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Статті в журналах з теми "Explicite FEM"

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Szturomski, B., and R. Kiciński. "Strength analysis of warship hull’s bottom loaded by the pressure wave from a non-contact explosion of sea mine explosion of sea mine." Journal of Physics: Conference Series 2130, no. 1 (2021): 012008. http://dx.doi.org/10.1088/1742-6596/2130/1/012008.

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Abstract The study was based on the analysis of stamina of steel flat bottom section of transport warships, burdened by the spherical pressure wave from the non-contact explosion of TNT at a distance of 20 m under the keel. This study aims to determine the TNT mass required to break the hull. The task was solved by finite element method (FEM) explicite using CAE program [1], in which the hull’s bottom was modelled as thin shell space. The hull’s burden with pressure wave was modelled as a pressure impulse specified by the formula introduced by T.L. Geers, K.S. Hunter and R.S. Price [2]. To des
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Hamza, Faouzi, Abdelmoumene Guedri, Hamid Hamadache, Mohammed Hadj Meliani, and Rami K. Suleiman. "Investigating plastic instability of DD14 steel sheet in deep drawing process: A material characterisation and FEM analysis of die radius impact." Structural Integrity and Life 25, no. 1 (2025): 135–40. https://doi.org/10.69644/ivk-2025-01-0135.

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The deep drawing process is one of the most complex forming processes, as several problems related to the plastic instability of the material to be deep drawn are notably necking, rupture and tearing. However, the parameters of the deep drawing process can cause these phenomena as well as the geometry of the deep drawn part. Particularly, a material having the formability for such a deep drawing operation remains the desired solution in this process. In this sense, the aim of this work is to investigate a problem of plastic instability of the material through a characterisation and modelling o
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Koide, M., H. Heguri, T. Kamegawa, Y. Nakajima, and H. Ogawa. "Optimization for Motorcycle Tire Using Explicit FEM." Tire Science and Technology 29, no. 4 (2001): 230–43. http://dx.doi.org/10.2346/1.2135241.

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Abstract A new procedure of the crown contour design for the motorcycle tire is proposed in this paper. The explicit finite element method (FEM) combined with the neural network has been utilized to optimize the cornering property of the motorcycle tire. For the motorcycle tire, the camber thrust is one of the most important cornering characteristics. The explicit FEM has been utilized for the camber thrust prediction to avoid poor numerical stability that will be caused by the implicit FEM. The prediction of the camber thrust that the results of finite element analyses (FEA) were in good agre
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Leheman, Pahaiti, Hiroo Shiojiri, and Kunihiko Uno. "Application of PML to Analysis of Dam-Reservoir-Foundation System with Cavitation Using Mixed Formulation." Applied Mechanics and Materials 256-259 (December 2012): 427–40. http://dx.doi.org/10.4028/www.scientific.net/amm.256-259.427.

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Convolution PML is known to have excellent wave absorbing capability, and has been used combined with FDM and FEM. Most of them are splitting type formulation for explicit FEM or FDM. Here implicit non-splitting type convolution PML procedures consistent with mixed formulation FEM as well as displacement based FEM are developed. The resulting coefficient matrices for convolution PML are symmetric if corresponding coefficient matrices of FEM are symmetric. The developed method is applied to dam-reservoir-foundation systems including reservoir cavitation, and the validity of the method is demons
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HAMA, Takayuki, Motoo ASAKAWA, Hiroshi FUKIHARU, and Akitake MAKINOUCHI. "Simulation of Tube Hydroforming by Static Explicit FEM." Proceedings of the Materials and processing conference 2003.11 (2003): 315–16. http://dx.doi.org/10.1299/jsmemp.2003.11.315.

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Ma, Ninshu, and Yasuyoshi Umezu. "Application of explicit FEM to welding deformation." Welding International 23, no. 1 (2009): 1–8. http://dx.doi.org/10.1080/09507110802348884.

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IKUSHIMA, Kazuki, Shinsuke ITOH, and Masakazu SHIBAHARA. "Development of Parallelized Idealized Explicit FEM Using GPU." QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY 31, no. 1 (2013): 23–32. http://dx.doi.org/10.2207/qjjws.31.23.

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Hama, Takayuki, Motoo Asakawa, Hiroshi Fukiharu, and Akitake Makinouchi. "Simulation of Hammering Hydroforming by Static Explicit FEM." ISIJ International 44, no. 1 (2004): 123–28. http://dx.doi.org/10.2355/isijinternational.44.123.

