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Digital Twin Approach for Current Protection Relays: Utilizing Real-Time Data for Optimal Protection
No full text12th International Conference on Renewable Energy Research and Applications (ICRERA) -- AUG 29-SEP 01, 2023 -- Oshawa, CANADAThis paper presents an innovative digital twin approach to improve current protection relays in hydroelectric power plants, focusing on Balkaya Hydroelectric Power Plant (HEPP) as a practical case study. The proposed system utilizes real-time data to create a digital replica of the physical relay, adhering to industry standards like IEC, IEEE, and UK for protection. The development process details seamless data integration from Balkaya HEPP, with continuous real-time current monitoring by the digital twin. Advanced data analytics coupled with real-time monitoring enhance accuracy, speed, and flexibility in current protection. The paper explores diverse protection scenarios, testing the digital twin model under different conditions by simulating potential threats, evaluating its performance, compliance with international standards, and highlighting key advantages. The study showcases the digital twin's potential to transform energy sector protection systems, optimize measures, and expedite responses to abnormalities, thereby significantly enhancing the safety and stability of hydroelectric power plants.IEEE,IEEE Ind Applicat Soc,IES,IjSmartGrid,Int Journal Renewable Energy Res,IEEJ,IEEJ IAS,IEICE Commun Soc,TMEIC,Istanbul Nisantasi Univ,NXTEC,JR E Gr
25-30 Ghz Frekans Bandı için Suex Kuru Film Fotoresist Malzeme Karakterizasyonu
No full textGünümüzde mobil, multimedya ve haberleşme uygulamalarının geliştirilmesiyle birlikte yüksek oranda veri iletim hızına, yüksek bant genişliğine ve düşük gecikmeli sistemlere olan talep gün geçtikçe artma eğilimindedir. Bu teknolojiler hızla gelişirken, mikrodalga frekans bandının günümüz teknolojisindeki bu talepleri karşılayamadığı ortaya çıkmıştır. Bu taleplere cevap olarak bilim adamları beşinci nesil (5G) haberleşme sistemlerini geliştirmek için çalışmalar yapmışlardır. 5G haberleşme sistemleri ile önceki nesil haberleşme sistemleri arasındaki en temel farklardan biri taşıyıcı frekans banlarının milimetre dalga frekans bölgesinden (30 GHz-300 GHz) seçilmesidir. Taşıma frekans bandının milimetre frekans bantlarında seçilmesi bant genişliğini artırarak yüksek hızda veri iletimine olanak sağlar ve haberleşme sistemlerinin kapasite problemini ortadan kaldırmayı hedefler. Milimetre dalga frekans bandında yapılan çalışmalar incelendiğinde hava ve otomotiv radar alanında çeşitli çalışmaların yapıldığı görülmektedir. Ayrıca yüksek çözünürlüklü görüntü elde etmek için de milimetre dalga frekans bandının kullanıldığı çalışmalar da karşımıza çıkmaktadır. Bunlara ek olarak alıcı-verici, sensör, drone gibi farklı alanlarda da çeşitli çalışmaların yapıldığı raporlanmıştır. Bu çalışmalardaki frekans spektrumlarının belirlenmesindeki en önemli temel faktörlerden biri havanın elektromanyetik dalgayı sönümleme miktarı olmuştur. Yapılan çalışmalara göre 5G haberleşme sistemleri için en uygun milimetre dalga frekans bantlarının 28 GHz, 38 GHz ve 64 GHz-71 GHz olduğu belirlenmiştir. Verilen bu frekans bantlarında yapılan çalışmalar incelendiğinde ise özellikle bu frekans bantları için tasarlanmış aktif ve pasif RF devrelerin tasarlandığı ve üretildiği görülmektedir. Bu çalışmalarda pasif devrelerin üretilmesinde geleneksel üretim teknikleri baskı devre yöntemi ve yüksek sıcaklıkta seramik gibi üretim teknolojileri kullanılmasına rağmen bu teknolojiler bilim adamları tarafından yeterli olarak görülmemektedir. Bu durumların önüne geçmek, yüksek hassasiyet ve düşük