Relevant bibliographies by topics / 3D finite element

Academic literature on the topic '3D finite element'

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Published: 4 June 2021
Last updated: 21 February 2023

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Journal articles on the topic "3D finite element"

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Chekmarev, Dmitry, and Yasser Abu Dawwas. "Momentary finite element for elasticity 3D problems." MATEC Web of Conferences 362 (2022): 01006. http://dx.doi.org/10.1051/matecconf/202236201006.

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A description of a new 8-node finite element in the form of a hexahedron is given for solving elasticity 3D problems. This finite element has the following features. This is a linear approximation of functions in the element, one point of integration and taking into account the moments of forces in the element. The finite element is based on “rare mesh” FEM schemes—finite element schemes in the form of n-dimensional cubes (square, cube, etc.) with templates in the form of inscribed simplexes (triangle, tetrahedron, etc.). Among the rare mesh schemes, schemes in 3-dimensional and 7-dimensional spaces are successful, in which the simplex can be arranged symmetrically with respect to the center of the n-dimensional cube. The rare mesh FEM schemes have not the hourglass instability due to the fact that the template of the finite element operator has the form of a simplex. Compared to traditional linear finite elements in the form of a simplex, rare mesh schemes are more economical and converge better, since they do not have the effect of overestimated shear stiffness. Moment FEM schemes are constructed by rare mesh schemes higher dimensional projection, respectively, on a two-dimensional or three-dimensional finite element mesh. The resulting finite elements are close to the known polylinear elements and surpass them in efficiency. The schemes contain parameters that allow you to control the convergence of numerical solutions. The possibility of applying this approach to the construction of numerical schemes for solving other problems of mathematical physics is discussed.
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Silva, L., C. Gruau, J. F. Agassant, T. Coupez, and J. Mauffrey. "Advanced Finite Element 3D Injection Molding." International Polymer Processing 20, no. 3 (September 2005): 265–73. http://dx.doi.org/10.3139/217.1888.

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Berry, K. J. "Parametric 3D finite-element mesh generation." Computers & Structures 33, no. 4 (January 1989): 969–76. http://dx.doi.org/10.1016/0045-7949(89)90431-8.

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Kadhim, Kadhim Naief. "Finite Element Analysis of Cellular Cofferdam by Using Flow 3D Program." Journal of Advanced Research in Dynamical and Control Systems 12, SP4 (March 31, 2020): 348–54. http://dx.doi.org/10.5373/jardcs/v12sp4/20201498.

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Warad, Nilesh, Janardhan Rao, Kedar Kulkarni, Avinash Dandekar, Manoj Salgar, and Malhar Kulkarni. "Finite Element Analysis Methodology for Additive Manufactured Tooling Components." International Journal of Engineering and Technology 14, no. 4 (November 2022): 56–61. http://dx.doi.org/10.7763/ijet.2022.v14.1202.

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Fused deposition modeling (FDM) for additive manufacturing is constantly growing as an innovative process across the industry in areas of prototyping, tooling, and production parts across most manufacturing industry verticals such as Aerospace, Automotive, Agricultural, Healthcare, etc. One such application that is widely used is for tooling on the shop floor e.g. for pick-off tools, assembly fixtures etc. For tooling applications printing the solid fill component with +45/- 45 raster is common practice. There is a requirement for finite element analysis to validate the strength of 3D printed components for some specific applications in tooling, but due to the anisotropic behavior of 3D printed parts and the unavailability of all mechanical properties FE analysis of 3D printed parts is sometimes challenging. Advance approaches like multiscale modeling approach requires specialized & costly analytical tools. So, to understand the behavior of additively manufactured parts the team has conducted a few tests and compared the results. In this work, solid-filled dog-bone tensile test and three-point bending test specimens were printed with +45/-45 raster orientation and tested in the lab. Tensile test specimens were built with flat, on-edge, and up-right orientations and tested to determine the directional properties of young’s modulus. Using mechanical properties from the tension test 3 points bending test is simulated in FE software- ANSYS. The FE modeling was done in two ways, in first model orthotropic properties were assigned to the specimen, and for second model isotropic properties were assigned. For isotropic modeling least value of young’s modulus is used. Simulation results of three-point bending test shows that in the linear region of force-deflection curve, deformation values from FE model with both orthotropic and isotropic modeling are in good agreement with the experimental results. Also, the difference in stress results between isotropic and orthotropic FE model is almost negligible. To support this observation, study is performed for various conditions. The specimens were printed with ABS material on Ultimaker® and ASA material on Stratasys® Fortus 360mc™ machine with T12, T16 and T20 nozzle settings. Study shows, for tooling applications if the 3D printed solid-filled components are designed with a certain factor of safety then validating its strength with isotropic material properties will give acceptable results. The advantage of this approach is getting the isotropic mechanical properties is easy and modeling with FE modeling will be simple.
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Peng, Rui Tao, Fang Lu, Xin Zi Tang, and Yuan Qiang Tan. "3D Finite Element Analysis of Prestressed Cutting." Advanced Materials Research 591-593 (November 2012): 766–70. http://dx.doi.org/10.4028/www.scientific.net/amr.591-593.766.