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Shahbeyk, Sharif, Mohammadreza Yaghoobi, and Abolhassan Vafai. "Explicit dynamics X-FEM simulation of heterogeneous materials." Finite Elements in Analysis and Design 56 (September 2012): 52–79. http://dx.doi.org/10.1016/j.finel.2012.02.010.

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Jiang, Chen, Xu Han, Zhi-Qian Zhang, G. R. Liu, and Guang-Jun Gao. "A Locking-Free Face-Based S-FEM via Averaging Nodal Pressure using 4-Nodes Tetrahedrons for 3D Explicit Dynamics and Quasi-statics." International Journal of Computational Methods 15, no. 06 (2018): 1850043. http://dx.doi.org/10.1142/s0219876218500433.

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A locking-free face-based S-FEM, combined with the Averaging Nodal Pressure (ANP) technique, is proposed to solve explicit dynamics of geometric nonlinear nearly-incompressible solids, using simplest linear tetrahedral elements (FS-FEM/ANP-T4). An explicit Adaptive Dynamic Relaxation (ADR) technique is also implemented for the analysis of quasi-static problems. Our studies have found that the proposed method has better accuracy and convergence compared to the standard FEM with ANP (FEM/ANP) and previous selective face-based and Node-based S-FEM (FS/NS-FEM). With the ADR, proposed method can re
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Дисертації з теми "Explicite FEM"

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Rallo, Ayerbe Marta. "Impact sur structure composite sandwich architecturée : application aux pales d'avions." Electronic Thesis or Diss., Université de Toulouse (2023-....), 2024. http://www.theses.fr/2024TLSES088.

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La sécurité constitue un aspect essentiel au développement des pièces et assemblages aéronautiques. Pour un avion à hélices, les pales assurent la propulsion de l'appareil, et garantissent sa portance. Elles sont essentielles. C'est pourquoi des essais de certification à l'impact oiseau sont nécessaires afin de garantir la capacité de l'avion à se poser en mode dégradé. Ces essais ont lieu à la fin de la phase de développement. Une caractérisation du comportement à l'impact en amont est nécessaire afin d'éviter d'éventuels coûts supplémentaires liés aux mauvais résultats de ces tests Les pales
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Banihashemi, Seyed Parsa. "Parallel explicit FEM algorithms using GPU's." Diss., Georgia Institute of Technology, 2015. http://hdl.handle.net/1853/54391.

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The Explicit Finite Element Method is a powerful tool in nonlinear dynamic finite element analysis. Recent major developments in computational devices, in particular, General Purpose Graphical Processing Units (GPGPU's) now make it possible to increase the performance of the explicit FEM. This dissertation investigates existing explicit finite element method algorithms which are then redesigned for GPU's and implemented. The performance of these algorithms is assessed and a new asynchronous variational integrator spatial decomposition (AVISD) algorithm is developed which is flexible and enco
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Vražina, Lukáš. "Parametrická studie absorpčního prvku zadní části vozidla." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2016. http://www.nusl.cz/ntk/nusl-241228.

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In 1995 was published a regulation from RCAR company which determines rules for crash tests in maximum speed of 15 km/h on vehicles lighter than 2,5 ton. The main reason was to reduce costs for car reparation in case of crash in low speed. My diploma thesis is focused on the modifications of deformation part in the car alias absorption part of the vehicle. In the first part of my diploma thesis has been done a research about organisations doing basic car crashes as well as topic focused on nonlinear mechanics and description of explicit FEM. In the second part of my work are settled conditions
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Kyrre, Anette Wester. "Quasi-static Analyses of Slender Structures with Complex Cross-Sections using Explicit FEM Codes." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for energi- og prosessteknikk, 2013. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-23661.

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It has previously been done analyses to find global stiffness values of an umbilical cable, with mixed results or no results at all when subjected to bending. There have also been difficulties in finding a distinct stick-slip point during bending. In this thesis, several models have been examined to get a step closer to resolve these particular issues. To begin with, a very simple flexible cable has been tested to see if the program ANSYS LS-Dyna can provide good global stiffness values, then of course with the use of an explicit scheme. When this first analysis gave good results, it was possi
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Rek, Václav. "Využití paralelizace při numerickém řešení úloh nelineární dynamiky." Doctoral thesis, Vysoké učení technické v Brně. Fakulta stavební, 2018. http://www.nusl.cz/ntk/nusl-392279.

