the software ABAQUS as the platform. In the finite elem

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Cui, Zhao Xia, Yu Peng Guo, Zhi Jun Zhang, Yong Zhi Gong, and Shao Hua Qian. "Optimization Design of Bolted Connections Based on Contact Stress." Advanced Materials Research 694-697 (May 2013): 211–15. http://dx.doi.org/10.4028/www.scientific.net/amr.694-697.211.

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In a sling and hoisting structure consists of seamless steel tubes as hoisting column, bolts and connectors, all the weights are supported by bolted joints. For the bolt joint is located near the end of the hollow column, the position of the holes in sling column have important influence on the loading ability of the structure. In order to study the reliability of the sling structure, the contact stresses between bolts and its connectors are calculated theoretically and by using FEM (finite element method), and the optimum position of the holes are determined further.

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Zhang, Yusen, Yan Xu, Guangyao Li, Guanbao Ye, and Zhen Zhang. "Basic Mechanical Properties of Unit Cell-based Stiffened Deep Mixed Column." IOP Conference Series: Earth and Environmental Science 1336, no. 1 (2024): 012014. http://dx.doi.org/10.1088/1755-1315/1336/1/012014.

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Abstract As a composite column, stiffened deep mixed (SDM) column is formed by inserting a precast concrete core pile into the center of a deep mixed (DM) column. When SDM columns are used to support embankments over soft soil, they would be failed by shearing, compression, tension, and bending. This study conducted a series of laboratory tests to investigate the basic mechanical properties of a unit cell of SDM column, including uniaxial compression, direct shear and tension tests. The results reveal that the impact on improvement was minimal at a core ratio of 9.8%, subsequently followed by

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Voinov, Nikolai A., Anastasiya V. Bogatkova, and Denis A. Zemtsov. "Intensification of Heat and Mass Transfer in a Diabatic Column with Vortex Trays." ChemEngineering 6, no. 2 (2022): 29. http://dx.doi.org/10.3390/chemengineering6020029.

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We used vortex contact devices that we developed and investigated to make a new design of an alcohol diabatic distillation column with heat exchange pipes (as the reflux condenser) passing through concentrating section trays. In the column, ascending vapors partially condensed on the surface of vertically installed heat exchange tubes, forming a reflux. The reflux was then mixed with the draining liquid flow in the vortex contact devices placed on the trays. Heat was removed from the column through the boiling of the draining water film along the inner surface of the heat exchange pipes. We co

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Shahu, J. T., and Y. R. Reddy. "Estimating long-term settlement of floating stone column groups." Canadian Geotechnical Journal 51, no. 7 (2014): 770–81. http://dx.doi.org/10.1139/cgj-2012-0477.

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Design charts for estimating long-term drained settlement of floating stone column group foundations are presented based on three-dimensional, elastoplastic, finite element analyses. In the analyses, the soft soil behavior is represented by the modified Cam-clay model while the stone column and mat are represented by the Mohr–Coulomb model. The finite element predictions are calibrated against model test results. A detailed parametric study of prototype stone column group foundations of various configurations is carried out to evaluate the relative importance of various foundation parameters o

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Yang and Li. "Development of a Refined Analysis Method for Earthquake-Induced Pounding between Adjacent RC Frame Structures." Sustainability 11, no. 18 (2019): 4928. http://dx.doi.org/10.3390/su11184928.

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Pounding of two adjacent structures is one of the factors that cause damage and hinder sustainable use of reinforced concrete (RC) frame structures under strong ground motion excitations. This study developed a pounding analysis method with a refined beam-column element in order to solve the pounding problem between two RC frame structures. The analysis method combines the fiber beam-column element model with the element sections discretized into concrete and longitudinal rebar fibers, the Hertz-damp contact element model to describe the pounding between beam-column elements, and the method to

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Chen, Lan Xiang, De Shen Zhao, and Lei Liu. "Finite Element Analysis’s Discussion of Steel-Concrete." Advanced Materials Research 1089 (January 2015): 299–302. http://dx.doi.org/10.4028/www.scientific.net/amr.1089.299.