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In order to reveal the adjustment principle of prestressed cutting on the residual stress of hardened bearing steel GCr15, a three-dimensional thermal elastic-viscoplastic finite element model was developed using an Arbitrary Lagrangian Eulerian (ALE) formulation. Several key simulation techniques including the material constitutive model, constitutive damage law and contact with friction were discussed, simulation of chip formation during prestressed cutting was successfully conducted. At the prestresses of 0 MPa, 341 MPa and 568 MPa, distributions of residual stress on machined surface were simulated and experimentally verified. The results indicated that residual compressive stress on machined surface were achieved and actively adjusted by utilizing the prestressed cutting method; meanwhile, within the elastic limit of bearing steel material, the higher applied prestress leads to the more prominent compressive residual stress in the surface layer and subsequently the higher fatigue resistance of the part.
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Couturier, G., Claire Maurice, R. Fortunier, R. Doherty, and Julian H. Driver. "Finite Element Simulations of 3D Zener Pinning." Materials Science Forum 467-470 (October 2004): 1009–18. http://dx.doi.org/10.4028/www.scientific.net/msf.467-470.1009.

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An original model, based on a variational formulation for boundary motion by viscous drag, is developed to simulate single grain boundary motion and its interaction with particles. The equations are solved by a 3D finite element method to obtain the instantaneous velocity at each triangular element on the boundary surface, before, during and after contact with one or more particles. After validation by comparison with some simple, analytical and numerical cases, it is adapted to model curvature driven grain growth. For single phase material, the single grain boundary model closely matches the grain coarsening kinetics of a 3D multi boundary vertex model. In the presence of spherical incoherent particles the growth rate slows down to give a growth exponent of 2.5. When the boundary is anchored there is a significantly higher density, by a factor of 4, of particles on the boundary than the density predicted by the classic Zener analysis, and many particles exert less than this Zener drag force. As a result the Zener drag is increased by a factor of about 2.2. The limiting grain radius is compared with some experimental results.
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Sun, Da Wei, Kang Ping Wang, and Hui Qin Yao. "3D Finite Element Analysis on DongQing CFRD." Advanced Materials Research 255-260 (May 2011): 3478–81. http://dx.doi.org/10.4028/www.scientific.net/amr.255-260.3478.

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As a competitive dam style and full of life-force, the concrete- faced rockfill dam (CFRD) is widely used in China in recent years. Experts in China pointed out that “Extra high CFRD generally means those CFRDs with their heights higher than 150 m ” However, the history of construction and design of extra high CFRD is short and some problems during the construction of Extra high CFRD is still need to be explored. Therefore, stress and deformation characteristic of DongQing extra high CFRD was analyzed by 3D finite element method and some beneficial reference was obtained. Firstly, the advanced 3D mesh generation procedure written by Fortran language was used to form the finite element mesh which contained not only the dam with large amount of vertical joins and perimeric joints, but also the rock foundation and surrounding mountains. Moreover, the layer by layer construction procedure of dam was detail considered during 3D mesh generation. Since the node number of 3D mesh is still larger, large scales equations solving method-element by element method and others efficient measures were adopted. As the results, the computer calculation time decreased from former 48 hours to 20 minutes. According to the calculation results, the design scheme of DongQing CFRD was finally optimized.
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Yue, Cai Xu, Xian Li Liu, Dong Kai Jia, Shu Yi Ji, and Yuan Sheng Zhai. "3D Finite Element Simulation of Hard Turning." Advanced Materials Research 69-70 (May 2009): 11–15. http://dx.doi.org/10.4028/www.scientific.net/amr.69-70.11.

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A 3D model is established in this paper to simulate cutting process of PCBN tool cylindrical cutting hardened steel GCr15 using ABAQUS/Explicit. The model effectively overcomes serious element distortions and cell singularity in high strain domain caused by material large deformation by adopting shear failure criteria and element deletion criteria. In this study cutting force, cutting temperature, surface residual stress field as well as side flow are forecasted of hard cutting process with chamfering tool preparation. It shows that satisfactory results could be obtained by FEM. The simulation results provide theoretical basis for studying hard cutting mechanism and selecting the best cutting condition in practical.
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Mininger, X., N. Galopin, Y. Dennemont, and F. Bouillault. "3D finite element model for magnetoelectric sensors." European Physical Journal Applied Physics 52, no. 2 (October 21, 2010): 23303. http://dx.doi.org/10.1051/epjap/2010078.

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Dissertations / Theses on the topic "3D finite element"

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KATRAGADDA, SRIRAMAPRASAD. "FINITE ELEMENT ANALYSIS OF 3D CONTACT PROBLEMS." University of Cincinnati / OhioLINK, 2005. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1123812018.

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Xuefang, Zhao. "3D Finite Element Modeling of the Lower Limb." Thesis, Tekniska Högskolan, Högskolan i Jönköping, JTH, Produktutveckling, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-31013.

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This thesis project provides a method to simulate the internal mechanical properties of the undeformed human lower limb when an external force is applied. The value of the external force is determined by the deformed magnetic resonance imaging (MRI) images, which is converted into displacement instead. The purpose is to predict the area of the lower limb that is at most risk of wounds. The tissues of the human lower limb that are concerned in this study are: skin, fat, muscle, fascia, tibia bone, fibula bone and bone marrow. MRI images taken of an undeformed lower limb from experimental people is used to create a three-dimensional finite element model. During the simulation, the finite element model considers the nonlinear behaviors of individual soft tissues instead of lumping them together. Simulation results are presented as a curve of the external force and deformation of the different types of lower limb tissues and it shows the stress distribution in the lower limb.
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Ljungberg, Björn. "3D Finite Element Modelling of ICRH in JET." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-253263.