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The main aim of this thesis is the exploration of the potential use of the parallelism of numerical computations in the field of nonlinear dynamics. In the last decade the dramatic onset of multicore and multi-processor systems in combination with the possibilities which now provide modern computer networks has risen. The complexity and size of the investigated models are constantly increasing due to the high computational complexity of computational tasks in dynamics and statics of structures, mainly because of the nonlinear character of the solved models. Any possibility to speed up such cal
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Wahlström, Catarina, and Gustaf Sellin. "Den dolda kompetensen : en longitudinell undersökning mellan åren 2007 - 2009 av fem gotländska småföretag." Thesis, Gotland University, Department of Business Administration, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:hgo:diva-100.

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<p>In this thesis we will discuss the importance of human resource development in smaller companies and if it will change from when the Swedish economy was in an economic boom and later on came to be in a recession. We choose to use a more qualitative approach for this research in order to conduct a more in-depth study of five smaller sized companies located on Gotland, Sweden. In order to limit our research we had as an ambition to answer these following questions:</p><p>• What obstacles are there when it comes to human resource development and knowledge transference within smaller sized comp
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Raffai, Peter. "Vytvoření a validace výpočtového FEM modelu kliky dveří pro crashové výpočty." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2012. http://www.nusl.cz/ntk/nusl-230249.

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The aim of this master’s thesis was to create a component model of a door handle stiffener used by the Volkswagen concern, which can be used for crash computations. Also to tune its parameters the way, its behavior corresponds the most to the real part’s. In the theoretical part the current regulations of the Euro NCAP are presented, concerning the testing and evaluation of the passive safety of new vehicles. Attention is focused on the evaluation of the side impact barrier tests, where the effect of the door handle stiffener’s damage is reflected the most. Shown are the reasons for the effort
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Hermansson, Michaela. "Är explicit undervisning nyckeln till ökad läsförståelse? : En kvalitativ intervjustudie om hur fem lärare i F–3 beskriver sin undervisning i läsförståelse och lässtrategier." Thesis, Högskolan Dalarna, Pedagogiskt arbete, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:du-21495.

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Resultaten av de senaste PIRLS-undersökningarna visar att svenska elevers läsförståelse har försämrats under senare år. Enligt forskning bör undervisningen vara inriktad på lässtrategier för att elever ska utveckla läsförståelse. För att eleverna ska lära sig använda olika lässtrategier självständigt när de tolkar text och skapar mening behöver de undervisas explicit. Undervisningen bör vara strukturerad och varierad samtidigt som läraren stöttar eleverna och anpassar undervisningen efter deras individuella behov. Syftet med studien har varit att undersöka hur lärare i F–3 undervisar i läsförs
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Nedělka, Pavel. "Deformační a napjatostní analýza nárazníkové částí automobilu při rázovém zatěžování." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2011. http://www.nusl.cz/ntk/nusl-229650.

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The master thesis deals with a stress-strain analysis of the front crash structure of a race car by using the finite element method. The structure is loaded by an impact loading. This type of analysis belongs to the transient analysis so the explicit formulation of the finite element method is used. The LS-DYNA software was used for calculations. The goal of this thesis is to express the influence of the crash structure to the change of the car's kinetic energy as well as the amount of absorbed energy in case of frontal impact.
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Vaněčková, Adéla. "Implicitní a explicitní metoda v nelineární dynamice." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2017. http://www.nusl.cz/ntk/nusl-265572.

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The final thesis „Explicit and Implicit methods in nonlinear dynamics“ deals with the issue of geometrical and physical nonlinear analysis of structures exposed to seismic loading by the methods of direct integration of equations of motion. Solution by the explicit and the implicit method is compared for three material models. While the differences between the results of the explicit method and the implicit Newmark method are small as expected, the differences are substantial between the results of different material models. However, these differences are explained and they are in full concord
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Книги з теми "Explicite FEM"

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Bianchi, Marco. Galileo in Europa La scelta del volgare e la traduzione latina del Dialogo sopra i due massimi sistemi. Fondazione Università Ca’ Foscari, 2020. http://dx.doi.org/10.30687/978-88-6969-450-9.