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To analyze the mechanical properties of steel tube filled with steel-reinforced concrete(STSRC), the mechanical models and some related problems of STSRC under different loading ways are proposed for the analysis on the base of finite element software: the concrete plastic damage constitutive model, the contact between steel and the treatment of boundary condition, etc. There are three types of specimen for analysis: short column, long column and pure bending beam. The results indicate that the mechanical models and the relevant technical analysis of STSRC are reasonable, and are beneficial to

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Ramadhan, Mildariezka Salsabila, Fikri Alami, Mohd Isneini, and Vera Agustriana Noorhidana. "Study Of The Behavior Of Anchor Connections In Concrete Based On Finite Element Analysis." Journal of Advanced Civil and Environmental Engineering 6, no. 1 (2023): 1. http://dx.doi.org/10.30659/jacee.6.1.1-11.

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The anchorage system is one of the techniques used to connect a new structure to the existing structure. The purpose of this study was to determine the behavior between the anchorage connection model in the existing column structure and the new beam using an adhesive anchoring system, and the monolithic column-beam structure model using a program based on the finite element method, Abaqus CAE. The analysis was executed on two models, the monolithic construction model and the anchor joint connection structure model. The same load was applied for both models at the ends of the beams. In the mono

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Zheng,, Y., Y. Rong, and, and Z. Hou. "A Finite Element Analysis For Stiffness of Fixture Units." Journal of Manufacturing Science and Engineering 127, no. 2 (2005): 429–32. http://dx.doi.org/10.1115/1.1871183.

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This paper presents a systematic finite element model to predict the fixture unit stiffness by introducing nonlinear contact elements on the contact surface between fixture components. The contact element includes three independent springs: two in tangential directions and one in the normal direction of the contact surface. Strong nonlinearity is caused by possible separation and sliding between two fixture components. The problem is formulated by the penalty function method and is solved by the Newton-Raphson procedure. The model was validated by two cases of analysis of a linear cantilever b

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Li, Hai Ning, Dan Li, and Xin Xin. "The Finite Element Analysis of Lei-Ring Applied to Upright Column for Hydraulic Support." Applied Mechanics and Materials 635-637 (September 2014): 541–44. http://dx.doi.org/10.4028/www.scientific.net/amm.635-637.541.

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Abstract:In this paper ,the finite element model of the lei-ring was established in ANSYS software,the sealing performance of hydraulic support column piston was analyzed.Also,the numerical simulation analysis was made of the impact of column working pressure on the sealing performance,and a series of the integrated equivalent stress and contact pressure images of sealing ring when working were got. From those images,the location most prone to failure can be concluded.All of work can provide a theoretical reference for the design and use of drum sealing ring used on hydraulic support upright c

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Shah, Gul Jamil, Aamer Nazir, Shang-Chih Lin, and Jeng-Ywan Jeng. "Design for Additive Manufacturing and Investigation of Surface-Based Lattice Structures for Buckling Properties Using Experimental and Finite Element Methods." Materials 15, no. 11 (2022): 4037. http://dx.doi.org/10.3390/ma15114037.

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Additive Manufacturing (AM) is rapidly evolving due to its unlimited design freedom to fabricate complex and intricate light-weight geometries with the use of lattice structure that have potential applications including construction, aerospace and biomedical applications, where mechanical properties are the prime focus. Buckling instability in lattice structures is one of the main failure mechanisms that can lead to major failure in structural applications that are subjected to compressive loads, but it has yet to be fully explored. This study aims to investigate the effect of surface-based la

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Wang, H. L., S. W. Liu, and Z. Zhang. "Seismic Performance and Effects of Different Joint Shapes for Unbonded Precast Segmental Bridge Columns." Journal of Mechanics 32, no. 4 (2016): 427–33. http://dx.doi.org/10.1017/jmech.2016.22.

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AbstractTo study the seismic performance and the effects of different joint shapes for unbonded precast segmental bridge columns under low-reversed cyclic loading, two 3-D finite element (FE) models respectively using plane-contact joints and shear resistant joints were established. In the FE models, the mechanical behaviors of concrete and tendons were respectively described by the damage-plastic model and the bilinear model, and the contact criteria was based on Coulomb's Friction. The results of nonlinear time history analysis showed that the deformation of the columns was mainly composed o

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Kapustina, Natalia, Vladimir Malygin, Vladimir Melekhov, and Vladimir Slutskov. "Modeling of Discrete Contacts for the Thermodynamic Element System of a Modular Wood-Milling Cutter." Lesnoy Zhurnal (Forestry Journal), no. 4 (July 21, 2021): 162–72. http://dx.doi.org/10.37482/0536-1036-2021-4-162-172.

