Дисертації з теми "Nonlinear site response analysis"
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Jeong, Seokho. "Topographic amplification of seismic motion including nonlinear response." Diss., Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/50325.
Повний текст джерелаEshun, Kow Okyere. "Quantification of the Effects of Soil Uncertainties on Nonlinear Site Response Analysis: Brute Force Monte Carlo Approach." University of Akron / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=akron1367510751.
Повний текст джерелаSchaedlich, Mirko. "Nonlinear transient structural response analysis." Thesis, University of Southampton, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.438667.
Повний текст джерелаKarbassi, A. A. "Nonlinear response analysis of guyed masts." Thesis, University of Westminster, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.376451.
Повний текст джерелаLessi, Cheimariou Angeliki. "Optimal treatment of nonlinear site response through a set of novel methodologies." Thesis, Imperial College London, 2014. http://hdl.handle.net/10044/1/30818.
Повний текст джерелаWu, Chunquan. "Fault zone damage, nonlinear site response, and dynamic triggering associated with seismic waves." Diss., Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/41143.
Повний текст джерелаFerreira, Janito Vaqueiro. "Dynamic response analysis of structures with nonlinear components." Thesis, Imperial College London, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.299871.
Повний текст джерелаKasinos, Stavros. "Seismic response analysis of linear and nonlinear secondary structures." Thesis, Loughborough University, 2018. https://dspace.lboro.ac.uk/2134/33728.
Повний текст джерелаMahmoodi, Seyed Nima. "Nonlinear vibration and frequency response analysis of nanomechanical cantilever beams." Connect to this title online, 2007. http://etd.lib.clemson.edu/documents/1193080354/.
Повний текст джерелаSweitzer, Karl Albert. "Random vibration response statistics for fatigue analysis of nonlinear structures." Thesis, University of Southampton, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.427343.
Повний текст джерелаLester, Alanna Paige. "An Examination of Site Response in Columbia, South Carolina: Sensitivity of Site Response to "Rock" Input Motion and the Utility of Vs(30)." Thesis, Virginia Tech, 2005. http://hdl.handle.net/10919/33467.
Повний текст джерелаMaster of Science
Teng, Thanat Sae. "In-situ shear wave measurement and ground response analysis for developing site-dependent response spectra in Macau." Thesis, University of Macau, 2009. http://umaclib3.umac.mo/record=b2099641.
Повний текст джерелаMotamed, Maryam. "Effects of Site Response on the Correlation Structure of Ground Motion Residuals." Thesis, Virginia Tech, 2014. http://hdl.handle.net/10919/25333.
Повний текст джерелаMaster of Science
Alves, Fernandes Vinicius. "Numerical analysis of nonlinear soil behavior and heterogeneity effects on railway track response." Thesis, Châtenay-Malabry, Ecole centrale de Paris, 2014. http://www.theses.fr/2014ECAP0055/document.