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This master's thesis assesses the possibility of using the nite element method to solve the electromagneticwave equation in a fusion plasma in 3D. In particular, the frequency is chosen to match that of ioncyclotron resonance heating in the fusion experiment JET. In this work, a brief introduction on fusion isgiven, followed by an explanation of the damping process in a plasma. A projection of the 3D wave eldonto a poloidal plane is compared to the 2D wave eld produced by the code FEMIC for validation ofthe developed 3D code. The comparison was done with good results.The power spectrum and coupling resistance per toroidal mode obtained from the 3D model arealso compared to the corresponding quantities obtained from an analytical slab model. Though somediscrepancies can be seen near the toroidal mode number n = 0 and for higher mode numbers (jnj > 70),the appearance of the power spectra are similar. The dierence near n = 0 is attributed to inducedcurrents in the reactor wall, whereas for higher mode numbers, the dierence is likely due to bad resolution.The induced currents in the wall causes singularities in the chosen model of the coupling resistance. Thisproduces unreliable predictions of the coupling resistance.
Denna masteruppsats utvärderar möjligheten att använda finita elementmetoden till att lösa den elektro-magnetiska vågekvationen i ett fusionsplasma i 3D. Speciellt väljs frekvensen för att matcha frekvensen för uppvärmning genom joncyklotronresonans i fusionsexperimentet JET. I detta arbete ges en översiktlig introduktion till fusion, åtföljd av en förklaring av dämpningsprocessen i ett plasma. En projektion av 3D-vågfältet på ett poloidalt plan jämförs med 2D-vågfältet producerat av 2D-koden FEMIC för att validera den utvecklade 3D-koden. Jämförelsen gjordes med gott resultat.| |Effektspektrumet och kopplingsresistansen per toroidal mod från 3D-modellen jämförs också med motsvarande storheter från en analytisk 1D-modell. Trots att vissa skillnader kan ses nära det toroidala modtalet n = 0 och för högre modtal ( n > 70), är utseendet på effektspektrumen lika. Skillnaden nära n = 0 tillskrivs de inducerade strömmarna i reaktorväggen, medan för högre modtal beror skillnaden troligen på dålig upplösning. De inducerade strömmarna i väggen ger upphov till singulariteter i den valda modellen för kopplingsresistansen. Det resulterar i otillförlitliga värden tansen.
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Hart, Andrew. "3D finite element computer modelling of the human patella." Thesis, Teesside University, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.410836.

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Fan, Yuanji. "3D Finite Element Analysis of a Hybrid Stepper Motor." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-278496.

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Hybrid stepper motors are being applied to more and more industrial regionsdue to their low cost compared with servo motors and prominent performance.Many industrial applications require accurate and eective methods for predictinga motor’s performance at the design stage. The geometry of the motorsis complicated and the magnetic saturation eect is also serious, giving riseto the diculty of understanding the transient behavior of the motors. Furthermore,the drive circuit and control algorithm are more sophisticated thanthose of traditional AC or DC motors. Lastly, the losses of the motors createthe rising of temperature, while the thermal eect and dynamic performanceaect each other.All these factors can be solved by simulating a hybrid stepper motor witha model combining the eect of electromagnetic field, control algorithm, andmotor loss together. In this thesis, a three-dimension (3D) finite elementmodel is developed in the software Maxwell for studying motor characteristics.The electromagnetic field is analyzed in a static state. The simulatedback electromagnetic force is verified by experiments. The feasibility of fullstepcontrol algorithm is analyzed. The vector control algorithm is applied tothe model through co-simulation of Simulink and Maxwell in Simplorer. The3D model is proved to be unrealistic for co-simulation. In the end, this thesissummarizes the modeling experience and gives recommendations on thetransient simulation of the motor.
Hybridstegsmotorer appliceras i fler ochfler industriapplikationer tack vare deras låga kostnad och förbättrad prestanda jämfört med servomotorer. Många branschapplikationer kräver exakta och effektiva metoder för att förutsäga motorns prestanda redan i konstruktionsstadiet. Motorns geometri är komplicerad och den magnetiska mättnadseffekten är också betydande, vilket försvårar modelleringen. Dessutom är drivkretsen och styralgoritmen mer sofistikerad än den för traditionella växeleller likströmsmotorer. Vidare så resulterar motorns förluster i temperaturökningar vilka påverkar dynamiska.Alla dessa faktorer kan studeras genom att simulera hybrida stegmotorer med en modell som kombinerar effekten av elektromagnetiskt fält, kontrollalgoritm och motorförluster tillsammans. I detta examensarbete utvecklas en tredimensionell finit elementmodell i programvaran Maxwell för att studera motorns elektromagnetiska egenskaper. Det elektromagnetiska fältet analyseras i ett statiskt tillstånd. Den beräknade mot-EMK:n har verifieras genom experiment. Vektorkontrollalgoritmen tillämpas på modellen genom samsimulering i Simulink och Maxwell i Simplorer. Den tredimensionella modellen visade sig vara orealistisk för samsimulering. Till sist summeras uppnådaerfarenheter och rekommendationer för fortsatt arbete ges.
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Ahsan, Nabeel. "OCTG Premium Threaded Connection 3D Parametric Finite Element Model." Thesis, Virginia Tech, 2016. http://hdl.handle.net/10919/71791.