kayıplı yapılarının üretilmesi için litografi tekniği ile üretim teknolojisi bilim adamları tarafından önerilmiştir. Bu teknoloji ile mikro ve nano boyutta elektromekanik sistemler algılayıcı, anten vb. birçok çalışma literatürde bulunmaktadır. Bu yapılan çalışmalarda sabit bir alt taş üzerine malzeme olarak sıvı dielektrik fotoresist (AZ-P4620, SU-8) kullanıldığı görülmektedir. Sıvıların kaplama yönteminde (spin coating) meydana gelen düzensiz dağılımlar, zaman alan üretim süreci ve zehirli olmaları bu teknolojinin olumsuz yönleri olarak gösterilmiştir. Bu durumun önüne geçmek için ise kısmen yeni bir teknoloji olan kuru film dielektrik fotoresistler kullanılmaya başlanmıştır. Bu bakımdan, bu projede 25-30 GHz frekans bandında SUEX kuru film fotoresistin milimetre dalga boyu frekans bölgesinde malzeme karakterizasyon çalışmasının literatürde ilk kez gerçekleştirilmesi amaçlanmaktadır. Ayrıca SUEX tabanlı eş düzlemsel dalga kılavuzu tasarımı yapılarak malzemenin performans verileri literatürde ilk kez elde edilecektir
The Role of Using a Digital Interface to Enable Lower Secondary Students to Adopt Good Habits
No full textInSEA World Congress 2023Today, increasing living standards and the endless options that life offers to people create several uncertainties. People who do not know what to do and cannot discover what is good for them may experience difficulties in life. Not intervening in the types of behaviors acquired through human life at an early school age leads people to feelings of stress and boredom which cause them to form bad habits and sometimes appeal to violence. In addition, young people's bad habits also blunt their artistic creativity and design skills. In this paper, it was briefly mentioned how habits are shaped in individuals and how good and bad habits are formed. The study also focuses on the reasons why young students appeal to violence and how it can be prevented through art education. A digital interface has been designed to help students aged 11-14 to stay away from violence and bad habits therefore adopt good habits. The aim is to evaluate this interface, which will be used in art classes, in line with the opinions of field educators and experts. Since it is more difficult to change habits in adults and the elderly than in young people and children when it comes to external intervention, students aged 11-14 were selected as the study area, and in this context, secondary school teachers, pedagogues, and expert designers were selected as the sample and their opinions were consulted
Grieving Schizophrenia: Impacts and Coping With Ambiguous Loss Among Parents of Adults Diagnosed With Schizophrenia
No full textBu çalışmanın amacı, şizofreni hastası yetişkin çocuğuna bakım veren ebeveynlerin, yaşadığı bakım verme yüklerinden biri olarak görülen belirsiz kaybı nasıl deneyimlediklerini ve bununla nasıl başa çıktıklarını derinlemesine araştırmaktır. Bu amaçla, Ankara'daki şizofreni dayanışma dernekleri aracılığıyla 10 katılımcı ile derinlemesine görüşmeler gerçekleştirilmiştir. Katılımcılarla yapılan yarı yapılandırılmış görüşmelerle elde edilen veriler, nitel metodoloji yöntemlerinden biri olan refleksif tema analizi ile analiz edilmiştir. Analiz sonucunda dört üst tema belirlenmiştir: nesnel yükler, öznel yükler, aile ve sosyal yaşama ilişkin yükler ve başa çıkma. Bulgular, katılımcıların çocuklarına ve kendi yaşamlarının farklı boyutlarına ilişkin belirsiz kayıp ve yas duygularını yaşadıklarını göstermiştir. Bu anlamda bulgular genel olarak ilgili literatürle tutarlıdır. Başa çıkma ile ilgili bulgular ise, çocuklarına bakım veren ebeveynlerin belirsiz kayıpla başa çıkmada kullandıkları işlevsel başa çıkma stratejilerinin önemini ortaya koymuştur.The