Повний текст джерелаAn increasing demand for railway transportation is observed in many countries around the world. Achieving higher network capacity requires the evaluation of the existing structure regarding the required traffic, speed and axle load, as well as the reduction of maintenance interventions. A higher track performance in terms of these metrics can be achieved by enhanced design standards and predictive tools accounting for the whole structure’s life span.Within this context, this thesis aims to provide a global framework for combining geotechnical perspective and numerical modeling for the railway infrastructure. A rational approach for railway track modeling is proposed. It is composed by three main aspects: (i) railway track dynamics, (ii) probabilistic analysis and (iii) geomaterials’ non linear behavior. This approach allows assessing the track behavior during different instants of its life span. The first step of this thesis is the development of a dynamic numerical model of the railway track for both probabilistic and non linear analysis. For this purpose, the Finite Element method in time domain is chosen as general modeling framework. A 2D planestrain model with a modified width is used in this thesis, the out-of-plane width being calibrated from 3D static analysis. The advantages and drawbacks of such methodology are discussed in the light of the representativeness of the in-plane stress field and associated computational cost for probabilistic analysis. A loading methodology for reducing spurious wave generation is also discussed and implemented. With the developed model, the track structural response and the crossed influence of speed and subgrade stiffness are first analyzed under linear elasticity hypothesis.The influence of track properties variability in the track stiffness measurement is discussed in the second part of this thesis. Spatial variations are introduced by considering the rigidity of each track layer as an invariant scalar random field. The first-order marginal probability distributions are calibrated from statistical analysis of in situ measurements. By considering different theoretical correlation structures, the crossed influence of the discrete sleeper support and the input correlation length on the track stiffness field is highlighted. In order to verify the importance of each input parameter in the track stiffness’ variability, a global sensitivity analysis is conducted for different track configurations. It is shown that track stiffness variations are primarily caused by variations of subgrade stiffness and possible variations of rail pad stiffness. Furthermore, the importance of geomaterials’ non linear behavior is discussed in the last part of the thesis. A suitable framework for the description of geomaterials’ behavior under cyclic loading, for a large range of stress paths, is provided by a fully elastoplastic multimechanism model. This approach is well adapted for assessing the track behavior during the so-called “conditioning phase”, or the the first cycles when high track settlements are observed and materials cumulate high plastic strains. The model parameters are calibrated from triaxial test results available in the literature for different track materials (ballast, interlayer, subgrade soil). The model is able to capture the main mechanisms acting during the conditioning phase: densification and increase in stiffness of the different materials by accumulation of plastic strains. The load transfer mechanisms and the stress-strain response of the materials are then analyzed. Different stress-strain paths and plastic strains are observed in the ballast layer according to the position of the control point relative to the sleepers. The load speed influence on track permanent settlement and ballast stress-strain response is also studied. Finally, the influence of both interlayer and subgrade behavior on the track response is assessed via a parametric analysis
Kapoor, Hitesh. "Nonlinear Dynamic Response of Flexible Membrane Structures to Blast Loads." Thesis, Virginia Tech, 2005. http://hdl.handle.net/10919/41238.
Повний текст джерелаMaster of Science
Silwal, Baikuntha. "An Investigation of the Beam-Column and the Finite-Element Formulations for Analyzing Geometrically Nonlinear Thermal Response of Plane Frames." OpenSIUC, 2013. https://opensiuc.lib.siu.edu/theses/1160.
Повний текст джерелаLi, Wei. "Nonlinear effects in ground motion simulations: modeling variability, parametric uncertainty and implications in structural performance predictions." Diss., Georgia Institute of Technology, 2010. http://hdl.handle.net/1853/34658.
Повний текст джерелаHarting, Nina [Verfasser], Ulrike [Akademischer Betreuer] Krewer, and Uwe [Akademischer Betreuer] Schröder. "Nonlinear Frequency Response Analysis of Lithium-Ion Batteries / Nina Harting ; Ulrike Krewer, Uwe Schröder." Braunschweig : Technische Universität Braunschweig, 2019. http://d-nb.info/119454620X/34.
Повний текст джерелаSheikh, Md Neaz. "Simplified analysis of earthquake site response with particular application to low and moderate seismicity regions." Thesis, Hong Kong : University of Hong Kong, 2001. http://sunzi.lib.hku.hk/hkuto/record.jsp?B2353008x.
Повний текст джерелаDe, Jager Charl. "A critical appraisal of existing models for nonlinear finite element analysis of reinforced concrete response." Thesis, Stellenbosch : Stellenbosch University, 2012. http://hdl.handle.net/10019.1/20052.