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Full 360 degree 3D finite element models are the most complete representation of Oil Country Tubular Goods (OCTG) premium threaded connections. Full 3D models can represent helical threads and boundary conditions required to simulate make-up and service loading. A methodology is developed to create a 360 degree full 3D parametric finite element model with helical threads as an effective design and analysis tool. The approach is demonstrated with the creation of a metal-to-metal seal integral joint full 3D model with manufacturer supplied geometry. The premium connection is decomposed into smaller parts to generate parametric geometric features. A controlled parametric meshing scheme is developed to manage mesh density in contact regions to effectively represent the mechanics in regions of interest while minimizing total element count. The scripted parametric approach allows for efficient geometric and mesh updates. Several methods to reduce and manage model runtimes are presented. An elastic-plastic material model is created with material coupon tensile tests results. Digital Image Correlation (DIC) is used to measure full-field displacement and strain data on the surface of the box. Experimental set up and data processing procedures are discussed. Error metrics are developed to correlate the finite element model results with the DIC experimental data. The DIC make-up experimental results are used to reconcile the finite element model to develop a minimum error make-up model relative to the pin rotation. The friction coefficient is estimated and the make-up torque-turn behavior is verified. The calibrated 3D finite element model is validated with ISO_13769 load series B axial and internal pressure loading experimental DIC data. Metal-to-metal seal metrics of contact pressure and seal length are evaluated.
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Palani, Vijayakumar Bahr Behnam. "Finite element simulation of 3D drilling in unidirectional CFRP composite." Diss., Click here for available full-text of this thesis, 2006. http://library.wichita.edu/digitallibrary/etd/2006/t079.pdf.

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Thesis (M.S.)--Wichita State University, Dept. of Mechanical Engineering.
"May 2006." Title from PDF title page (viewed on October 29, 2006). Thesis adviser: Behnam Bahr. Includes bibliographic references (leaves 85-89).
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Pester, Matthias. "Visualization Tools for 2D and 3D Finite Element Programs - User's Manual." Universitätsbibliothek Chemnitz, 2006. http://nbn-resolving.de/urn:nbn:de:swb:ch1-200600436.

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This paper deals with the visualization of numerical results as a very convenient method to understand and evaluate a solution which has been calculated as a set of millions of numerical values. One of the central research fields of the Chemnitz SFB 393 is the analysis of parallel numerical algorithms for large systems of linear equations arising from differential equations (e.g. in solid and fluid mechanics). Solving large problems on massively parallel computers makes it more and more impossible to store numerical data from the distributed memory of the parallel computer to the disk for later postprocessing. However, the developer of algorithms is interested in an on-line response of his algorithms. Both visual and numerical response of the running program may be evaluated by the user for a decision how to switch or adjust interactively certain parameters that may influence the solution process. The paper gives a survey of current programmer and user interfaces that are used in our various 2D and 3D parallel finite element programs for the visualization of the solution.
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SOUSA, RAFAEL ARAUJO DE. "GEOMETRIC AND NUMERICAL ADAPTATIVITY OF 2D AND 3D FINITE ELEMENT MESHES." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2007. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=10376@1.

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COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR
TECNOLOGIA EM COMPUTAÇÃO GRÁFICA
Este trabalho apresenta uma metodologia para geração de malhas adaptativas de elementos finitos 2D e 3D usando modeladores geométricos com multi-regiões e superfícies paramétricas. A estratégia adaptativa adotada é fundamentada no refinamento independente das curvas, superfícies e sólidos. Inicialmente as curvas são refinadas, no seu espaço paramétrico, usando uma técnica de partição binária da curva (binary-tree). A discretização das curvas é usada como dado de entrada para o refinamento das superfícies. A discretização destas é realizada no seu espaço paramétrico e utiliza uma técnica de avanço de fronteira combinada com uma estrutura de dados do tipo quadtree para gerar uma malha não estruturada de superfície. Essas malhas de superfícies são usadas como dado de entrada para o refinamento dos domínios volumétricos. A discretização volumétrica combina uma estrutura de dados do tipo octree juntamente com a técnica de avanço de fronteira para gerar uma malha sólida não estruturada de elementos tetraédricos. As estruturas de dados auxiliares dos tipos binary-tree, quadtree e octree são utilizadas para armazenar os tamanhos característicos dos elementos gerados no refinamento das curvas, superfícies e regiões volumétricas. Estes tamanhos característicos são definidos pela estimativa de erro numérico associado à malha global do passo anterior do processo adaptativo. A estratégia adaptativa é implementada em dois modeladores: o MTOOL (2D) e o MG (3D), que são responsáveis pela criação de um modelo geométrico, podendo ter, multi-regiões, onde no caso 3D as curvas e superfícies são representadas por NURBS.
This work presents a methodology for adaptive generation of 2D and 3D finite-element meshes using geometric modeling with multi- regions and parametric surfaces. The adaptive strategy adopted in this methodology is based on independent refinements of curves, surfaces and solids. Initially, the model´s curves are refined using a binary-partition algorithm in parametric space. The discratizetion of these curves is used as input for the refinement of adjacent surfaces. Surface discretization is also performed in parametric space and employs a quadtree-based refinement coupled to an advancing-front technique for the generation of an unstructured triangulation. These surface meshes are used as input for the refinement adjacent volumetric domains. Volume discretization combines an octree refinement with an advancing-front technique to generate an unstructural mesh of tetrahedral elements. In all stages of the adaptive strategy, the refinement of curves, surface meshes and solid meshes is based on estimated numerical errors associated to the mesh of the previous step in the adaptive process. In addition, curve and surface refinement takes into account metric distortions between parametric and Cartesian spaces and high curvatures of the model´s geometric entities. The adaptive strategies are implemented in two different modelers: MTOOL (2D) and MG (3D), which are responsible for the creation of a geometric model with multi-regions, where for case 3D the curves and surfaces are represented by NURBS, and for the interactive and automatic finite-element mesh generation associated to surfaces and solid regions. Numerical examples of the simulation of engineering problems are presented in order to validate the methodology proposed in this work.
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Gao, Sasa. "Development of a new 3D beam finite element with deformable section." Thesis, Lyon, 2017. http://www.theses.fr/2017LYSEI026/document.

