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Rozprawy doktorskie na temat „LOAD DEFORMATION”

Autor: Grafiati

Data publikacji: 11 września 2023

Data aktualizacji: 25 lipca 2025

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1

Karsu, Burak. "The load deformation response of single bolt connections." Thesis, This resource online, 1995. http://scholar.lib.vt.edu/theses/available/etd-01242009-063304/.

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Molloy, Patrick Donal. "The load-deformation characteristics of steel-concrete sandwich construction." Thesis, Queen's University Belfast, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.317463.

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MOROTE, CARLOS HUGO SOTO. "STABILITY AND DEFORMATION OF SOIL SLOPES UNDER SEISMIC LOAD." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2006. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=9532@1.

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CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO<br>O comportamento sísmico de taludes tem sido um tópico de grande interesse da engenharia geotécnica nos últimos 40 anos. Durante este período, a prática da engenharia nesta área evoluiu do emprego de técnicas elementares para procedimentos numéricos bastante complexos. A abordagem mais simples é a análise pseudo-estática na qual o carregamento do terremoto é simulado por uma aceleração horizontal estática equivalente atuando na massa de solo deslizante, utilizando-se um procedimento de equilíbrio limite (método das fatias)

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4

Jakobsen, Bo. "In-situ studies of bulk deformation structures : static properties under load and dynamics during deformation /." Roskilde : Roskilde University, Department of Science, Systems and Models & Center for Fundamental Research, Metal Structures in Four Dimensions Materials Research Department, Risø National Laboratory, 2006. http://hdl.handle.net/1800/3059.

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McLaughlin, Kirsten Kathleen. "TEM diffraction analysis of the deformation underneath low load indentations." Thesis, University of Cambridge, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.613392.

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Goudie, K. "Experimental study of the gross deformation of tubular beams." Thesis, University of Manchester, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.380143.

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McMahon, Brendan. "Deformation mechanisms beneath shallow foundations." Thesis, University of Cambridge, 2013. https://www.repository.cam.ac.uk/handle/1810/244367.

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Shallow foundations can provide the most economical solution for supporting small-scale structures. The design approach is quite simple considering the ultimate bearing capacity and working-load settlement. Research has shown that settlement calculations, determined using a linear-elastic approach, usually govern the design but this approach is inappropriate because soil is highly non-linear, even at small strains. The result is that signifi cant discrepancies are observed between predicted and actual settlements. This uncertainty has seen the development of settlement-based approaches such as

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8

Friedman, Ross Aaron. "The dehydration of pharmaceutical hydrates under mechanical load." Diss., University of Iowa, 2014. https://ir.uiowa.edu/etd/3224.

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Nearly one-third of all pharmaceutical substances on the market are able to sorb water into their crystal lattices to form hydrates, which can often compromise stability during processing and/or storage[1]. The tendency of a hydrate to lose its water of crystallization during the manufacturing process of tablet compression is of particular concern to formulation scientists. The amount of water freed as a function of increasing compaction pressure can be explained by the mobility of water within the compact. The mobility of water is determined by the size and shape of the crystal lattice, the n

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9

O'Brien, Patrick Emmet. "Characterizing the Load-Deformation Behavior of Steel Deck Diaphragms using Past Test Data." Thesis, Virginia Tech, 2017. http://hdl.handle.net/10919/78679.

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Recent research has identified that current code level seismic demands used for diaphragm design are considerably lower than demands in real structures during a seismic event. However, historical data has shown that steel deck diaphragms, common to steel framed buildings, perform exceptionally well during earthquake events. A new alternative diaphragm design procedure in ASCE 7-16 increases diaphragm seismic demand to better represent expected demands. The resulting elastic design forces from this method are reduced by a diaphragm design force reduction factor, Rs, to account for the ductility

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10

Colin, Julie Anne. "Deformation History and Load Sequence Effects on Cumulative Fatigue Damage and Life Predictions." University of Toledo / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1260390033.

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11

Colin, Julie. "Deformation history and load sequence effects on cumulative fatigue damage and life predictions /." Connect to full text in OhioLINK ETD Center, 2009. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=toledo1260390033.

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12

Gibb, John Michael. "Evaluation of resistance to permanent deformation in the design of bituminous paving mixtures." Thesis, University of Nottingham, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.318643.

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13

Ssemakula, Hamzah. "Manufacturihng of heavy rings and large copper canisters by plastic deformation." Doctoral thesis, KTH, Production Engineering, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3682.