aim of this study is to explore in depth how parents who care for their adult child with schizophrenia experience and cope with ambiguous loss, which is seen as one of the caregiver burdens experienced by caregivers. For this purpose, in-depth interviews were conducted with 10 participants, all members of the schizophrenia solidarity associations in Ankara. The data obtained from the participants with semi-structured interviews were analyzed by reflexive theme analysis, one of the qualitative methodology methods. As a result of the analysis, four superordinate themes were identified: objective burdens, subjective burdens, family ; social burdens and coping. The findings showed that the participants experienced ambiguous loss and grief regarding their children and burdens in different dimensions of their own lives. In this sense, the findings are generally consistent with the relevant literature. The findings related to coping revealed the importance of functional coping strategies used by parents caring for their children in coping with ambiguous loss. The results are discussed and clinical implications and directions for future research are provided
Correlations Between Flow and Transverse Momentum in Xe Plus Xe and Pb Plus Pb Collisions at the Lhc With the Atlas Detector: a Probe of the Heavy-Ion Initial State and Nuclear Deformation
No full textThe correlations between flow harmonics v(n) for n = 2, 3, and 4 and mean transverse momentum [pT] in Xe-129 + Xe-129 and Pb-208 + Pb-208 collisions at root s = 5.44 and 5.02 TeV, respectively, are measured using charged particles with the ATLAS detector. The correlations are potentially sensitive to the shape and size of the initial geometry, nuclear deformation, and initial momentum anisotropy. The effects from nonflow and centrality fluctuations are minimized, respectively, via a subevent cumulant method and an event-activity selection based on particle production at very forward rapidity. The v(n)-[p(T)] correlations show strong dependencies on centrality, harmonic number n, pT, and pseudorapidity range. Current models qualitatively describe the overall centrality -and system-dependent trends but fail to quantitatively reproduce all features of the data. In central collisions, where models generally show good agreement, the v(2)-[p(T)] correlations are sensitive to the triaxiality of the quadruple deformation. Comparison of the model with the Pb + Pb and Xe + Xe data confirms that the Xe-129 nucleus is a highly deformed triaxial ellipsoid that has neither a prolate nor oblate shape. This provides strong evidence for a triaxial deformation of the Xe-129 nucleus from high-energy heavy-ion collisions.ANPCyT, Argentina; YerPhI, Armenia; ARC, Australia; BMWFW, Austria; FWF, Austria; ANAS, Azerbaijan; CNPq, Brazil; FAPESP, Brazil; NSERC, Canada; CFI, Canada; NSFC, China; MEYS CR, Czech Republic; DNRF, Denmark; DNSRC, Denmark; IN2P3-CNRS, France; CEA-DRF/IRFU, France; BMBF, Germany; MPG, Germany; Hong Kong SAR, China; ISF, Israel; INFN, Italy; MEXT, Japan; JSPS, Japan; CNRST, Morocco; RCN, Norway; MEiN, Poland; FCT, Portugal; MNE/IFA, Romania; MESTD, Serbia; MSSR, Slovakia; ARRS, Slovenia; MIZS, Slovenia; MICINN, Spain; Wallenberg Foundation, Sweden; SERI, Switzerland; MOST, Taiwan; DOE, United States of America; NSF, United States of America; BCKDF, Canada; CANARIE, Canada; Compute Canada, Canada; Czech Republic [PRIMUS 21/SCI/017, UNCE SCI/013]; COST, European Union; ERC, European Union; ERDF, European Union; Horizon 2020, European Union; Marie Skodowska-Curie Actions, European Union; Investissements d'Avenir Labex, France; Investissements d'Avenir Idex , France; ANR, France; DFG , Germany; AvH Foundation, Germany; Herakleitos