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Le nouvel élément de poutre est une évolution d'un élément de Timoshenko poutre avec un nœud supplémentaire situé à mi-longueur. Ce nœud supplémentaire permet l'introduction de trois composantes supplémentaires de contrainte afin que la loi constitutionnelle 3D complète puisse être utilisée directement. L'élément proposé a été introduit dans un code d'éléments finis dans Matlab et une série d'exemples de linéaires/petites contraintes ont été réalisées et les résultats sont systématiquement comparés avec les valeurs correspondantes des simulations ABAQUS/Standard 3D. Ensuite, la deuxième étape consiste à introduire le comportement orthotrope et à effectuer la validation de déplacements larges / petites contraintes basés sur la formulation Lagrangienne mise à jour. Une série d'analyses numériques est réalisée qui montre que l'élément 3D amélioré fournit une excellente performance numérique. En effet, l'objectif final est d'utiliser les nouveaux éléments de poutre 3D pour modéliser des fils dans une préforme composite textile. A cet effet, la troisième étape consiste à introduire un comportement de contact et à effectuer la validation pour un nouveau contact entre 3D poutres à section rectangulaire. La formulation de contact est dérivée sur la base de formulation de pénalité et de formulation Lagrangian mise à jour utilisant des fonctions de forme physique avec l'effet de cisaillement inclus. Un algorithme de recherche de contact efficace, qui est nécessaire pour déterminer un ensemble actif pour le traitement de contribution de contact, est élaboré. Et une linéarisation constante de la contribution de contact est dérivée et exprimée sous forme de matrice appropriée, qui est facile à utiliser dans l'approximation FEM. Enfin, on présente quelques exemples numériques qui ne sont que des analyses qualitatives du contact et de la vérification de l'exactitude et de l'efficacité de l'élément de 3D poutre proposé
The new beam element is an evolution of a two nodes Timoshenko beam element with an extra node located at mid-length. That extra node allows the introduction of three extra strain components so that full 3D stress/strain constitutive relations can be used directly. The second step is to introduce the orthotropic behavior and carry out validation for large displacements/small strains based on Updated Lagrangian Formulation. A series of numerical analyses are carried out which shows that the enhanced 3D element provides an excellent numerical performance. Indeed, the final goal is to use the new 3D beam elements to model yarns in a textile composite preform. For this purpose, the third step is introducing contact behavior and carrying out validation for new 3D beam to beam contact with rectangular cross section. The contact formulation is derived on the basis of Penalty Formulation and Updated Lagrangian formulation using physical shape functions with shear effect included. An effective contact search algorithm is elaborated. And a consistent linearization of contact contribution is derived and expressed in suitable matrix form, which is easy to use in FEM approximation. Finally, some numerical examples are presented which are only qualitative analysis of contact and checking the correctness and the effectiveness of the proposed 3D beam element
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Books on the topic "3D finite element"

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Bliem, C. 3D Finite Element Berechnungen im Tunnelbau: 3D finite element calculations in tunnelling. Berlin: Logos, 2001.

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Belytschko, Ted. WHAMS-3D: An explicit 3D finite element program. Willow Springs, Ill: KBS2, 1988.

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Farahani, Ali Reza Vashghani. 3D finite element time domain methods. Ottawa: National Library of Canada, 2003.

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Nelson, Sadowski, ed. Magnetic materials and 3D finite element modeling. Boca Raton: CRC Press, 2014.

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Sifakis, Eftychios, and Jernej Barbič. Finite Element Method Simulation of 3D Deformable Solids. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-031-02585-3.

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Chatterjee, A. Edge-based finite elements and vector ABCS applied to 3D scattering. Ann Arbor, Mich: University of Michigan, Radiation Laboratory, Dept. of Electrical Engineering and Computer Science, 1992.

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Chatterjee, A. Edge-based finite elements and vector ABCS applied to 3D scattering. Ann Arbor, Mich: University of Michigan, Radiation Laboratory, Dept. of Electrical Engineering and Computer Science, 1992.

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Shepherd, K. G. 2D and 3D finite element analysis of unsupported deep excavations. Manchester: UMIST, 1997.

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McInerney, Timothy John. Finite element techniques for fitting deformable models to 3D data. Ottawa: National Library of Canada = Bibliothèque nationale du Canada, 1993.