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Operational capability of a modular wood-cutting tool depends, besides many factors, on the design features of cutting element fastening unit. There are no clear and precise methods that explain major factors influencing tool durability for selecting the design of the modular wood-cutting tool, which would meet production requirements. Thermodynamics modeling under contact interaction of elements enables to choose a design for effective application and increases the tool efficient life. The research purpose is modeling of thermodynamic processes in the cutter element fastening unit in the wood

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Scherbin, Sergey, and Ivan Dobrynin. "IMPROVING THE EFFICIENCY OF THE BENZENE EXTRACTION UNIT FROM THE DEALKYLATE OF THE PYROTOL BENZENE PRODUCTION PLANT." Modern Technologies and Scientific and Technological Progress 2024, no. 1 (2024): 89–90. http://dx.doi.org/10.36629/2686-9896-2024-1-89-90.

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Podshivalov, I. I. "Joint Operation of Column Base Metal Plate and Reinforced Concrete Slab of Post Footing of Industrial Building." Vestnik Tomskogo gosudarstvennogo arkhitekturno-stroitel'nogo universiteta. JOURNAL of Construction and Architecture 26, no. 4 (2024): 176–86. http://dx.doi.org/10.31675/1607-1859-2024-26-4-176-186.

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The paper studies the joint operation of the base metal plate of column base and reinforced concrete slab of post spread footing of industrial building of a reconstructed industrial building.Purpose: The achievement of the stress-strain state of the base metal plate of the column base, reinforced concrete slab of the post footing, contact forces between them and their distribution along the contact plane.Methodology/approach: The theoretical model of the joint operation of these elements is performed in Ing + 2021, MicroFe software with the proposed finite element model.Research findings: The

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Umergalin, Talgat G., Fedor B. Shevlyakov, and Artur F. Grigorev. "A COMPUTATIONAL SCHEME FOR MODELING THE PROCESS OF MULTICOMPONENT MIXTURE FRACTIONATION." Oil and Gas Business, no. 2 (April 22, 2025): 258–73. https://doi.org/10.17122/ogbus-2025-2-258-273.

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From the equations of the component-by-component material balance of the contact stage and the phase equilibrium of the components, a system of linear equations with respect to the concentrations of the components is obtained. The matrix of the system is ribbon, tridiagonal without a pronounced diagonal predominance of elements. The value of the determinant of the matrix of the system is close to zero, we have a weakly conditioned system. The conditionality of the system can be improved somewhat by introducing a fictitious stage for the feed stream, eliminating the mass-heat exchange contact o

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Kostikov, Andrii O., and Serhii A. Palkov. "Contact Deformation of the Pipeline Sealing Unit." Journal of Mechanical Engineering 23, no. 4 (2020): 52–62. http://dx.doi.org/10.15407/pmach2020.04.052.

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The features of the turbine steam line sealing unit stress-strain state are examined on the basis of the usage of a three-dimensional design model of the construction and contacting surfaces. The considered unit consists of the pipeline, a crimp casing consisting of two halves with an outlet in one of them, and a gasket. A mathematical model that takes into account the mechanical loads caused both by the internal steam pressure on the steam line wall and by the casing fasteners tightening has been formed. This model also includes contact interaction in the sealing unit on the contact surface o

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Wen, Duo, Xiao’an Zhang, and Li Yang. "Analysis of structural dynamic response of vertical sound barriers under natural wind and vehicle induced pulsating wind effects." Journal of Physics: Conference Series 2791, no. 1 (2024): 012049. http://dx.doi.org/10.1088/1742-6596/2791/1/012049.

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Abstract Aiming at the influence of natural wind and vehicle-induced pulsating wind on vertical sound barriers, a finite element plug-in panel sound barrier is established based on the finite element method for dynamic response analysis. This paper establishes a sound barrier finite element analysis model based on finite element analysis software. It takes the 8-span vertical sound barrier as the basic working condition to analyze the dynamic response analysis of the sound barrier structure under the action of natural wind of different grades, i.e., the influence of pressure and displacement;

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H. Sulaymon, Abbas, Abdul Razzak H. Al.Karaghouli, and Mustafa Hassan Flayeh. "The Factors Affecting the Absorption of Ozone in Water." Iraqi Journal of Chemical and Petroleum Engineering 10, no. 1 (2009): 29–34. http://dx.doi.org/10.31699/ijcpe.2009.1.5.