programme - EU-ESF, Greece; Thales programme - EU-ESF, Greece; Aristeia programme - EU-ESF, Greece; Greek NSRF, Greece; BSF-NSF, Israel; MINERVA, Israel; Norwegian Financial Mechanism 2014-2021, Norway; NCN, Poland; NAWA, Poland; La Caixa Banking Foundation, Spain; CERCA Programme Generalitat de Catalunya, Spain; PROMETEO Programme Generalitat Valenciana, Spain; GenT Programme Generalitat Valenciana, Spain; Goran Gustafssons Stiftelse, Sweden; Royal Society, United Kingdom; Leverhulme Trust, United Kingdom; STFC, United Kingdom; TENMAK, Turkiye; Canton of Geneva, Switzerland; Canton of Bern, Switzerland; SNSF, Switzerland; SRC, Sweden; DSI/NRF, South Africa; NWO, Netherlands; Benoziyo Center, Israel; RGC, China; GSRI, Greece; HGF, Germany; SRNSFG, Georgia; Minciencias, Colombia; MOST, China; CAS, China; ANID, Chile; CERN; NRC, CanadaWe thank CERN for the very successful operation of the LHC, as well as the support staff from our institutions without whom ATLAS could not be operated efficiently. We acknowledge the support of ANPCyT, Argentina; YerPhI, Armenia; ARC, Australia; BMWFW and FWF, Austria; ANAS, Azerbaijan; CNPq and FAPESP, Brazil; NSERC, NRC, and CFI, Canada; CERN; ANID, Chile; CAS, MOST, and NSFC, China; Minciencias, Colombia; MEYS CR, Czech Republic; DNRF and DNSRC, Denmark; IN2P3CNRS and CEA-DRF/IRFU, France; SRNSFG, Georgia; BMBF, HGF and MPG, Germany; GSRI, Greece; RGC and Hong Kong SAR, China; ISF and Benoziyo Center, Israel; INFN, Italy; MEXT and JSPS, Japan; CNRST, Morocco; NWO, Netherlands; RCN, Norway; MEiN, Poland; FCT, Portugal; MNE/IFA, Romania; MESTD, Serbia; MSSR, Slovakia; ARRS and MIZS, Slovenia; DSI/NRF, South Africa; MICINN, Spain; SRC and Wallenberg Foundation, Sweden; SERI, SNSF, and Cantons of Bern and Geneva, Switzerland; MOST, Taiwan; TENMAK, Turkiye; STFC, United Kingdom; DOE and NSF, United States of America. In addition, individual groups and members have received support from BCKDF, CANARIE, Compute Canada, and CRC, Canada; PRIMUS 21/SCI/017 and UNCE SCI/013, Czech Republic; COST, ERC, ERDF, Horizon 2020, and Marie Sklodowska-Curie Actions, European Union; Investissements d'Avenir Labex, Investissements d'Avenir Idex, and ANR, France; DFG and AvH Foundation, Germany; Herakleitos, Thales, and Aristeia programs co-financed by EU-ESF and the Greek NSRF, Greece; BSF-NSF and MINERVA, Israel; Norwegian Financial Mechanism 2014-2021, Norway; NCN and NAWA, Poland; La Caixa Banking Foundation, CERCA Programme Generalitat de Catalunya, and PROMETEO and GenT Programmes Generalitat Valenciana, Spain; Goran Gustafssons Stiftelse, Sweden; The Royal Society and Leverhulme Trust, United Kingdom. The crucial computing support from all WLCG partners is acknowledged gratefully, in particular from CERN, the ATLAS Tier-1 facilities at TRIUMF (Canada), NDGF (Denmark, Norway, Sweden), CC-IN2P3 (France), KIT/GridKA (Germany), INFN-CNAF (Italy), NL-T1 (Netherlands), PIC (Spain), ASGC (Taiwan), RAL (UK), and BNL (USA), the Tier-2 facilities worldwide, and large non-WLCG resource providers. Major contributors of computing resources are listed in Ref. [79]
Mmwave Coverage Extension Using Reconfigurable Intelligent Surfaces in Indoor Dense Spaces