Повний текст джерелаENGLISH ABSTRACT: This study entails the appraisal of the constitutive models available for the non linear finite element analysis of reinforced concrete, using the DIANA finite element package and following generally accepted guidelines for non linear finite element analyses. The constitutive models considered are plasticity and total strain based (fixed and rotating crack) models. The appraisal consists of the analysis of various experiments performed on reinforced concrete beams that are governed by compressive, shear and tensile dominated failures. The investigation is not limited to the accuracy of the results obtained using these models but also of the consistency of the results obtained with regard to various mesh types and sizes, as well as a study of the individual influence of several material parameters. The intention of the study was to provide the reader with an indication of the performance capacity (accuracy and consistency) of the available constitutive models, where the notion of the use of the results obtained from non linear finite element analyses for design purposes is considered. The results obtained were varied. The models performed reasonably well in the compressive and tension dominated studies, with the importance of accurate material parameters being emphasized especially for the more advanced cementitious materials investigated. The total strain rotating crack model also showed a proclivity of simulating incorrect failure modes as well as exhibiting reluctance towards stress redistribution. All models used for the shear dominated study yielded mostly inaccurate and inconsistent results, but it was found that the four node quadrilateral element with selective reduced integration performed the best. The plasticity model did not capture shear failure well, and convergence was often not attained. The constant shear retention factor of the total strain fixed crack model was found to yield more detailed response curves for the smaller mesh sizes. The results of the tension dominated beams inspired more confidence in the models as quite accurate values were attained, especially by the plasticity model used. The ability of the available models to simulate realistic structural behaviour under various failure modes is very limited, as is evident from the results obtained. The development of a more advanced and robust model is required, which can provide consistently accurate results and failure modes, and even ‘anticipate’ potential failure modes not considered by the user.
Degirmenci, Can. "Dynamic Pull Analysis For Estimating The Seismic Response." Master's thesis, METU, 2006. http://etd.lib.metu.edu.tr/upload/12607833/index.pdf.
Повний текст джерелаDynamic Pull Analysis&rdquo
for estimating the seismic response of multi degree of freedom (MDOF) systems. The method is tested on a six-story reinforced concrete frame and a twelve-story reinforced concrete frame that are designed according to the regulations of TS-500 (2000) and TEC (1997).
Leung, Colin. "SENSITIVITY OF SEISMIC RESPONSE OF A 12 STORY REINFORCED CONCRETE BUILDING TO VARYING MATERIAL PROPERTIES." DigitalCommons@CalPoly, 2011. https://digitalcommons.calpoly.edu/theses/681.
Повний текст джерелаScarpato, Alessandro. "Linear and nonlinear analysis of the acoustic response of perforated plates traversed by a bias flow." Thesis, Châtenay-Malabry, Ecole centrale de Paris, 2014. http://www.theses.fr/2014ECAP0038/document.
Повний текст джерелаThermo-acoustic instabilities are of primary concern in combustion chambers for a wide range of industrial applications, from domestic boiler to gas turbines or rocket engines. They are the consequence of a resonant coupling between the flame dynamics and the acoustic modes of the combustor, and can result in strong vibrations, early aging of combustor components and structural damage. The physical mechanisms involved are complex and difficult to model, thus thermo-acoustic oscillations are not easily predictable at the design stage of a combustor. In many combustors, passive dampers are implemented to increase the acoustic energy dissipation of the system and to hinder detrimental flame-acoustics interactions. In the present work, passive damping systems based on perforated screens backed by a resonant cavity and traversed by a bias flow are investigated. The main objectives are: (i) to improve and simplify the design of these dampers by maximizing their acoustic absorption properties in the linear regime, (ii) to analyze the effect of the sound wave amplitude on the acoustic response of these systems and (iii) to develop models capable of capturing absorption at high oscillation amplitudes. First, two interesting asymptotic regimes are identified where the plate operates at low and high Strouhal numbers respectively. In these regimes the design of a damper maximizing absorption is greatly simplified, since the choice of the optimal bias flow velocity and back cavity size can be decoupled. It is shown that at low Strouhal numbers the damper behaves as a quarter-wave resonator, and features a wide absorption bandwidth. At high Strouhal numbers, the system operates as a Helmholtz resonator, featuring shorter optimal back cavity sizes but narrower absorption bandwidths. These predictions are compared to measurements in a dedicated experimental setup for the different operating regimes identified. The dependence of the acoustic properties of a perforated plate on the forcing amplitude is then examined by means of direct numerical simulations. It is shown that transition from linear to nonlinear regimes occurs when the acoustic velocity amplitude in the orifice is comparable to the mean bias flow velocity. At high amplitudes, periodic flow reversal is observed within the perforation, vortex rings are alternatively shed upstream and downstream of the hole and convected away at a velocity which is increasing with the forcing amplitude. These mechanisms greatly influence the acoustic absorption of the perforate in the nonlinear regime. Two novel models capturing this nonlinear response are then inferred based on an analysis of the vortex trajectory (VC model), and on a quasi-steady description of the flow (IDF model). Their predictions are finally compared to measurements conducted in an impedance tube, and to results from numerical simulations. The results obtained in this work can be used to ease the design of robust dampers capable of operating in harsh environments with high sound levels, such as those found during self-sustained thermo-acoustic instabilities
Vasilescu, Adrian. "Analysis of geometrically nonlinear and softening response of thin structures by a new facet shell element." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape4/PQDD_0018/MQ57743.pdf.