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In addition to his capital contribution to science and philosophy, Galileo is also celebrated as a master of the Italian language. The first part of the book focuses on the explicit passages in which the scientist justifies the choice of language, on the few Latin letters of his and on the coexistence of Italian and Latin in the last work (Discourses and Mathematical Demonstrations Relating to Two New Sciences). Subject of the second part is the Latin translation of the Dialogue Concerning the Two Chief World Systems, which was published in 1635 by Matthias Bernegger. Particular attention is g
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Levy, Jack S. Counterfactuals and Case Studies. Edited by Janet M. Box-Steffensmeier, Henry E. Brady, and David Collier. Oxford University Press, 2009. http://dx.doi.org/10.1093/oxfordhb/9780199286546.003.0027.

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This article shows that counterfactuals can be used along with case studies to make inferences, although strong theories are needed for this. The article also argues that game theory is one approach that provides this kind of theory because a game explicitly models all of the actors' options including those possibilities that are not chosen. The article then indicates that any counterfactual argument requires a detailed and explicit description of the alternative antecedent which is plausible and involves a minimal rewrite of history, and suggests that one of the strengths of game theory is it
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Dunfee, Thomas W. Stakeholder Theory. Edited by Andrew Crane, Dirk Matten, Abagail McWilliams, Jeremy Moon, and Donald S. Siegel. Oxford University Press, 2009. http://dx.doi.org/10.1093/oxfordhb/9780199211593.003.0015.

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This article provides a basic understanding of stakeholder thinking, arguably one of the very few theoretical frameworks generated by the corporate social responsibility (CSR) literature itself, to explore the management challenges of CSR. It considers the role of the stakeholder concept in helping managers make decisions allocating spending on discretionary social responsibility. Here, the focus is on CSR defined as discretionary spending in furtherance of an explicit measurable social objective consistent with relevant social norms and laws. This article introduces the concept of discretiona
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Rajeev, S. G. Finite Difference Methods. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198805021.003.0014.

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This chapter offers a peek at the vast literature on numerical methods for partial differential equations. The focus is on finite difference methods (FDM): approximating differential operators by functions of difference operators. Padé approximants (Fornberg) give a unifying principle for deriving the various stencils used by numericists. Boundary value problems for the Poisson equation and initial value problems for the diffusion equation are solved using FDM. Numerical instability of explicit schemes are explained physically and implicit schemes introduced. A discrete version of theClebsch f
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Witten, Edward, Martin Bridson, Helmut Hofer, Marc Lackenby, and Rahul Pandharipande. Lectures on Geometry. Edited by N. M. J. Woodhouse. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780198784913.001.0001.

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This volume contains a collection of papers based on lectures delivered by distinguished mathematicians at Clay Mathematics Institute events over the past few years. Although not explicitly linked, the topics in this volume have a common flavour and a common appeal to all who are interested in recent developments in geometry. They are intended to be accessible to all who work in this general area, regardless of their own particular research interests.
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Hargreaves, Ian. Introduction: waiting for the endgame. Oxford University Press, 2014. http://dx.doi.org/10.1093/actrade/9780199686872.003.0001.

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In the first few years of the 21st century, the digital ‘communications revolution’ provided entirely new global platforms capable of delivering online news, in all media. The ‘Introduction’ explains the difficulties associated with such changes. Can journalists be trusted? We need competing cultures of ownership and practice if our news media are to be truly diverse and widely trusted. We need journalism that does not seek power on its own account, but which has the explicit goal of empowering others. Journalism’s job is to provide the information and argument that enable societies to establi
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Marcus, Laura. 8. Autobiographies, autobiographical novels, and autofictions. Oxford University Press, 2018. http://dx.doi.org/10.1093/actrade/9780199669240.003.0009.

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Few of the great modernist writers produced explicit or fully fledged autobiographies, but the expansion of the ‘life-writing’ category has made visible the prevalence of autobiographical novels, including works by Katherine Mansfield, James Joyce, D. H. Lawrence, Dorothy Richardson, and Virginia Woolf. ‘Autobiographies, autobiographical novels, and autofictions’ explains that in the late 19th and early 20th centuries there was an increasingly ‘aesthetic’ approach to autobiography. New genres arose that blended life-writing and fiction, such as the personal essay, the ‘imaginary portrait’, and
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Nikoletta, Kleftouri. 7 The UK Deposit Insurance Framework. Oxford University Press, 2015. http://dx.doi.org/10.1093/law/9780198743057.003.0007.