No full text2023 IEEE International Conference on Communications, ICC 2023 -- 28 May 2023 through 1 June 2023 -- 193943In this work, we consider the deployment of reconfigurable intelligent surfaces (RISs) to extend the coverage of a millimeter-wave (mmWave) network in indoor dense spaces. We first integrate RIS into ray-tracing simulations to realistically capture the propagation characteristics, then formulate a non-convex optimization problem that minimizes the number of RISs under rate constraints. We propose a feasible point pursuit and successive convex approximation-based algorithm, which solves the problem by jointly selecting the RIS locations, optimizing the RIS phase-shifts, and allocating time resources to user equipments (UEs). The numerical results demonstrate substantial coverage extension by using at least four RISs, and a data rate of 130 Mbit/s is guaranteed for UEs in the considered area of an airplane cabin. © 2023 IEEE.Horizon 2020; Electronic Components and Systems for European Leadership, ECSEL: 87612
Search for Resonant Wz Production in the Fully Leptonic Final State in Proton–proton Collisions at √s=13 Tev With the Atlas Detector
No full textA search for a WZ resonance, in the fully leptonic final state (electrons or muons), is performed using 139 fb - 1 of data collected at a centre-of-mass energy of 13 TeV by the ATLAS detector at the Large Hadron Collider. The results are interpreted in terms of a singly charged Higgs boson of the Georgi–Machacek model, produced by WZ fusion, and of a Heavy Vector Triplet, with the resonance produced by WZ fusion or the Drell–Yan process. No significant excess over the Standard Model prediction is observed and limits are set on the production cross-section times branching ratio as a function of the resonance mass for these processes. © 2023, The Author(s).IN2P3-CNRS; 2014-2021; SCI/013; U.S. Department of Energy, USDOE; Alexander von Humboldt-Stiftung, AvH; CRC Health Group, CRC: 21/SCI/017; Canarie; H2020 Marie Skłodowska-Curie Actions, MSCA; Multiple Sclerosis Scientific Research Foundation, MSSRF; CERN; Compute Canada; Göran Gustafssons Stiftelser; Natural Sciences and Engineering Research Council of Canada, NSERC; National Research Council Canada, NRC; Canada Foundation for Innovation, CFI; Science and Technology Facilities Council, STFC; Leverhulme Trust; European Research Council, ERC; European Cooperation in Science and Technology, COST; Australian Research Council, ARC; National Stroke Foundation, NSF; Neurosurgical Research Foundation, NRF; Helmholtz-Gemeinschaft, HGF; Minerva Foundation; Deutsche Forschungsgemeinschaft, DFG; Agence Nationale de la Recherche, ANR; Japan Society for the Promotion of Science, KAKEN; Ministry of Education, Culture, Sports, Science and Technology, MEXT; Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung, SNF; Danmarks Grundforskningsfond, DNRF; Fundação de Amparo à Pesquisa do Estado de São Paulo, FAPESP; National Natural Science Foundation of China, NSFC; Ministerstvo Školství, Mládeže a Tělovýchovy, MŠMT; Fundação para a Ciência e a Tecnologia, FCT; Bundesministerium für Bildung und Forschung, BMBF; Chinese Academy of Sciences, CAS; Austrian Science Fund, FWF; Generalitat de Catalunya; Ministry of Science and Technology of the People's Republic of China, MOST; Agencia Nacional de Promoción Científica y Tecnológica, ANPCyT; Nederlandse Organisatie voor Wetenschappelijk Onderzoek, NWO; Bundesministerium für Wissenschaft, Forschung und Wirtschaft, BMWFW; Conselho Nacional de Desenvolvimento Científico e Tecnológico, CNPq; Nella and Leon Benoziyo Center for Neurological Diseases, Weizmann Institute of Science; Israel Science Foundation, ISF; Instituto Nazionale di Fisica Nucleare, INFN; Narodowe Centrum Nauki, NCN; Javna Agencija za Raziskovalno Dejavnost RS, ARRS; Ministarstvo Prosvete, Nauke i Tehnološkog Razvoja, MPNTR; Ministerio de Ciencia e Innovación, MICINN; Centre National pour la Recherche Scientifique et Technique, CNRST; Staatssekretariat für Bildung, Forschung und Innovation, SBFI; Horizon 2020; British Columbia Knowledge Development Fund, BCKDF; European Regional Development Fund, ERDF; Defence Science Institute, DSI; Narodowa Agencja Wymiany