Повний текст джерелаMathison, Steve Richard. "Nonlinear analysis for the response and failure of compression- loaded angle-ply laminates with a hole." Thesis, Virginia Tech, 1987. http://hdl.handle.net/10919/45819.
Повний текст джерелаThe objective of this study was to determine the effect of nonlinear material behavior on the response and failure of unnotched and notched angle-ply laminates under uniaxial compressive loading. The endochronic theory was chosen as the constitutive theory to model the AS4/3502 graphite-epoxy material system.
Three-dimensional finite element analysis incorporating the endochronic theory was used to determine the stresses and strains in the laminates. An incremental/iterative initial strain algorithm was used in the finite element program. To increase computational efficiency, a 180° rotational symmetry relationship was utilized and the finite element program was vectorized to run on a super computer. Laminate response was compared to experiment revealing excellent agreement for both the unnotched and notched angle-ply laminates. Predicted stresses in the region of the hole were examined and are presented, comparing linear elastic analysis to the inelastic endochronic theory analysis.
A failure analysis of the unnotched and notched laminates was performed using the quadratic tensor polynomial. Predicted fracture loads compared well with experiment for the unnotched laminates, but were very conservative in comparison with experiments for the notched laminates.
Master of Science
Vasilescu, Adrian Carleton University Dissertation Engineering Civil and Environmental. "Analysis of geometrically nonlinear and softening response of thin structures by a new Facet Shell Element." Ottawa, 2000.
Знайти повний текст джерелаMaldonado, Gustavo Omar. "Stochastic response of single degree of freedom hysteretic oscillators." Thesis, Virginia Tech, 1987. http://hdl.handle.net/10919/45804.
Повний текст джерелаMaster of Science
Cabas, Mijares Ashly Margot. "Improvements to the Assessment of Site-Specific Seismic Hazards." Diss., Virginia Tech, 2016. http://hdl.handle.net/10919/82352.
Повний текст джерелаPh. D.
Hata, Misako. "Non linear tolerance analysis by response surface methodology." Ohio : Ohio University, 2001. http://www.ohiolink.edu/etd/view.cgi?ohiou1173897314.
Повний текст джерелаArefi, Mohammad Jawad. "Dynamic Characteristics and Evaluation of Ground Response for Sands with Non-Plastic Fines." Thesis, University of Canterbury. Civil & Natural Resources Engineering, 2014. http://hdl.handle.net/10092/9173.
Повний текст джерелаWee, Boon Yu. "Analysis of mechanisms of chromosome restoration in response to a site-specific double-strand break in fission yeast." Thesis, University of Oxford, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.432262.
Повний текст джерелаGrassi, Sabrina. "Characterization of active tectonic structures of the Etna volcano, through geophysical surveys, analysis of site response and deformation." Doctoral thesis, Università di Catania, 2017. http://hdl.handle.net/10761/3902.