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The Financial Services Compensation Scheme, the UK’s deposit insurer, has been subject to a broad overhaul during the last few years. This chapter divides these regulatory developments into three phases: (a) the creation of the first explicit deposit protection scheme; (b) the series of reforms that took place in 2000 and the creation of the FSCS as a single protection scheme for financial institutions; and (c) the post-2007 era during which main changes include the creation of the Prudential Regulation Authority and Financial Conduct Authority as two separate regulators, and further strengthe
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Chiang, Connie Y. Introduction. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780190842062.003.0001.

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While many scholars and commentators have written about the Japanese American incarceration, few have adopted an explicit environmental focus. The introduction explains why using an environmental lens is important to understanding this notorious episode in US history. Environmental history examines how the environment influenced humans and how humans interacted with and transformed the natural world. Nature Behind Barbed Wire applies this approach and demonstrates that the Japanese American incarceration was an environmental process that was connected to the lands and waters of the Pacific Coa
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Wodak, Ruth. The Radical Right and Antisemitism. Edited by Jens Rydgren. Oxford University Press, 2018. http://dx.doi.org/10.1093/oxfordhb/9780190274559.013.4.

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This chapter considers the question of whether antisemitism today should be regarded as a genuine structural feature of contemporary society or rather as a relic of an old but now overcome European ideology. It begins by providing some working definitions of the most prominent forms of current expressions of antisemitism. It then describes some relevant antisemitic stereotypes as well as related strategies of denial. It summarizes the few existing opinion polls oriented toward right-wing populism that correlate with antisemitism. Finally, it presents two typical manifestations of antisemitism
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Частини книг з теми "Explicite FEM"

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Bhandarkar, Milind A., and Laxmikant V. Kalé. "A Parallel Framework for Explicit FEM." In High Performance Computing — HiPC 2000. Springer Berlin Heidelberg, 2000. http://dx.doi.org/10.1007/3-540-44467-x_35.

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Clement, T. "Data reification without explicit abstraction functions." In FME'96: Industrial Benefit and Advances in Formal Methods. Springer Berlin Heidelberg, 1996. http://dx.doi.org/10.1007/3-540-60973-3_88.

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Christakis, Maria, Peter Müller, and Valentin Wüstholz. "Collaborative Verification and Testing with Explicit Assumptions." In FM 2012: Formal Methods. Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-32759-9_13.

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Menouillard, T., N. Moës, and A. Combescure. "An optimal explicit time stepping scheme for cracks modeled with X-FEM." In IUTAM Symposium on Discretization Methods for Evolving Discontinuities. Springer Netherlands, 2007. http://dx.doi.org/10.1007/978-1-4020-6530-9_16.

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Ta, Quang-Trung, Ton Chanh Le, Siau-Cheng Khoo, and Wei-Ngan Chin. "Automated Mutual Explicit Induction Proof in Separation Logic." In FM 2016: Formal Methods. Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-48989-6_40.

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Wijs, Anton, Thomas Neele, and Dragan Bošnački. "GPUexplore 2.0: Unleashing GPU Explicit-State Model Checking." In FM 2016: Formal Methods. Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-48989-6_42.

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Lekala, M. L., M. Braun, and S. A. Sofianos. "Three-Body Bound State Calculations Without Explicit Partial Wave Decomposition." In Few-Body Problems in Physics ’02. Springer Vienna, 2003. http://dx.doi.org/10.1007/978-3-7091-6728-1_52.

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Nemura, H., Y. Akaishi, and Y. Suzuki. "Five-Body Calculation of Λ 5 He with Explicit Σ Admixture." In Few-Body Problems in Physics ’02. Springer Vienna, 2003. http://dx.doi.org/10.1007/978-3-7091-6728-1_64.

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Geller, S., S. Kollmannsberger, M. El Bettah, et al. "An Explicit Model for Three-Dimensional Fluid-Structure Interaction using LBM and p-FEM." In Fluid Structure Interaction II. Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-14206-2_11.

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Pawar, Pravin, Raj Ballav, and Amaresh Kumar. "FEM Analysis of Different Materials Based on Explicit Dynamics ANSYS in Electrochemical Discharge Machine." In Lecture Notes on Multidisciplinary Industrial Engineering. Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-10-8518-5_9.

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Тези доповідей конференцій з теми "Explicite FEM"

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Lee, Yoonhee, Nam Zin Cho, and Sun Kyo Chung. "Single-Channel Thermal Analysis of Fully Ceramic Microencapsulated Fuel via Two-Temperature Homogenized Model." In 2014 22nd International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/icone22-30072.