Akademickiej, NAWA; Institutul de Fizică Atomică, IFA; Agencia Nacional de Investigación y Desarrollo, ANID; Royal Society of South Australia, RSSA; Irish Rugby Football Union, IRFUWe thank CERN for the very successful operation of the LHC, as well as the support staff from our institutions without whom ATLAS could not be operated efficiently. We acknowledge the support of ANPCyT, Argentina; YerPhI, Armenia; ARC, Australia; BMWFW and FWF, Austria; ANAS, Azerbaijan; CNPq and FAPESP, Brazil; NSERC, NRC and CFI, Canada; CERN; ANID, Chile; CAS, MOST and NSFC, China; Minciencias, Colombia; MEYS CR, Czech Republic; DNRF and DNSRC, Denmark; IN2P3-CNRS and CEA-DRF/IRFU, France; SRNSFG, Georgia; BMBF, HGF and MPG, Germany; GSRI, Greece; RGC and Hong Kong SAR, China; ISF and Benoziyo Center, Israel; INFN, Italy; MEXT and JSPS, Japan; CNRST, Morocco; NWO, Netherlands; RCN, Norway; MEiN, Poland; FCT, Portugal; MNE/IFA, Romania; MESTD, Serbia; MSSR, Slovakia; ARRS and MIZŠ, Slovenia; DSI/NRF, South Africa; MICINN, Spain; SRC and Wallenberg Foundation, Sweden; SERI, SNSF and Cantons of Bern and Geneva, Switzerland; MOST, Taiwan; TENMAK, Türkiye; STFC, United Kingdom; DOE and NSF, United States of America. In addition, individual groups and members have received support from BCKDF, CANARIE, Compute Canada and CRC, Canada; PRIMUS 21/SCI/017 and UNCE SCI/013, Czech Republic; COST, ERC, ERDF, Horizon 2020 and Marie Skłodowska-Curie Actions, European Union; Investissements d’Avenir Labex, Investissements d’Avenir Idex and ANR, France; DFG and AvH Foundation, Germany; Herakleitos, Thales and Aristeia programmes co-financed by EU-ESF and the Greek NSRF, Greece; BSF-NSF and MINERVA, Israel; Norwegian Financial Mechanism 2014-2021, Norway; NCN and NAWA, Poland; La Caixa Banking Foundation, CERCA Programme Generalitat de Catalunya and PROMETEO and GenT Programmes Generalitat Valenciana, Spain; Göran Gustafssons Stiftelse, Sweden; The Royal Society and Leverhulme Trust, United Kingdom. The crucial computing support from all WLCG partners is acknowledged gratefully, in particular from CERN, the ATLAS Tier-1 facilities at TRIUMF (Canada), NDGF (Denmark, Norway, Sweden), CC-IN2P3 (France), KIT/GridKA (Germany), INFN-CNAF (Italy), NL-T1 (Netherlands), PIC (Spain), ASGC (Taiwan), RAL (UK) and BNL (USA), the Tier-2 facilities worldwide and large non-WLCG resource providers. Major contributors of computing resources are listed in Ref. []
Search for Pairs of Muons With Small Displacements in Pp Collisions at S=13 Tev With the Atlas Detector
No full textA search for new phenomena giving rise to pairs of opposite electrically charged muons with impact parameters in the millimeter range is presented, using 139 fb−1 of s=13 TeV pp collision data from the ATLAS detector at the LHC. The search targets the gap in coverage between existing searches targeting final states with leptons with large displacement and prompt leptons. No significant excess over the background expectation is observed and exclusion limits are set on the mass of long-lived scalar supersymmetric muon-partners (smuons) with much lower lifetimes than previously targeted by displaced muon searches. Smuon lifetimes down to 1 ps are excluded for a smuon mass of 100 GeV, and smuon masses up to 520 GeV are excluded for a proper lifetime of 10 ps, at 95% confidence level. Finally, model-independent limits are set on the contribution from new phenomena to the signal-region yields. © 2023 The Author(s)IN2P3-CNRS; CC-IN2P3; SCI/013; U.S. Department of Energy, USDOE; Alexander von Humboldt-Stiftung, AvH; Alabama Space Grant Consortium, ASGC; Brookhaven National Laboratory, BNL; CRC Health Group, CRC: 21/SCI/017; Canarie; Karlsruhe Institute of Technology, KIT; H2020 