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This study was concerned with using ozone gas in drinking water treatment plant at Ibn-Sina Company. The main purpose of this research is to find the best contactor for ozone unit proposed. An investigation was conducted to study the absorption of ozone by water in two type of absorber. The effects of the process variables (such as height of water column, contact time, and pH) on the amount of ozone absorbed were investigated. Box-Wilson central composite rotatable design is used to design the experimental work for the mentioned variables. It was found that the optimum value of the variables s

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Li, Guo Chang, Chen Fang, and Hong Ping Yu. "Finite Analysis on Performance of Joint between Gangue Concrete Filled Steel Tubular Column with through Rebar and Gangue Concrete Beam under the Monotonic Loading." Applied Mechanics and Materials 204-208 (October 2012): 3724–30. http://dx.doi.org/10.4028/www.scientific.net/amm.204-208.3724.

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In order to study the performance of the joint between gangue concrete filled steel tubular column with through rebar and gangue concrete beam under the monotonic loading, element analysis model, which is taken into consideration the material nonlinearity, the geometrical nonlinearity and the contact nonlinearity, is established by finite element analysis software ABAQUS. The results show the force transferring mechanism, the stress distribution, the failure model and the load-displacement curve of the joint under the monotonic loading. It indicates in this paper that the joint between gangue

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Cao, Sheng Yong, Liang Xuan, and Ying Shi Sun. "Study on Failure Trend of Double Column Deflection Machine Structure on Basis of Static Strength Analysis." Applied Mechanics and Materials 351-352 (August 2013): 964–68. http://dx.doi.org/10.4028/www.scientific.net/amm.351-352.964.

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To ensure the safe use of double column deflection machine for processing and manufacturing railway vehicles. This paper analyzes the use conditions of double column deflection machine, and makes a contact nonlinear finite element analysis on various typical use conditions. The positions of parts subject to danger can be found out through the results of static strength analysis, which finds out the weaknesses and prejudges the failure trend of parts, and which provides guidance for prejudging the faults in actual production and can prevent occurrence of accidents.

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Zhang, Ao, Lei Zheng, Yong Mei, et al. "Simulation Analysis of the Structure of an Integrated Modular House by Flat Pack Based on the Elastic–Plastic Contact Theory and Experimental Study of Its Corner Fitting Joint." Buildings 14, no. 3 (2024): 635. http://dx.doi.org/10.3390/buildings14030635.

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Based on the elastic–plastic contact theory, elastic–plastic contact finite element models for the integrated modular house by flat pack are established. The structural stress and displacement distributions are obtained. An experimental test is conducted to study the performance of the corner fitting joint of the house. The finite element analysis and experimental test comprehensively demonstrated the safety and reliability of the house structure. The results show that the most unfavorable stress point of the house is located at the corner fitting joint. When the end plate connection holes of

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Cao, Sheng Yong, Bao Hua Zhang, and Ying Shi Sun. "Study on Failure Trend of Double Column Tri-Axis Deflection Machine Structure on Basis of Static Strength Analysis." Applied Mechanics and Materials 351-352 (August 2013): 975–79. http://dx.doi.org/10.4028/www.scientific.net/amm.351-352.975.

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To ensure the safe use of double column tri-axis deflection machine for processing and manufacturing railway vehicles. This paper analyzes the use conditions of double column tri-axis deflection machine, and makes a contact nonlinear finite element analysis on various typical use conditions. The positions of parts subject to danger can be found out through the results of static strength analysis, which finds out the weaknesses and prejudges the failure trend of parts, and which provides guidance for prejudging the faults in actual production and can prevent occurrence of accidents.

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Zhao, Jing, Edwin A. H. Vollebregt, and Cornelis W. Oosterlee. "EXTENDING THE BEM FOR ELASTIC CONTACT PROBLEMS BEYOND THE HALF-SPACE APPROACH." Mathematical Modelling and Analysis 21, no. 1 (2016): 119–41. http://dx.doi.org/10.3846/13926292.2016.1138418.

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The boundary element method (BEM) is widely used in fast numerical solvers for concentrated elastic contact problems arising from the wheel-rail contact in the railway industry. In this paper we extend the range of applicability of BEM by computing the influence coefficients (ICs) numerically. These ICs represent the Green’s function of the problem, i.e. the surface deformation due to unit loads. They are not analytically available when the half-space is invalid, for instance in conformal contact. An elastic model is proposed to compute these ICs numerically, by the finite element method (FEM)

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Shien, Ng Kok, Yusuf Iskandar Bin Azmi, and Nik Aslam Hafiz Bin Nik Omar. "Experimental and Numerical Study of Floating Stone Columns Using Unit Cell Model Test." E3S Web of Conferences 586 (2024): 03001. http://dx.doi.org/10.1051/e3sconf/202458603001.