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McInerney, Timothy John. Finite element techniques for fitting deformable models to 3D data. Toronto: University of Toronto, Dept. of Computer Science, 1992.

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Book chapters on the topic "3D finite element"

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Lyu, Yongtao. "Finite Element Analysis Using 3D Elements." In Finite Element Method, 159–69. Singapore: Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-3363-9_7.

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Pidaparti, Ramana M. "3D Finite Element Analysis." In Engineering Finite Element Analysis, 199–244. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-031-79570-1_8.

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Ferreira, Antonio J. M., and Nicholas Fantuzzi. "Bernoulli 3D Frames." In MATLAB Codes for Finite Element Analysis, 123–39. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-47952-7_8.

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Ferreira, Antonio J. M., and Nicholas Fantuzzi. "Trusses in 3D Space." In MATLAB Codes for Finite Element Analysis, 77–88. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-47952-7_5.

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Neto, Maria Augusta, Ana Amaro, Luis Roseiro, José Cirne, and Rogério Leal. "Finite Element Method for 3D Solids." In Engineering Computation of Structures: The Finite Element Method, 233–63. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-17710-6_7.

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Strbac, Vukasin, Jos Vander Sloten, and Nele Famaey. "Intraoperative 3D Finite Element Computation Using CUDA." In IFMBE Proceedings, 371–74. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-11128-5_93.

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Amor, Hanen, Marc Bourgeois, and Gregory Mathieu. "Benchmark 3D: a linear finite element solver." In Finite Volumes for Complex Applications VI Problems & Perspectives, 931–35. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-20671-9_90.

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Liu, Rui, and Tieping Li. "3D Finite Element Analysis for Outlet Nozzle." In Proceedings of The 20th Pacific Basin Nuclear Conference, 3–11. Singapore: Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-2311-8_1.

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Oñate, Eugenio. "3D Composite Beams." In Structural Analysis with the Finite Element Method Linear Statics, 150–232. Dordrecht: Springer Netherlands, 2013. http://dx.doi.org/10.1007/978-1-4020-8743-1_4.

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Bercovier, M. "An Optimal 3D Finite Element for Incompressible Media." In Finite Element Methods for Nonlinear Problems, 791–801. Berlin, Heidelberg: Springer Berlin Heidelberg, 1986. http://dx.doi.org/10.1007/978-3-642-82704-4_43.

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Conference papers on the topic "3D finite element"

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Nikulin, O., T. Nakonechna, and N. Barabash. "2D AND 3D FINITE ELEMENT LOCALIZATION." In SPECIALIZED AND MULTIDISCIPLINARY SCIENTIFIC RESEARCHES. European Scientific Platform, 2020. http://dx.doi.org/10.36074/11.12.2020.v3.05.

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Addessi, D., P. Di Re, C. Gatta, and E. Sacco. "Multiscale finite element modeling linking shell elements to 3D continuum." In 8th European Congress on Computational Methods in Applied Sciences and Engineering. CIMNE, 2022. http://dx.doi.org/10.23967/eccomas.2022.190.

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Richard, Audrey, Christoph Vogel, Maros Blaha, Thomas Pock, and Konrad Schindler. "Semantic 3D Reconstruction with Finite Element Bases." In British Machine Vision Conference 2017. British Machine Vision Association, 2017. http://dx.doi.org/10.5244/c.31.98.

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Nelson, Eric M. "High accuracy 3D electromagnetic finite element analysis." In Computational accelerator physics. AIP, 1997. http://dx.doi.org/10.1063/1.52390.

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Cavaliere, M. A., Tomas Turkalj, and E. H. Giroldo. "3D FINITE ELEMENT ANALYSIS OF TUBE EXPANSION." In 10th World Congress on Computational Mechanics. São Paulo: Editora Edgard Blücher, 2014. http://dx.doi.org/10.5151/meceng-wccm2012-18570.

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Kalisperakis, I., C. Stentoumis, L. Grammatikopoulos, M. E. Dasiou, and I. N. Psycharis. "Precise 3D recording for finite element analysis." In 2015 Digital Heritage. IEEE, 2015. http://dx.doi.org/10.1109/digitalheritage.2015.7419467.

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Lu, H. H., L. M. Xu, M. D. Fredlund, and D. G. Fredlund. "3D Shear Strength Reduction Finite Element Analysis." In 18th Southeast Asian Geotechnical Conference (18SEAGC) & Inaugural AGSSEA Conference (1AGSSEA). Singapore: Research Publishing Services, 2013. http://dx.doi.org/10.3850/978-981-07-4948-4_109.

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Madhavan, V., L. Olovsson, S. C. Swargam, and R. Agarwal. "Eulerian Finite Element Analysis of 3D Machining." In ASME 1999 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1999. http://dx.doi.org/10.1115/imece1999-1225.

