Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 148 for “"Time history"”.
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Seismic Performance and Damage Risk of Modular CLT Housing Using Nonlinear Time History Analysis
… using OpenSees to perform nonlinear static and time history analyses. The Multiple Stripe Analysis procedure was used to derive the conditional probability of collapse fragility curves and interstory drift distributions, which, along with generic damage fragilities and seismic hazard curves, …
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Time history analysis of axial forces (Pass Through Forces) at joints in a braced frame
… Each scenario will be analysed in detail, a time history analysis will be used to find precise values under earthquake loading. The results are compared with two traditional methods of finding pass through forces, and the best approach is identified.
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A Comparison of Optimized Nonlinear Time History Analysis and the Equivalent Lateral Forces Method for Brace Design
… frames (BRBF's). This procedure uses nonlinear time history analysis and a formal optimization algorithm. The time history analysis includes an elasto-plastic model for the braces. The optimization algorithm is a genetic algorithm. This procedure is referred to throughout the thesis as the …
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Study of base isolation systems
… the isolation system are also described. Elastic time-history analyses were carried out using comprehensive finite element structural analysis software package SAP200. Time history analysis was conducted for the 1940 El Centro earthquake. Response spectrum analysis was employed to investigate the …
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Master-mode set of turbulent 3D channel flow
… master-mode-set is a subset of these modes, the time-history of which uniquely determines the time history of the entire turbulent flow provided that this flow is developed. In the present work the existence of the master-mode-set is demonstrated numerically for turbulent channel flow. The …
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Base isolation case study
… is modeled using SAP2000 structural program. The time history of Northridge earthquake is used as a seismic forcing function of the structure. The base isolator is designed by using the principle of bilinear modeling. Therefore, the base isolation system is analyzed using the non-linear time …
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Improving the vibrational performance of wood floor systems
… plates. By con1paring natural frequency, time-history, and power density predictions with experimental results, it is shown that the model can be used to predict the vibratory behavior of wood floor systems constructed With either solid-sawn joists, I-Joists, or parallel-chard-trusses. …
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Approximating the Seismic Amplification Effects Experienced by Solar Towers Mounted on the Rooftops of Low-Rise Industrial Buildings
… 7-05 amplification factors, this thesis conducts timehistory analyses of three theoretical solar towers mounted on the roof of a case study building. The time history analyses are conducted in the finite element computer modeling program SAP 2000 using 30 historical ground motion records of …
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Application of the cepstrum technique to location of acoustic sources in the presence of a reflective surface
… signal is preserved. The echo of the original time history is removed by an advanced signal processing technique, called Cepstrum analysis. This technique is successfully applied to remove the contaminating effect of echoes in the measured time history. The work described is divided into …
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A Case Study on Medium and High Rise Timber Buildings
… tested rigid model at the BLWTL, and a time history analysis is performed. Following the time history analysis, decomposition of the wind components is conducted and a reduction factor is applied to the resonant component. A modified time history response is reapplied to the building and …
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Seismic Design Studies of Low-Rise Steel Frames
… was determined by performing inelastic time-history analyses.
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Finite element analysis of time dependent settlements around pile structures
… external load are investigated. The inclusion of time history is also evaluated.
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Static and Dynamic Analyses of a Long-Span Cable-Stayed Bridge with Corroded Cables
… load was applied on the deck to investigate the time-history response of the mid-span in the horizontal, vertical and torsional directions, and of the tower top in the horizontal direction. Moreover, frequency analysis was performed on the time-history response, and coupled motions at certain …
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Modal pushover analysis for high-rise buildings
… analysis. The procedures and equations for time history analysis, modal analysis, pushover analysis and modal pushover analysis are discussed in detail. Then an 8-story height model and a 16-story height model are established for analysis. The pushover analysis is conducted for each …
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Homogenization of a Cracked Poroelastic Medium - Numerical calculation of the coefficients and damage
… The resulting model is able to reproduce any time-history of strain, and an evolution of the homogenized coe cients can be obtained from this time-history, unlike in the linear case, bifurcation phenomena can be observed for the damage problem.
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Large deformations of thin plates subjected to impulsive loading
… 3 and 12 plate thicknesses: and the deflection time history was measured using a light interference technique. While the deflection-time history was being recorded. the impulse was simultaneously being measured by means of a ballistic pendulum upon which the plates were attached. The impulse was …
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Calling Up the Dead
… few hours of January 1, 2000. The themes of time, history, and the reactions toward the new millennium (positive, negative, indifferent) of a variety of cultures are addressed. Each of the six major continents has a story, along with its cultural perspective, delivered by narrators both young …
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Numerical analyses of long carbon fiber reinforced concrete panels exposed to dynamic loading
… under impact. As a consequence, both the force time history and deflection time history at failure were obtained for each case. These results were compared together. Then, a series of tests were conducted to compare the blast resistance of panels constructed with either conventional reinforced …
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An experimental investigation of large-scale structures in supersonic reattaching shear flows
Time-resolved, planar imaging was employed to study the spatial organization of large-scale structures within the shear layers, at reattachment, and in the wake region of a supersonic base flow. Single-pulse side and end views were obtained at several streamwise locations to characterize the …
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