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<p>Plastic deformation processes transform material fromas-received state to products meeting certain requirements inproperties, microstructure and shape. To achieve thistransformation, the relationship between material response andprocess conditions should be understood. This is usuallycomplicated by the complex conditions describing the actualprocess. Numerous techniques including empirical, physical,analytical and numerical can be employed.</p><p>In this thesis, numerical technique supported by lab- andfull-scale experiments has been employed to analyse the formingparameters. The first part

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14

Albrecht, Felix. "Numerical modeling and simulation of the deformation of wood under an applied indentation load." Thesis, Uppsala universitet, Institutionen för fysik och astronomi, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-231914.

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15

Borges, RÃmulo Luiz. "Permanent deformation in asphalt mixtures from viscoplastic shift model and triaxial repeated load test." Universidade Federal do CearÃ, 2014. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=13192.

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FundaÃÃo Cearense de Apoio ao Desenvolvimento Cientifico e TecnolÃgico<br>Permanent deformation or rutting is a major distress in asphalt pavements. To predict permanent deformation of asphalt mixtures the dynamic creep test is often used in laboratory, with the result presented in terms of the so called flow number. However, for this work it was performed the triaxial repeated permanent deformation load test, a confined test that better represents field conditions. The models that incorporate the flow number do not represent the main zone of the dynamic creep test result, denoted secondary re

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16

Zhalehjoo, Negin. "Characterisation of the deformation behaviour of unbound granular materials using repeated load triaxial testing." Thesis, Federation University of Australia, 2018. http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/166953.

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Unbound Granular Materials (UGMs) are used in the base/subbase layers of flexible pavements for the majority of roads around the world. The deterioration of pavements increases with the increase of traffic loadings. To ensure the long-term performance and serviceability of pavement structures through a realistic design, the precise evaluation and comprehensive characterisation of the resilient and permanent deformation behaviour of pavement materials are essential. The present PhD study aims to investigate the characterisation of the resilient and permanent deformation behaviour of four road b

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17

Lodhi, Muhammad S. "RESPONSE ESTIMATION OF REINFORCED CONCRETE COLUMNS SUBJECTED TO LATERAL LOADS." The Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1269631164.

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18

Juchnevičius, Žilvinas. "Deformation and strength of a cyclically bent threaded connection." Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2012. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2012~D_20120206_165453-81433.

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Industry equipment such as pressure vessels, mining equipment, heat exchang-ers, steam generators and other structures are provided with bolted closures for the purpose of in-service inspection and maintenance of internal components. Threaded connections often experience variable cyclic loads due to temperature, inner pressure and variation in the deformation of connection fittings. Often, studs and screws are not only affected by an axial load, but also by bending moments. More sophisticated high-cycle and low-cycle durability calculation meth-odologies have been already developed for thread

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19

Srithar, Thillaikanagasabai. "Stress, deformation and flow analysis of oil sand masses under applied load and temperature changes." Thesis, University of British Columbia, 1989. http://hdl.handle.net/2429/28067.

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Stress and temperature changes in oil sand masses associated with oil recovery can give rise to stability and deformation problems. An analytical formulation is developed to analyze such kind of problems and incorporated in the finite element program 'CONOIL II’. Oil sand is a multiphase material, which can be analyzed as an equivalent two phase material; solid grains saturated with a single fluid phase, having an equivalent compressibility. The equivalent compressibility is obtained by combining the concepts of unsaturated soils with the gas laws and the gas-liquid interaction effects. Class

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20

Neuman, Tomáš. "Přívěs pro přepravu formulového vozu." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2011. http://www.nusl.cz/ntk/nusl-229871.

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This thesis deals with the conceptual design of a trailer for transportation of Formula car SAE and experimental vehicle Formula Ford. The design of the trailer is presented in the thesis in accordance with the legislation of the Czech Republic. The trailer dimensioning is desinged in view of the anticipated loads. The main task of the thesis is the strength test of the designed trailer.

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21

Rahman, Mohammad Shafiqur. "Characterising the Deformation Behaviour of Unbound Granular Materials in Pavement Structures." Doctoral thesis, KTH, Väg- och banteknik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-162277.

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Unbound granular materials (UGMs) used in the base and sub-base layers of flexible pavements play a significant role in the overall performance of the structure. Proper understanding and characterization of the deformation behaviour of UGMs in pavement structures are, therefore, vital for the design and maintenance of flexible pavements. In this study, the resilient deformation (RD) and the permanent deformation (PD) behaviour of UGMs were investigated for the better understanding and improved modelling of these deformation characteristics. The study is based on a series of repeated-load triax

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22

Raziq, Noor. "GPS structural deformation monitoring : the mid-height problem /." Connect to thesis, 2008. http://repository.unimelb.edu.au/10187/3340.