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Abstract We describe here the development and testing of a capability for finite element simulation of practical machining operations such as turning and milling, using 3D multi-material, explicit dynamic, Eulerian finite element analysis. In these simulations the workpiece material and the air surrounding it are modeled using Eulerian finite elements and the flow of the workpiece material into the air as a result of the action of the Lagrangian tool can be freely tracked. Tension tests and Taylor impact tests are simulated using the traditional Lagrangian approach as well as the Eulerian approach. Comparison of the results is used to understand the factors affecting the solution accuracy. Simulations of orthogonal machining using this technique show that the side flow of the chip is simulated realistically. Simulations of oblique machining with various rake and inclination angles confirm that the chip flow angle is independent of the rake angle. Inertial effects cause the chip flow angle to differ from the inclination angle as the weight of the chip increases. Simulations of turning and end milling show that chip formation and flow can be simulated ab-initio. The simulation capability described here can provide accurate results for various outputs of interest and is also computationally efficient, allowing a typical analysis to be completed within a day.
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Schmidt*, Laura Maria, Zhengyong Ren, Thomas Kalscheuer, and Gunilla Kreiss. "3D Boundary Conditions in 3D Finite-Element Electromagnetic Forward Modelling." In GEM 2019 Xi'an: International Workshop and Gravity, Electrical & Magnetic Methods and their Applications, Chenghu, China, 19-22 April 2015. Society of Exploration Geophysicists and Chinese Geophysical Society, 2019. http://dx.doi.org/10.1190/gem2019-034.1.

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Li, Rui, and Albert J. Shih. "Finite Element Modeling of 3D Turning of Titanium." In ASME 2004 International Mechanical Engineering Congress and Exposition. ASMEDC, 2004. http://dx.doi.org/10.1115/imece2004-60882.

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The finite element modeling and experimental validation of 3D turning of grade two commercially pure titanium are presented. The Third Wave AdvantEdge machining simulation software is applied for the finite element modeling. Machining experiments are conducted. The measured cutting forces and chip thickness are compared to finite element modeling results with good agreement. The effects of cutting speed, a limiting factor for productivity in titanium machining, depth of cut, and tool cutting edge radius on the peak tool temperature are investigated. This study also explores the use of 3D finite element modeling to study the chip curl. Reasonable agreement was observed under turning with small depth of cut. Results of this research help to guide the design of new cutting tool materials and coatings and the studies of chip formation to further advance the productivity of titanium machining.
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Reports on the topic "3D finite element"

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Jiang, W., and Benjamin W. Spencer. Modeling 3D PCMI using the Extended Finite Element Method with higher order elements. Office of Scientific and Technical Information (OSTI), March 2017. http://dx.doi.org/10.2172/1409274.

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Prudencio, E. Parallel 3D Finite Element Numerical Modelling of DC Electron Guns. Office of Scientific and Technical Information (OSTI), February 2008. http://dx.doi.org/10.2172/923310.

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White, D. A. Discrete time vector finite element methods for solving maxwell`s equations on 3D unstructured grids. Office of Scientific and Technical Information (OSTI), September 1997. http://dx.doi.org/10.2172/16341.

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Ravazdezh, Faezeh, Julio A. Ramirez, and Ghadir Haikal. Improved Live Load Distribution Factors for Use in Load Rating of Older Slab and T-Beam Reinforced Concrete Bridges. Purdue University, 2021. http://dx.doi.org/10.5703/1288284317303.

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This report describes a methodology for demand estimate through the improvement of load distribution factors in reinforced concrete flat-slab and T-beam bridges. The proposed distribution factors are supported on three-dimensional (3D) Finite Element (FE) analysis tools. The Conventional Load Rating (CLR) method currently in use by INDOT relies on a two-dimensional (2D) analysis based on beam theory. This approach may overestimate bridge demand as the result of neglecting the presence of parapets and sidewalks present in these bridges. The 3D behavior of a bridge and its response could be better modeled through a 3D computational model by including the participation of all elements. This research aims to investigate the potential effect of railings, parapets, sidewalks, and end-diaphragms on demand evaluation for purposes of rating reinforced concrete flat-slab and T-beam bridges using 3D finite element analysis. The project goal is to improve the current lateral load distribution factor by addressing the limitations resulting from the 2D analysis and ignoring the contribution of non-structural components. Through a parametric study of the slab and T-beam bridges in Indiana, the impact of selected parameters on demand estimates was estimated, and modifications to the current load distribution factors in AASHTO were proposed.
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Hoffman, E. L., and D. J. Ammerman. Dynamic pulse buckling of cylindrical shells under axial impact: A comparison of 2D and 3D finite element calculations with experimental data. Office of Scientific and Technical Information (OSTI), April 1995. http://dx.doi.org/10.2172/90744.

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SEISMIC PERFORMANCE OF SPATIAL STEEL BEAM-COLUMN CONNECTIONS. The Hong Kong Institute of Steel Construction, August 2022. http://dx.doi.org/10.18057/icass2020.p.125.

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This paper presents a finite element analysis for spatial beam-column connections in steel frame to better understand the structural behavior of spatial connections. After the simulation and validation of experimental results, a total of 7 refined 3D models, including beam-to-column connections at different positions in the steel frame, were created and analyzed cyclically through the nonlinear finite element program ABAQUS to investigate the spatial coupling effect. The momentrotation relationships and TI index distribution across the width of beam flanges, were discussed in detail to elucidate the mechanical performance interaction between strong-axis and weak-axis connections. Results showed that there is obvious interaction between two beams in strong-axis or weak-axis connections, and the plane exterior connections has better hysteresis performance. While the interaction of strong-axis connection and weak-axis connection slightly affected each other’s hysteresis performance, and thus the coupling effect of spatial connections is not evident.
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SIMPLIFIED MODELLING OF NOVEL NON-WELDED JOINTS FOR MODULAR STEEL BUILDINGS. The Hong Kong Institute of Steel Construction, December 2021. http://dx.doi.org/10.18057/ijasc.2021.17.4.10.