Повний текст джерелаKadyk, Thomas Verfasser], and Kai [Akademischer Betreuer] [Sundmacher. "Nonlinear frequency response analysis for the diagnosis of polymer electrolyte membrane fuel cells / Thomas Kadyk. Betreuer: Kai Sundmacher." Magdeburg : Universitätsbibliothek, 2012. http://d-nb.info/1053914431/34.
Повний текст джерелаEifert, Joseph E. "Predictive modeling of the aerobic growth of Staphylococcus aureus 196E using a nonlinear model and response surface analysis /." This resource online, 1994. http://scholar.lib.vt.edu/theses/available/etd-06062008-164508/.
Повний текст джерелаHardyniec, Andrew B. "An Investigation of the Behavior of Structural Systems with Modeling Uncertainties." Diss., Virginia Tech, 2014. http://hdl.handle.net/10919/56635.
Повний текст джерелаPh. D.
Citipitioglu, Ahmet Muhtar. "Development and assessment of response and strength models for bolted steel connections using refined nonlinear 3D finite element analysis." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/31691.
Повний текст джерелаCommittee Chair: Haj-Ali, Rami; Committee Co-Chair: Leon, Roberto; Committee Co-Chair: White, Donald; Committee Member: DesRoches, Reginald; Committee Member: Gentry, Russell. Part of the SMARTech Electronic Thesis and Dissertation Collection.
Gunay, Mehmet Selim. "An Equivalent Linearization Procedure For Seismic Response Prediction Of Mdof Systems." Phd thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/3/12609447/index.pdf.
Повний текст джерелаImamovic, Ismar. "Ultimate load limit analysis of steel structures accounting for nonlinear behaviour of connections." Thesis, Compiègne, 2017. http://www.theses.fr/2017COMP2373/document.
Повний текст джерелаThis thesis deals with the ultimate load limit analysis of steel frame structures. The steel frame structure has a very ductile response and a large potential to dissipate energy, which is crucial in the case of earthquakes. The ductility in the response of the structure comes from the behavior of the material itself and the behavior of the semi-rigid structural connections. The semi-rigid connections between beams and columns can significantly influence the response of the structure, sometimes up to 30%. In this thesis, we propose a methodology for modeling steel frame structures with included connection behavior. The idea is to model the behavior of the structural connections by the beam elements positioned in the corners of the steel frame structure. Other members of the steel frame structure, steel beams, and columns, will be modeled with nonlinear beam elements. This research consists of two parts. The first part deals with the behavior of the structural steel connections. In the second part, we present the development of the nonlinear beam element capable of representing the ductile behavior of steel structural elements, beams and columns. In the first part of the thesis, we define constitutive parameters identification procedure for the coupled plasticity-damage model with eighteen unknowns. This constitutive model is very robust and capable of representing a wide range of problems. The identification procedure was used in the preparation of experimental tests for three different types of structural steel connections. The experimental tests have been performed for two load cases. In the first, the load was applied in one direction with both the loading and unloading cycles. From the experimental measurements, we have concluded that the response of the experimental structure can be represented by the plasticity model only because no significant change in the elastic response throughout the loading program was observed. Therefore, we have chosen an elastoplastic geometrically exact beam to describe connection behavior. The hardening response of the beam is governed by bilinear law, and the softening response is governed by nonlinear exponential law. The identification of the parameters has been successfully done with fifteen unknown parameters identified. The two types of the experimental structures were also exposed to the cyclic loading. Measured experimental data shows complex connection behavior that cannot be described by the plasticity model alone. Namely, after changing load direction stiffness of the connection decreases. This suggests that the damage model should be incorporated in the constitutive law for the connections behavior as well. Therefore, we propose a new coupled plasticity-damage model capable of representing the loss in the stiffness of the connection with the changing of the load direction. At the end of this part, we also give the constitutive parameters identification for the proposed model. The second part of the thesis deals with the theoretical formulation and numerical implementation of the elastoplastic geometrically exact beam. The hardening response of the beam includes interaction between stress resultant section forces (N, T and M), and the softening response of the beam, which is governed by the nonlinear law. This type of the beam element is capable of representing the ductile behavior of a steel frame structure, and it takes into account second order theory effects. Performed numerical simulations show that the proposed geometrically nonlinear beam element is very robust and is able to provide a more precise limit load analysis of steel frame structures. By using proposed methodology for modeling steel structures, we are able to obtain the real distribution of section forces, including their redistribution caused by forming of the hinges and the connections behavior
Turner, Travis Lee. "Thermomechanical Response of Shape Memory Alloy Hybrid Composites." Diss., Virginia Tech, 2000. http://hdl.handle.net/10919/29771.