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The fully ceramic microencapsulated (FCM) fuel, one of the accident tolerant fuel (ATF) concepts, consists of TRISO particles randomly dispersed in SiC matrix. This high heterogeneity in compositions leads to difficulty in explicit thermal calculation of such a fuel. For thermal analysis of a fuel element in very high temperature reactors (VHTRs) which has a similar configuration to the FCM fuel, a two-temperature homogenized model was proposed by the authors. The model was developed using particle transport Monte Carlo method for heat conduction problems. It gives more realistic temperature p
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Adams, Matthew J., Anne K. Silverman, and Cameron J. Turner. "Pseudo Elimination of Geometry Dependence in Surrogate Models of Distributed Knee Loads From an Explicit Dynamic Finite Element Analysis." In ASME 2015 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/detc2015-47850.

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The premise of a total knee replacement (TKR) is to alleviate pain and increase joint mobility. The expected 20 year life span of the knee insert exceeds that of the standard patient given traditional wear and tear. With more active lifestyles, greater wear rates and shorter life spans are predicted for tibial inserts. Greater wear rates increase the probability that a patient will require additional surgery later in life. This research provides a knee loading model to estimate the pressure loading distribution through Finite Element Modeling (FEM). The publicly available patient data was used
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Maeda, Y., S. Ogata, D. Fukuda, T. Inui, H. Yasuhara, and K. Kishida. "A Framework of Coupled Thermal-Hydraulic-Mechanical Analysis for Simulating Hydraulic Fracturing Based on Explicit and Implicit Methods." In 57th U.S. Rock Mechanics/Geomechanics Symposium. ARMA, 2023. http://dx.doi.org/10.56952/arma-2023-0759.

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ABSTRACT To design an engineered/enhanced geothermal system (EGS) efficiently, it is essential to develop a coupled thermal-hydraulic-mechanical (THM) simulator, that can track the hydraulic fracturing processes within the rocks including the fracture initiation/propagation and local heat non-equilibrium in the fractures driven by cold injection water or thermal-fluid flow along the fracture surfaces. To realistically capture the coupled THM processes that are sensitive to the presence of rock fractures, a coupled simulator should be based on an analysis method that can insert the explicit fra
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Kabir, M. A., C. F. Higgs, M. R. Lovell, V. Jasti, and M. C. Marinack. "Explicit Finite Element Simulation of Granular Flow in an Annular Shear Cell." In ASME/STLE 2009 International Joint Tribology Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/ijtc2009-15215.

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Explicit finite element method modeling of granular flow behavior in an annular shear cell has been studied and presented in this paper. The explicit finite element method (FEM) simulations of granular flow in an annular shear cell with around 1633 particles were performed, where the inner wheel rotated at a very high speed and the outer disk remained stationary. The material properties of the particles and the outer wheel were defined as elastic steel whereas the inner wheel was elastic aluminum. In this investigation, the explicit FEM model mimicked granular flow in an experimental set up wh
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Kondo, Teruyuki, and Yoshihide Ito. "Predicting Ride Comfort on Seat Using Explicit FEM Code." In SAE 2002 World Congress & Exhibition. SAE International, 2002. http://dx.doi.org/10.4271/2002-01-0779.

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HOMRANI, Mohamed Khalil. "Comparison between ALE and Lagrangian finite element formulations to simulate tensile loading for FDM parts." In Material Forming. Materials Research Forum LLC, 2024. http://dx.doi.org/10.21741/9781644903131-16.

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Abstract. Material Extrusion (MEX) and by extension Fused Deposition Modeling (FDM) is a popular Additive Manufacturing (AM) process used to fabricate complex parts. FDM as of recent is no longer solely utilized for prototyping parts but also used for producing functional components in industrial and research applications. The investigation of material properties of these FDM parts by experimental means is a time-consuming task. Therefore, the use of numerical simulation methods is highly required. Since 1993, various Finite Element Analysis (FEA) models are found in literature attempting to e
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Shibahara, Masakazu, Shinsuke Itoh, Takashi Okada, Kazuki Ikushima, and Satoru Nishikawa. "Prediction of Residual Stress in Multi-Pass Welded Joint Using Idealized Explicit FEM." In ASME 2012 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/pvp2012-78357.