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Prefabricated modular steel (PFMS) construction is a more efficient and safe method of constructing a high-quality building with less waste material and labour dependency than traditional steel construction. It is indeed critical to have a precise and valuable intermodular joining system that allows for efficient load transfer, safe handling, and optimal use of modular units' strength. Thus, the purpose of this study was to develop joints using tension bolts and solid tenons welded into the gusset plate (GP). These joints ensured rigid and secure connectivity in both horizontal and vertical directions for the modular units. Using the three-dimensional (3D) finite element (FE) analysis software ABAQUS, the study investigated the nonlinear lateral structural performance of the joint and two-storey modular steel building (MSB). The solid element FE models of joints were then simplified by introducing connectors and beam elements to enhance computational efficiency. Numerous parameters indicated that column tenons were important in determining the joint's structural performance. Moreover, with a standard deviation (SD) of 0.025, the developed connectors and beam element models accurately predicted the structural behaviour of the joints. As a result of their simplification, these joints demonstrated effective load distribution, seismic performance, and ductility while reducing computational time, effort, and complexity. The validity of the FE analysis was then determined by comparing the results to the thirteen joint bending tests performed in the reference.
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LOCAL BUCKLING (WRINKLING) OF PROFILED METAL-FACED INSULATING SANDWICH PANELS – A PARAMETRIC STUDY. The Hong Kong Institute of Steel Construction, August 2022. http://dx.doi.org/10.18057/icass2020.p.248.

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This study aims to investigate the effects of various parameters including the height of the profiling region, spacing of profiling ribs, length of the panel, thickness and modulus of the foam core, and thickness of the profiled face sheet, on the local buckling capacity of profiled metal faced insulating sandwich panels. A simplified finite element (FE) modeling approach that models the profiled face sheet as a folded plate structure resting on elastic foundation is adopted. This modeling approach was validated through comparison with tests results and 3D FE modeling of the entire sandwich structure in a previous study conducted by the authors. The two-parameter elastic foundation properties are determined using a modified nonlinear Vlasov foundation model. The results show that all the above-mentioned parameters play important roles in controlling the buckling capacity of the panel. However, the slenderness ratio of the panel is the most dominant parameter among all. Understanding the influence of each of the aforementioned parameters aids in the design process of such panels and provides insight into their local buckling response.
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ENERGY DISSIPATION OF STEEL-CONCRETE COMPOSITE BEAMS SUBJECTED TO VERTICAL CYCLIC LOADING. The Hong Kong Institute of Steel Construction, September 2022. http://dx.doi.org/10.18057/ijasc.2022.18.3.3.

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The finite element (FE) software ABAQUS was used to establish a 3D FE model and perform a pseudo-static analysis of steel–concrete composite beams. With the validated model, the influences of several key parameters, including shear connection degree, force ratio, and transverse reinforcement ratio, on seismic behavior were investigated and discussed. In addition, the working performance of studs was analyzed. The FE analysis results show that the steel girder is the main energy dissipation component of the composite beam, and the energy dissipation of the steel girder is more than 80% of the total energy. The next is longitudinal reinforcement, followed by a concrete slab, the minimum proportion is the studs. Results show that the energy dissipation ratio of studs is less than 1% under the condition of the parameters. However, an increase in shear connection is beneficial to improve the energy dissipation of steel girders and rebars. Shear connection, force ratio, and steel girder width–thickness ratio are the major factors that influence bearing capacity and seismic behavior. Transverse reinforcement, section form, and stud diameter are the secondary factors. Finally, a seismic design for composite beams was established.
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A SIMPLE METHOD FOR A RELIABLE MODELLING OF THE NONLINEAR BEHAVIOUR OF BOLTED CONNECTIONS IN STEEL LATTICE TOWERS. The Hong Kong Institute of Steel Construction, March 2022. http://dx.doi.org/10.18057/ijasc.2022.18.1.6.

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The behaviour of bolted connections in steel lattice transmission line towers affects their load-bearing capacity and failure mode. Bolted connections are commonly modelled as pinned or fixed joints, but their behaviour lies between these two extremes and evolves in a nonlinear manner. Accordingly, an accurate finite element modelling of the structural response of complete steel lattice towers requires the consideration of various nonlinear phenomena involved in bolted connexions, such as bolt slippage. In this study, a practical method is proposed for the modelling of the nonlinear response of steel lattice tower connections involving one or multiple bolts. First, the local load-deformation behaviour of single-bolt lap connections is evaluated analytically depending on various geometric and material parameters and construction details. Then, the predicted nonlinear behaviour for a given configuration serves as an input to a 2D/3D numerical model of the entire assembly of plates in which the bolted joints are represented as discrete elements. For comparison purposes, an extensive experimental study comprising forty-four tests were conducted on steel plates assembled with one or two bolts. This approach is also extended to simulate the behaviour of assemblies including four bolts and the obtained results are checked against experimental datasets from the literature. The obtained results show that the proposed method can predict accurately the response of a variety of multi-bolt connections. A potential application of the strategy developed in this paper could be in the numerical modelling of full-scale steel lattice towers, particularly for a reliable estimation of the displacements.
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