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Stone columns serve as a remedial measure to alleviate settlements and expedite the consolidation process, particularly in soft soils where excessive settlement and slow consolidation are the common problems. This paper presents the experimental and numerical investigation into the effects of area replacement ratio and stone column length on the consolidation settlement of floating stone columns using finite element software i.e. PLAXIS 3D. The model setup adopted unit cell concept resembling an infinite column grid pattern with uniform load. The study examined two distinct area replacement ra

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Sun, Chun Hua, and Guang Qing Shang. "Effect of Traffic Flow on Characteristics of Piezoelectric Harvesting Unit." Applied Mechanics and Materials 672-674 (October 2014): 902–5. http://dx.doi.org/10.4028/www.scientific.net/amm.672-674.902.

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To protect dwindling coal and oil resources and open up a new way of renewable green energy, the technology of piezoelectric harvesting from pavement is proposed. Effect of traffic flow, including contact pressure and speed of a vehicle, on characteristics of a piezoelectric harvesting unit is discussed with the finite element method. Results show that the harvested electric power is approximately linear with the contact pressure and a vehicle’s speed. The contact pressure takes more effect on the harvested electric power and stress on pavement than the vehicle’s speed. A PHU of 280*280*20mm c

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Zhu, Jia Ning, Ke Jia Yang, Xiao Wen Li, and Rui Wen Li. "Finite Element Analysis on Crack Resistance Behavior of the Abnormal Joint of SRC Column and RC Beam." Applied Mechanics and Materials 351-352 (August 2013): 61–66. http://dx.doi.org/10.4028/www.scientific.net/amm.351-352.61.

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Based on the test of abnormal exterior joints of Steel Reinforced Concrete (SRC) column and Reinforced Concrete (RC) beam, the paper analyzed the influence on crack resistance behavior by ABAQUS, of the eccentricity of column section, the steel ratio of the joints zone, the concrete strength and the axial compression ratio and so on. The study indicates that the anti-crack capacity of the joints mainly depends on “the minor joint zone”. Based on the computing unit of minor joint core zone, the calculating formula of anti-crack capacity of the joints is deduced.

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Li, Ri Liang, Ya Feng Xu, and Shou Yan Bai. "The Element Analysis on Hysteretic Property of Cross Steel Reinforced Concrete Special-Shaped Column in Different Rates of Steel Bone." Applied Mechanics and Materials 351-352 (August 2013): 679–82. http://dx.doi.org/10.4028/www.scientific.net/amm.351-352.679.

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In this paper, we study the effect of rate of steel bone for the hysteretic property of cross steel reinforced concrete special-shaped column in the same horizontal cyclic load when they have the same axial compression ratio. We use the finite element analysis software ABAQUS to get the deformation pattern by establishing models of column, choosing the constitutive relation reasonably and determining the type of unit. We apply the data of simulation to draw the hysteretic curve and the skeleton curve, and then we analyze the hysteretic property by using the curve and the data. By contrast, it

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Masud, Mahadi, Hongbing Chen, Jiaji Wang, Jamshaid Sawab, Y. L. Mo, and Thomas T. C. Hsu. "High-fidelity finite element simulation of non-contact splices in column-drilled shaft connections." Engineering Structures 239 (July 2021): 112186. http://dx.doi.org/10.1016/j.engstruct.2021.112186.

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Moiseev, Viktor, Eugenia Manoilo, Oleg Khukhryanskiy, and Kalif Repko. "Experimental research of mass transfer in a stabilized foam layer." ScienceRise, no. 5 (October 29, 2021): 14–22. https://doi.org/10.21303/2313-8416.2021.002123.

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The object of research: mass transfer processes on a combined contact element in a column apparatus. Investigated problem: determination of the regularities of process parameters in the processing of gas-liquid systems in a foam layer, as well as to interpret the obtained experimental data. The problem of processing industrial gas flows is solved by conducting the process in an intensive mode. The main scientific results: as a result of the study, the regularities of ammonia absorption were revealed depending on the main parameters of the experiment: gas velocity in the column cross-section, a

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Seneviratne, L. D., S. W. E. Earles, and D. N. Fenner. "Analysis of a Four-Bar Mechanism with a Radially Compliant Clearance Joint." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 210, no. 3 (1996): 215–23. http://dx.doi.org/10.1243/pime_proc_1996_210_191_02.