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GPS has been used to monitor engineering structures for a number of reasons. One important reason for monitoring high rise buildings (and other engineering structures) is their safety assessment in events of extreme loading, such as earthquakes and storms. Decisions must be made as soon as possible, whether to allow re-occupation of such buildings, or to assess them for further damage. The time required to reach such decisions is cost-critical, both for the building owner or manager and for the agency doing the assessment. Peak inter-storey drift ratio and detection of permanent damage are som

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23

NAKAMURA, Hikaru, Naoshi UEDA, Minoru KUNIEDA, and Ahmed KAMAL. "ASSESSMENT OF STRENGTHENING EFFECT ON RC BEAMS WITH UHP-SHCC." 日本コンクリート工学会, 2008. http://hdl.handle.net/2237/20917.

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Dareeju, Biyanvilage. "Performance evaluation of unsaturated rail track foundations under cyclic moving wheel load." Thesis, Queensland University of Technology, 2017. https://eprints.qut.edu.au/102697/4/Biyanvilage%2520Sampath%2520Sri%2520Sameera_Dareeju_Thesis.pdf.

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This thesis developed an alternative laboratory element testing method to evaluate the response of the unsaturated soils of rail track foundations under repeated moving wheel loadings. The novel laboratory testing method is more capable of producing the realistic strength-deformation characteristics of the unsaturated soils with the effects of principal stress axis rotation (PSAR), which can be used to redesign the conservative rail track guidelines.

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25

de, Falco Paolino. "Mechanisms of deformation and energy dissipation in antler and arthropod cuticle with bio-inspired investigations." Thesis, Queen Mary, University of London, 2018. http://qmro.qmul.ac.uk/xmlui/handle/123456789/54050.

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Bio-composite hierarchical materials have attracted the interest of the academic community operating in the field of bio-inspired materials for their outstanding mechanical properties achieved via lightweight structural designs. Antler and mantis shrimp's cuticle are extreme examples of materials naturally optimised to resist impacts and bear dynamic loading. Firstly, a class of finite-element fibril models was developed to explain the origin of heterogeneous fibrillar deformation and hysteresis from the nanostructure of antler. Results were compared to synchrotron X-ray data and demonstrated

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26

Armaleh, Sonia Hanna 1956. "ANALYSIS OF SINGLE AND GROUP PILES IN COHESIONLESS SOILS (BEARING CAPACITY, FINITE ELEMENT METHOD, LOAD-DEFORMATION, VERTICAL LOADING, SPACING)." Thesis, The University of Arizona, 1986. http://hdl.handle.net/10150/291192.

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Frost, Matthew W. "The performance of pavement foundations during construction." Thesis, Loughborough University, 2000. https://dspace.lboro.ac.uk/2134/11152.

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There is an impetus in the UK to move away from empirical pavement foundation design and the current method specification, towards an analytical design approach. For an analytical design approach to be adopted, the required performance properties of stiffness and resistance to permanent deformation of the foundation materials (sub grade and capping) need to be measured, both in the laboratory for design and in the field in order to ensure compliance. This thesis studies the influence of the sub grade on the constructability and performance of a series of full-scale pavement foundations. This h

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28

Muturi, Christopher. "Characterization of viscoelastic properties of an epoxy composite and simulation of time dependent deformation of an annulus seal under load." Thesis, KTH, Hållfasthetslära (Inst.), 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-176400.

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A new sealing stand-alone tool, i.e. CannSeal to produce a barrier packer or zonal isolation in oil/gas wells has been developed by a Norwegian company (AGR CannSeal AS). The tool allows injection of a fluid into the annulus between the production casing and the surroundings in an oil/gas well. After injection the fluid will solidify and form an annulus solid plug which will prevent/reduce axial flow in the annulus volume. During operation and testing of well integrity the plug may be subjected to high pressure gradients, e.g. 250 bar. AGR CannSeal has developed epoxy formulations for differen

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29

Paik, Kwang Jun. "Simulation of fluid-structure interaction for surface ships with linear/nonlinear deformations." Diss., University of Iowa, 2010. https://ir.uiowa.edu/etd/569.