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Heavy thick steel plate is used for pipes and also ship structures, and multi-pass welding is usually adopted for the welding. Because of the heavy thickness, residual stress plays an important role, particularly in crack propagation. Implicit Finite Element Method (FEM) is often used as a welding analysis method to examine the residual stress of the welded plate, but it is not easily applied to multi-pass welding problems with tens of thousands of degrees of freedom, because of the huge computational time and memory consumption. Alternatively, it is possible to simulate the residual stress in
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Marais, N., and D. B. Davidson. "Validating a high-order time domain hybrid implicit/explicit FEM implementation." In 2009 International Conference on Electromagnetics in Advanced Applications (ICEAA). IEEE, 2009. http://dx.doi.org/10.1109/iceaa.2009.5297423.

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Ikushima, Kazuki, Shinsuke Itoh, and Masakazu Shibahara. "Development of Ultra Large Scale Computation for Transient Welding Deformation and Stress Using Idealized Explicit FEM Accelerated by GPU." In ASME 2012 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/pvp2012-78354.

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Numerical simulations such as Finite Element Method (FEM) are widely used as tool of structural analyses in both design and production. However, in the application of FEM to welding problems, the simulation scale is usually limited to the welding joint level. Only a few large-scale welding analyses are performed on existing research because welding problems are transient and show strong nonlinearity. In such cases, it is necessary to use static implicit FEM to achieve an accurate analysis, but the larger analysis scale requires larger memory consumption and computing time. Thus, we previously
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Anjos, Gustavo R., Norberto Mangiavacchi, Jose Pontes, and John Thome. "ALE-FEM for Two-Phase Flows With Heat and Mass Transfer in Microchannels." In ASME 2015 International Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Microsystems collocated with the ASME 2015 13th International Conference on Nanochannels, Microchannels, and Minichannels. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/ipack2015-48441.

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A numerical method is described to study two-phase flows for single and multiple bubbles with phase change. The fluid flow equations are based on the Arbitrary Lagrangian-Eulerian formulation (ALE) and the Finite Element Method (FEM), creating a new two-phase method with an improved model for the liquid-gas interface in microchannels. A successful adaptive mesh update procedure is also described for effective management of the mesh at the two-phase interface to remove, add and repair surface elements, since the computational mesh nodes move according to the flow. The Lagrangian description exp
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Звіти організацій з теми "Explicite FEM"

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Riglin, Jacob Daniel. Explicit FEA Analysis of SAVY Container Impact Angle. Office of Scientific and Technical Information (OSTI), 2018. http://dx.doi.org/10.2172/1422912.

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Perez-Rivera, Anthony, Jonathan Trovillion, Peter Stynoski, and Jeffrey Ryan. Simulated barge impacts on fiber-reinforced polymers (FRP) composite sandwich panels : dynamic finite element analysis (FEA) to develop force time histories to be used on experimental testing. Engineer Research and Development Center (U.S.), 2024. http://dx.doi.org/10.21079/11681/48080.

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The purpose of this study is to evaluate the dynamic response of fiber-reinforced polymer (FRP) composite sandwich panels subjected to typical barge impact masses and velocities to develop force time histories that can be used in controlled experimental testing. Dynamic analyses were performed on FRP composite sandwich panels using the finite element method software Abaqus/Explicit. The “traction-separation” law in the Abaqus software is used to define the cohesive surface interaction properties to evaluate the damage between FRP composite laminate layers as well as the core separation within
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Martinez, Monica, and Michelle Oliva. In Pursuit of Racial Equity: A Pathway for Action and Transformation in Education. EduDream, 2021. http://dx.doi.org/10.62137/babg2923.

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This report highlights the current state of educational inequities and national efforts to address them through policy, resources, tools, and technical assistance. Based on our review of over sixty equity-centered resources, we find that few toolkits are explicitly designed for K-12 schools and districts. We make a case for practical tools and resources, such as the EET™, to support education leaders in their equity work. Finally, based on our analysis of federal efforts to advance equity and a new administration that is prioritizing racial justice, we outline immediate action steps the Biden-
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Hevia, Constantino, and Juan Pablo Nicolini. Research Insights: Do Primary Commodity Prices Account for the Fluctuations of Exchange Rates? Inter-American Development Bank, 2022. http://dx.doi.org/10.18235/0004605.