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Clearance joints in high-speed mechanisms can suffer from contact loss, leading to noise generation and joint deterioration. To predict the onset of contact loss detailed modelling of the joint is required. In this paper a clearance joint is modelled using a combined massless link and spring-damper unit, where the bearing stiffness (spring element) is estimated from a three-dimensional finite element analysis. The combined model is shown to exhibit chaotic behaviour just prior to contact loss and the predictions correlate well with experimental results. The bearing stiffness and damping are sh

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Liu, Hong Bo, Long Jun Xu, Shuang Li, and Yong Song Shao. "Finite Element Fracture Mechanics Study of Web Connections with Tapered Beam Flange Plates." Key Engineering Materials 452-453 (November 2010): 473–76. http://dx.doi.org/10.4028/www.scientific.net/kem.452-453.473.

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Brittle fracture was identified in many of prequalified weld joints in steel moment frames in the 1994 Nothridge earthquake. Then analyses of response and damage mechanism of beam-to-column connections under seismic load were widely studied in the world, but few people conduct the research on seismic-resistant behavior of beam-to-column web connections. To quantify the variation of stress intensity factor to weld root flaw sizes beam-to-column web connections with tapered beam flange plates, detailed 3D finite element analyses is used to study fracture toughness requirements in beam-to-column

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Gaber, Maryam, Anuar Kasa, Norinah Abdul Rahman, and Jamal Alsharef. "Comparison between unit cell and plane strain models of stone column ground improvement." International Journal of Engineering & Technology 7, no. 2 (2018): 263. http://dx.doi.org/10.14419/ijet.v7i2.8797.

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This article presents a comparative study of the behaviour of clayey soil reinforcements using stone column ground improvement by means of numerical analyses. Two-dimensional finite element analyses with commercially available software, PLAXIS, were performed on end-bearing stone columns using 15-noded triangular elements to investigate the impact of the modelling type on the stress concentration ratio and failure mechanism of an improved foundation system. Consolidation analyses were conducted throughout the study using Mohr-Coulomb’s criterion. The computed values of the stress concentration

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Fu, Yongling, Zeqi Wang, and Wanguo Li. "Fractal Dimension Fitting of Virtual Material and Experimental Verification." Journal of Physics: Conference Series 2338, no. 1 (2022): 012026. http://dx.doi.org/10.1088/1742-6596/2338/1/012026.

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Abstract Virtual material is a dynamic model of mechanical contact surface, which is suitable for finite element simulation. This method can characterize the stiffness and damping of the contact surface well by using fractal geometry theory to describe the contour of the contact surface. Based on standard W-M function, we verify the accuracy of the fractal dimension calculated by wavelet transform, and then fit the fractal dimension of machined surfaces with different roughness. Using the fractal dimension, we calculate the virtual material parameters to establish the finite element model of t

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49

Moiseev, Viktor, Eugenia Manoilo, Oleg Khukhryanskiy, and Kalif Repko. "Experimental research of mass transfer in a stabilized foam layer." ScienceRise, no. 5 (October 29, 2021): 14–22. http://dx.doi.org/10.21303/2313-8416.2021.002123.

Full text

Abstract:

The object of research: mass transfer processes on a combined contact element in a column apparatus. Investigated problem: determination of the regularities of process parameters in the processing of gas-liquid systems in a foam layer, as well as to interpret the obtained experimental data. The problem of processing industrial gas flows is solved by conducting the process in an intensive mode. The main scientific results: as a result of the study, the regularities of ammonia absorption were revealed depending on the main parameters of the experiment: gas velocity in the column cros

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50

S. V., Sivapriya, Jijo James, K. Pavithra, S. Renuka Devi, K. Sangeetha, and M. Sasikala. "Comparison of Encased Stone Column with Conventional Column for Varied Parameters through Experimental and Numerical Investigations." Advances in Civil Engineering 2023 (September 6, 2023): 1–9. http://dx.doi.org/10.1155/2023/7564756.

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Installation of stone columns is a widely used stabilization method in improving the characteristics of soft clays. In this study, laboratory tests were conducted to understand the influence of column number, spacing and encasement on the load-carrying capacity of the modified soil. Unit cell concept is adopted for column diameters of 25.4 and 31.75 mm, one and two numbers of columns and spacings of 50, 70, and 90 mm under the conditions of with and without encasement. In addition to the laboratory study, finite element analysis was also done for similar parameters to understand the modified s

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