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The present research develops a numerical fluid-structure interaction (FSI) code based on CFDShip-Iowa version 4, a general-purpose URANS/DES overset fluid solver. Linear and nonlinear FSI methods are developed to compute structural responses on surface ships or marine structures. The modal superposition transient analysis and the nonlinear FEM structure solver are used for small and large deformation FSI problems, respectively. The gluing method is applied to transfer the forces and displacements on non-matching grids for fluid and structure domains. The linear FEM solver is applied to deform

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30

Штефан, Т. О., та О. В. Величко. "Вплив способів закріплення стійок для перевезення важких вантажів на міцність конструкції". Thesis, Сумський державний університет, 2014. http://essuir.sumdu.edu.ua/handle/123456789/39286.

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Babadopulos, Lucas Feitosa de Albuquerque Lima. "A Contribution to couple aging to hot mix asphalt (HMA) mechanical characterization under load-induced damage." reponame:Repositório Institucional da UFC, 2014. http://www.repositorio.ufc.br/handle/riufc/11164.

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BABADOPULOS, L. F. A. L. A Contribution to couple aging to hot mix asphalt (HMA) mechanical characterization under load-induced damage. 2014. 139 f. Dissertação (Mestrado em Engenharia de Transportes) – Centro de Tecnologia, Universidade Federal do Ceará, Fortaleza, 2014.<br>Submitted by Marlene Sousa (mmarlene@ufc.br) on 2015-03-17T12:56:14Z No. of bitstreams: 1 2014_dis_lfalbabadopulos.pdf: 3908887 bytes, checksum: 5aa174295aabf02b82834d29dbed52a8 (MD5)<br>Approved for entry into archive by Marlene Sousa(mmarlene@ufc.br) on 2015-03-31T13:12:01Z (GMT) No. of bitstreams: 1 2014_dis_lfalbabadop

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Woldemikael, Biruk Worku. "Effects of cracking of coupling beams onhigh rise towers subjected to wind load." Thesis, KTH, Betongbyggnad, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-290589.

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In high rise towers, reinforced concrete elevator shafts with coupling beams are extensively used as a principal structural element to resist lateral loads. The lateral load resistance of the tower is dominantly dependent on the stiffness of the load-bearing walls, and coupling beams connecting them. In an interest to study the reduction in the stiffness of high rise tower due to cracking in the coupling beams, variability in the reinforcement content, concrete grade and the effect of joint flexibility at the beam-wall intersection, this master thesis presents the analytical and finite element

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33

Sartori, Julian [Verfasser], Martin S. [Gutachter] Fischer, Hartmut [Gutachter] Witte, and Tobias [Gutachter] Siebert. "The fibrous structure of the Achilles tendon enthesis in mice and its deformation under load / Julian Sartori ; Gutachter: Martin S. Fischer, Hartmut Witte, Tobias Siebert." Jena : Friedrich-Schiller-Universität Jena, 2020. http://d-nb.info/1227444443/34.

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Casalena, Lee. "Multimodal Nanoscale Characterization of Transformation and Deformation Mechanisms in Several Nickel Titanium Based Shape Memory Alloys." The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu1499568013015563.

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Pezeshky, Payam. "Distortional Static and Buckling Analysis of Wide Flange Steel Beams." Thesis, Université d'Ottawa / University of Ottawa, 2017. http://hdl.handle.net/10393/36074.

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Existing design provisions in design standards and conventional analysis methods for structural steel members are based on the simplifying kinematic Vlasov assumption that neglects cross-sectional distortional effects. While the non-distortional assumption can lead to reasonable predictions of beam static response and buckling strength in common situations, past work has shown the inadequacy of such assumption in a number of situations where it may lead to over-predicting the strength of the members. The present study thus develops a series of generalized theories/solutions for the static anal

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Seyis, Onder. "Development Of An Algorithm For Material Selection." Master's thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/12606020/index.pdf.

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Material selection is one of the major points that should be taken into account seriously in the engineering design stage. Each material has various properties such as mechanical, thermal, electrical, physical, environmental, optical and biological properties. However, it is a well known fact that only a limited number of design engineers have a thorough knowledge on all these properties of a specific material, which is planned to be used in the manufacturing of the product. Therefore, the design engineer should be guided in selecting the most suitable material. In the scope of this thesis, th

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Samarakkody, Dilrukshie. "Differential axial shortening in high rise buildings with concrete filled tube columns." Thesis, Queensland University of Technology, 2016. https://eprints.qut.edu.au/96417/1/Dilrukshie%20Induprabha_Samarakkody%20Arachchilage_Thesis.pdf.