Marie Skłodowska-Curie Actions, MSCA; Multiple Sclerosis Scientific Research Foundation, MSSRF; CERN; Compute Canada; Göran Gustafssons Stiftelser; Natural Sciences and Engineering Research Council of Canada, NSERC; National Research Council Canada, NRC; Canada Foundation for Innovation, CFI; Science and Technology Facilities Council, STFC; Leverhulme Trust; European Research Council, ERC; European Cooperation in Science and Technology, COST; Australian Research Council, ARC; National Stroke Foundation, NSF; Neurosurgical Research Foundation, NRF; Helmholtz-Gemeinschaft, HGF; Minerva Foundation; Deutsche Forschungsgemeinschaft, DFG; Agence Nationale de la Recherche, ANR; Japan Society for the Promotion of Science, KAKEN; Ministry of Education, Culture, Sports, Science and Technology, MEXT; Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung, SNF; Danmarks Grundforskningsfond, DNRF; Fundação de Amparo à Pesquisa do Estado de São Paulo, FAPESP; National Natural Science Foundation of China, NSFC; Ministerstvo Školství, Mládeže a Tělovýchovy, MŠMT; Fundação para a Ciência e a Tecnologia, FCT; Bundesministerium für Bildung und Forschung, BMBF; Chinese Academy of Sciences, CAS; Austrian Science Fund, FWF; Generalitat de Catalunya; Ministry of Science and Technology of the People's Republic of China, MOST; Agencia Nacional de Promoción Científica y Tecnológica, ANPCyT; Nederlandse Organisatie voor Wetenschappelijk Onderzoek, NWO; Bundesministerium für Wissenschaft, Forschung und Wirtschaft, BMWFW; Conselho Nacional de Desenvolvimento Científico e Tecnológico, CNPq; Nella and Leon Benoziyo Center for Neurological Diseases, Weizmann Institute of Science; Israel Science Foundation, ISF; Instituto Nazionale di Fisica Nucleare, INFN; Narodowe Centrum Nauki, NCN; Javna Agencija za Raziskovalno Dejavnost RS, ARRS; Ministarstvo Prosvete, Nauke i Tehnološkog Razvoja, MPNTR; Ministerio de Ciencia e Innovación, MICINN; Centre National pour la Recherche Scientifique et Technique, CNRST; Staatssekretariat für Bildung, Forschung und Innovation, SBFI; Horizon 2020; British Columbia Knowledge Development Fund, BCKDF; European Regional Development Fund, ERDF; Defence Science Institute, DSI; Narodowa Agencja Wymiany Akademickiej, NAWA; Institutul de Fizică Atomică, IFA; Agencia Nacional de Investigación y Desarrollo, ANID; Royal Society of South Australia, RSSA; Irish Rugby Football Union, IRF
Unit Cell Calculations Under Fully Characterized Stress States
No full textThe 3rd BEYOND 2023: Computational Science, Mathematical Modeling and Engineering Conference TOBB University of Economics and Technology, Ankara-Turkey, 19-20 October 2023The available numerical methods for conducting finite element unit cell calculations under predefined stress states typically constrain the most general stress state to a single shear stress component superimposed on three normal stress components. This study represents an advancement in the field, expanding upon the current state of the art to enable the exploration of unit cell behavior under the most intricate stress states, encompassing three shear and three normal stress components [1]. The proposed methodology has been implemented within the commercial finite element software ABAQUS. Three-dimensional cubic unit cells, containing either a void or a particle at their center and subjected to various stress states, were analyzed. The results of these simulations demonstrate that the developed method offers both accuracy and computational efficiency. Moreover, simulations conducted on voided unit cells reveal that ductile failure demonstrates anisotropic behavior, with anisotropy becoming increasingly pronounced under the influence of shear loads