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We explicitly derive a relationship between bilateral real exchange rates and primary commodity prices in a model that highlights the role of heterogeneity in production structures across countries. Fluctuations of just a few primary commodity prices account for between one third and one half of the volatility of the bilateral exchange rates of the United States against Germany, Japan, and the United Kingdom. Once we calibrate our quantitative model with data from input-output matrices and shocks to generate the observed commodity price fluctuations, our model delivers the same volatility and
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Baker, Justin S., George Van Houtven, Yongxia Cai, et al. A Hydro-Economic Methodology for the Food-Energy-Water Nexus: Valuation and Optimization of Water Resources. RTI Press, 2021. http://dx.doi.org/10.3768/rtipress.2021.mr.0044.2105.

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Growing global water stress caused by the combined effects of growing populations, increasing economic development, and climate change elevates the importance of managing and allocating water resources in ways that are economically efficient and that account for interdependencies between food production, energy generation, and water networks—often referred to as the “food-energy-water (FEW) nexus.” To support these objectives, this report outlines a replicable hydro-economic methodology for assessing the value of water resources in alternative uses across the FEW nexus–including for agricultur
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Graft, Auralice, Nicole Haberland, and Rachel E. Goldberg. Married adolescents: A review of programmes. Population Council, 2004. http://dx.doi.org/10.31899/pgy22.1006.

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Historically, major adolescent and reproductive health initiatives have failed to explicitly consider the needs of married adolescents. This paper provides insight into what is being done—or not being done—to support married adolescent girls and boys, how these populations’ needs are being conceptualized, and the extent to which social context is factored into program design. Some early work with adolescent mothers (married and unmarried) is considered. The degree to which selected adolescent programs have been able to reach married girls with their activities is briefly examined. A few basic
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Allais, Stephanie, and Carmel Marock. What Problem Should Skills Solve? Interrogating Theories of Change Underpinning Strategies and Interventions in Vocational Education and Skills in LMICs. Research on Improving Systems of Education (RISE), 2023. http://dx.doi.org/10.35489/bsg-rise-wp_2023/136.

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The aim of this paper is to understand the ‘theory of change’ underlying interventions to support vocationalisation of general education as well as vocational education and training (VET) and skills development. The focus is on interventions supported by development agencies and donors, although national policies are also considered, as the agencies work with governments and are both guided by, and influence, their priorities. The first aim is to interrogate what problem VET is seen as the answer to, and how VET is seen to solve that problem (their theory of change). The second aim is to under
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Megersa, Kelbesa. Financial Inclusion in a Refugee Response. Institute of Development Studies, 2021. http://dx.doi.org/10.19088/k4d.2021.122.

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The growing scope, frequency, and complexity of forced displacement, both inside and outside of countries, has pushed donors and other development groups to rethink their approaches to humanitarian crises, particularly on refugee response. Financial inclusion is widely regarded as a particularly critical tool that development organisations can employ to mitigate the catastrophic impact of humanitarian crises on refugees. Financial inclusion would provide a wide range of financial products – such as savings, remittances, loans, and insurance – to both refugees and citizens of host countries, wh
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Haider, Huma. Education, Conflict, and Stability in South Sudan. Institute of Development Studies (IDS), 2021. http://dx.doi.org/10.19088/k4d.2021.129.

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This Emerging Issues Report explores the relationship between education, conflict, and (in)stability in South Sudan, drawing on a wide range of academic, policy, and programming literature. There is a growing body of research on the ways in which education can both exacerbate conflict and contribute to peace. The 4Rs framework (focusing on aspects of Redistribution, Recognition, Representation, and Reconciliation) provides a holistic way to explore and address the education system’s relationship to economic, social, cultural and political development processes; and its role in producing or exa
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Megersa, Kelbesa. Strengths and Weaknesses of INGOs in Delivering Development Outcomes. Institute of Development Studies, 2022. http://dx.doi.org/10.19088/k4d.2022.090.

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Compared to smaller or local NGOs, international non-governmental organisations (INGOs) have more influence or “voice” with decision-makers, funding agencies, and policymakers. As a result, INGOs are often better positioned to impact both domestic and international policy (Kreienkamp, 2017; Cooper, 2018; Morton, n.d.).This rapid review therefore seeks to find out the strengths and weaknesses of INGOs in delivering development and other outcomes?INGOs offer local CSOs valuable capacity-building opportunities as well as exposure to a broader range of expertise and development approaches. Many lo
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