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This research developed and applied a comprehensive technique to evaluate the Differential Axial Shortenings (DASs) in composite high rise buildings. The findings of this research will help to reduce the adverse effects of DASs and facilitate safer designs of buildings. A method, based on the vibration characteristics of the building, to update the initial predictions during the service stage of the building has also been developed and applied.

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Teklemariam, Daniel Mekonnen, and Bennie Hamunzala. "Design of Thick Concrete Beams : Using Non-Linear FEM." Thesis, KTH, Bro- och stålbyggnad, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-189141.

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The experimental studies performed on the behaviour of very thick concrete beams subjected to static loads have revealed that the shear mechanisms play an important role in the overall response and failure behaviour. The aim of this thesis is to recommend suitable design methods for thick concrete beams subjected to off-centre static concentrated load according Eurocode 2 by using non-linear finite element analysis (NLFEA). To achieve this task, Abaqus/Explicit has been used by employing constitutive material models to capture the material non-linearity and stiffness degradation of concrete. C

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Menegotto, Mauro Leandro. "Previsão da curva tensão-recalque de ensaios de placa em solo não saturado." Universidade de São Paulo, 2004. http://www.teses.usp.br/teses/disponiveis/18/18132/tde-23062008-143454/.

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Apresenta-se um método para a previsão da curva tensão-recalque a ser obtida em provas de carga em placa circular, instalada a diferentes profundidades e com vários diâmetros, para diversos níveis de sucção em solo não saturado. Também é proposto um procedimento para correção dos recalques medidos em ensaio com carregamento do tipo rápido, para a obtenção dos correspondentes recalques estabilizados de um ensaio lento. A previsão realizada apresenta resultados bastante próximos dos obtidos em provas de carga, verificando-se assim a aplicabilidade do método proposto para reproduzir o comportamen

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Rivera, Rojas Alfonso Jose. "Lateral response of stiff column-supported shallow foundations." Diss., Virginia Tech, 2019. http://hdl.handle.net/10919/100795.

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The mechanisms that control the lateral response of stiff column-supported shallow foundations, resulting from the application of horizontal load on shallow foundations supported by stiff columns, are uncertain. Stiff columns constructed in soft clayey soil have been used to support retaining walls and in such cases, the lateral thrust applied behind these geotechnical structures is a source of horizontal loading. For seismic events, stiff columns constructed in soft clayey soil have been used to support shallow foundations subjected to horizontal load coming from the upper structure of buildi

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41

Jing, Peng. "Etude de l'effet des fines et de la teneur en eau sur le comportement hydromécanique des matériaux granulaires." Thesis, Strasbourg, 2017. http://www.theses.fr/2017STRAD008/document.

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Les matériaux granulaires sont souvent utilisés dans les chaussées à faible trafic, pour la réalisation des couches d'assise non liées. L'objectif de la thèse est une meilleure compréhension du comportement hydromécanique des matériaux granulaires insaturés sous charge répétée en tenant compte des différents effets couplés: teneur en eau et teneur en fines. Une série d'essais triaxiaux à chargements répétés (TCR) est réalisée avec les différents échantillons de sable de Missillac remodelés à différentes teneurs en eau et en fines pour caractériser les comportements de déformation permanent et

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42

Alachaher, Abderrahim. "Abd : une nouvelle loi de comportement incrémentalement non linéaire et applications par la méthode des éléments finis." Université Joseph Fourier (Grenoble), 1994. http://www.theses.fr/1994GRE10136.

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Ce memoire presente une etude locale et numerique du comportement mecanique des geomateriaux. La premiere partie de ce memoire presente une synthese de quelques modeles utilises dans le cadre de la description du comportement des sols. Quelques aspects lies aux schemas d'integration et au temps de calcul ont ete degages. Ensuite, nous presentons une nouvelle loi de comportement incrementalement non-lineaire de type interpolation denommee abd, caracterisee par le sens de son ecriture qui permet d'exprimer directement la reponse incrementale si la sollicitation incrementale est completement defi

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Parry, A. R. "The deformation of hard materials under point loads." Thesis, University of Exeter, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.259813.

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Suits, Chris Allen. "DEFORMATION OF BEARING PADS WHILE UNDER SERVICE LOADS." OpenSIUC, 2013. https://opensiuc.lib.siu.edu/theses/1167.