Повний текст джерелаPh. D.
Singleton, Michael David. "Nonlinear Hierarchical Models for Longitudinal Experimental Infection Studies." UKnowledge, 2015. http://uknowledge.uky.edu/epb_etds/7.
Повний текст джерелаMoghaddasi, Kuchaksarai Masoud. "Probabilistic Quantification of the Effects of Soil-Shallow Foundation-Structure Interaction on Seismic Structural Response." Thesis, University of Canterbury. Civil and Natural Resources, 2012. http://hdl.handle.net/10092/8446.
Повний текст джерелаEifert, Joseph D. "Predictive modeling of the aerobic growth of Staphylococcus aureus 196E using a nonlinear model and response surface analysis." Diss., Virginia Tech, 1994. http://hdl.handle.net/10919/27970.
Повний текст джерелаPh. D.
Arslan, Hakan. "A Numerical Study On Response Factors For Steel Wall-frame Systems." Master's thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/2/12610811/index.pdf.
Повний текст джерелаOguz, Sermin. "Evaluation Of Pushover Analysis Procedures For Frame Structures." Master's thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/12606047/index.pdf.
Повний текст джерелаexact'
results obtained from nonlinear dynamic analysis. The primary observations from the study showed that the accuracy of the pushover results depends strongly on the load path, properties of the structure and the characteristics of the ground motion. Pushover analyses were performed by both DRAIN-2DX and SAP2000. Similar pushover results were obtained from the two different softwares employed in the study provided that similar approach is used in modeling the nonlinear properties of members as well as their structural features. The accuracy of approximate procedures utilised to estimate target displacement was also studied on frame structures. The accuracy of the predictions was observed to depend on the approximations involved in the theory of the procedures, structural properties and ground motion characteristics.
Ricci, Jaime. "Investigating environmental response to Afro-Arabian flood basalt volcanism with elemental analysis of oligocene carbonate sediments from Odp Leg 115 site 709, Indian Ocean." Thesis, University of Iowa, 2012. https://ir.uiowa.edu/etd/3374.
Повний текст джерелаLevel, Pascal. "Contribution à l'élaboration d'une stratégie de calcul en dynamique des grandes structures : Développement et intégration des méthodes de réanalyse modale." Valenciennes, 1989. https://ged.uphf.fr/nuxeo/site/esupversions/ddd3277b-ac0d-4f10-a671-4f9e5d5af490.
Повний текст джерелаCornelio, Tony Justin. "Effect of infill panels on the seismic response of a typical R.C. frame." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2011. http://amslaurea.unibo.it/2868/.
Повний текст джерелаAzarhoushang, Azin. "Dynamic response of fixed offshore platforms to environmental loads." Thesis, Curtin University, 2010. http://hdl.handle.net/20.500.11937/135.
Повний текст джерелаMoharrami, Gargari Mohammadreza. "Development of Novel Computational Simulation Tools to Capture the Hysteretic Response and Failure of Reinforced Concrete Structures under Seismic Loads." Diss., Virginia Tech, 2016. http://hdl.handle.net/10919/71864.
Повний текст джерелаPh. D.
Jarrett, Jordan Alesa. "Performance Assessment of Seismic Resistant Steel Structures." Diss., Virginia Tech, 2013. http://hdl.handle.net/10919/24773.
Повний текст джерелаPh. D.