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Bearing pads undergo deformation while under service loads of any bridge. The pad translates the load to the support structure, and allows for movement of the superstructure. The deformation of bearing pads is an important element to consider when designing both the super and sub structures of the bridge. The Federal Highway Administration provides a guide for the design of steel brigdes, and Step 6 of this guide covers the design of bearing pads. The purpose of this study is to analyze the deformation of bearing pads using a finite element analysis software. This study will analyze two sep

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Widarda, Dina Rubiana. "Longitudinal forces in continuously welded rails due to nonlinear track-bridge interaction for loading sequences." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2009. http://nbn-resolving.de/urn:nbn:de:bsz:14-ds-1238081328011-05497.

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The use of continuously welded rails (CWR) governs the longitudinal stress caused by seasonal temperature changes, bending of supporting structure and braking/accelerating due to passing trains. Those three loads have been regulated in Eurocode1 and accomplished by the national codes like DIN Fb-101 in Germany. An additional loading case identified and treated in this thesis is the load due to a change of the coupling stiffness in longitudinal direction between the track and bridge. This additional load occurs as a consequence of the employment of a nonlinear stiffness law which increases the

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Beaude, Nicolas. "Etude théorique et expérimentale du comportement élasto-plastique et de la localisation de la déformation dans les monocristaux." Paris 13, 1988. http://www.theses.fr/1988PA132005.

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Etude experimentale sur des monocristaux en superalliage à base de nickel soumis à des essais à chaud d'écrouissage cyclique à basse fréquence. Observation d'un phénomene d'instabilité plastique accompagné de la formation de lignes de glissement cristallographiques sur le fut de l'éprouvette. Modélisation du comportement élasto-plastique par une généralisation de la loi de schmid. L'extension de la loi de normalite permet de déterminer la direction de l'écoulement plastique et les systèmes actifs du glissement octaédrique. C'est la bifurcation locale de cette loi de comportement qui rend compt

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Bendaas, Mohamed. "Analyse et conception des structures textiles tendues." Grenoble INPG, 1994. http://www.theses.fr/1994INPG0121.

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Les structures textiles tendues sont generalement considerees comme instables. Leur instabilite depend de l'etat de contraintes dans la structure avant application des charges externes. De ce fait, un interet particulier est accorde a l'etude de l'equilibre de ces structures avant et apres application des chargements climatiques. Ce travail est divise en deux parties: ? dans la premiere partie, differents aspects de l'equivalence entre la membrane et un reseau de cables sont abordes. Une extension de la methode des densites de force est etablie pour tenir compte de la membrane orthotrope. La m

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Yun, Xiaoyou 1965. "Geomechanical behaviour of biaxially loaded rock." Thesis, McGill University, 2008. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=115913.

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The stress state at the boundary of any underground mine opening is that of plane stress. This planar state of stress can be simulated in laboratory by subjecting a cubic rock specimen to a biaxial loading condition. Thus, research on the behaviour of biaxially loaded rock is important for better understanding of the stability of mining fronts such as crown pillar skin, drift face or shaft floor.<br>The objective of this research is to study the geomechanical behaviour of biaxially loaded rock. Three rock types were selected, namely limestone, granite and sandstone.<br>The laboratory work was

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ZHOU, XIAO-WEI. "Contribution au comportement dynamique des materiaux metalliques : etude experimentale de l'alliage al-li en torsion et en compression, simulation numerique du processus de penetration a grande vitesse." Nantes, 1988. http://www.theses.fr/1988NANT2014.

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Etude experimentale sur les alliages al-li soumis a des essais de traction et de compression pour des vitesses de deformation comprises entre 10**(-4) et 310**(3) s**(-1) et de 10**(-3) a 210**(3) s**(-1) respectivement. Auparavant ces alliages ont ete traites thermiquement. Analyse de la sensibilite a la vitesse de deformation. Influence du mecanisme d'activation thermique sur le processus de deformation. Determination du mode de rupture. Analyse des facies de rupture pour les echantillons deformes en traction et de la formation des cellules de dislocation dans ceux deformes en compression. S

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Navrátil, Petr. "Objekt pro sportovní účely." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2013. http://www.nusl.cz/ntk/nusl-226045.

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The theme of this diploma thesis is design and check load-carrying steel structure of building for sport purposes in two variants. Building is situated in Holešov town. Primary emphasis is placed on purpose of this building and on her integration to the given locality. The steel structure is created by two objels, main (hall) and side part (admin. part). Both of this building have common east wall. Plan dimension of hall part is 40 on 40m and the highest point of this part is 15,9m height above ground. Admin. part is greated like frame with columns in 8x8m grid and 8m height. Overall height of

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