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 46 for “"Response Spectrum"”.
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Inelastic response spectrum design procedures for steel frames.
Thesis. 1976. M.S.--Massachusetts Institute of Technology. Dept. of Civil Engineering.
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A study of seismic response of rotating machines subjected to multi-component base excitation
… presence of earthquake induced base motions. The response spectrum methods, which are now commonly used for calculating seismic design response of civil structures, cannot be used as such for calculating the design response of rotating machines. In this thesis, a response spectrum method which can …
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Analysis of the dynamic behaviour of the hangingwall beam during a seismic event
… objective of this study is to investigate the response of the isolated hangingwall beam during a seismic event. The study is particularly concerned with the global, resonant behaviour of the hangingwall and local shear or crushing failure of the rock at the shear fractures is not considered. A …
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A Neural Network-Based Methodology for Generating Spectrum -Compatible Earthquake Accelerograms
… methodology for generating artificial earthquake spectrum compatible accelerograms is proposed using the learning capabilities of neural networks to develop the knowledge of the inverse mapping directly from the response spectra to earthquake accelerograms. A two-stage approach is used. In the …
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Stochastic and seismic design response of linear and nonlinear structures
… calculating the stochastic and seismic design response of linear and nonlinear structures are presented. For linear structures, two approaches are developed: (1) the modified mode displacement approach for classically as well as non-classically damped structures, and (2) the generalized force …
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Dynamic Soil-Structure Interaction
… provides a method for a simple extension of response-spectrum procedures in seismic building analysis to include dynamic soil-structure interaction. The analysis utilizes soil impedance functions for a structural foundation. Most of the computational results refer to a rigid mat foundation. …
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Study of base isolation systems
… tension cross bracing is used to compare the response of both fixed base and base isolated schemes to severe earthquake excitations. Techniques for modeling the superstructure and the isolation system are also described. Elastic time-history analyses were carried out using comprehensive finite …
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Seismic Response of Low -Rise Shear Wall Structures With Flexible Diaphragms
… analysis (PCA) of computed inelastic dynamic responses. The method can consider variations in the design response spectrum and gives reasonably good estimates for use for preliminary design of the structure. (Abstract shortened by UMI.).
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Hilbert -Huang -Transform Based Modelling and Simulation of Nonstationary Processes and Applications to Earthquake Engineering
… to generation of Uniform Hazard Earthquake Response Spectrum and Ground Motions. A record-based methodology is proposed and demonstrated by an example at Los Angeles. The resulting UHRS compare well with those of USGS and SAC. The method does not rely on theories or empirical models, such as …
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Cost-Savings of Implementing Site-Specific Ground Motion Response Analysis in Design of Mississippi Embayment Bridges
… and a site-specific ground motion response analysis (SSGMRA) were conducted for a bridge site in Monette, Arkansas. The SSGMRA indicated the design acceleration response spectrum determined using the American Association of State Highway and Transportation Officials (AASHTO) general …
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Seismic Response of Light Attachments to Buildings
… method is proposed to compute the maximum response of light secondary systems attached to buildings subjected to earthquakes. The method is derived by considering that a secondary system and its supporting primary structure form a single assembled system, and by applying a modified version …
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Exact modal synthesis methods for seismic analysis of primary and multiply supported secondary systems
… approach for the calculation of the system response for any forcing function . For seismic analysis of combined primary and secondary structures, such as a main structure supporting piping or other auxiliary system, the combined structure is divided into two substructures. The …
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Estimation of Non-Linear Seismic Site Effects for Deep Deposits of the Mississippi Embayment
… hazard maps to develop site specific recommended response spectrum. The coefficients are developed for 30 m thick soil profile and do not account for the depth of the soil column. A suite of ground motion time histories are developed that in sum result in the same hazard level as USGS hazard maps. …
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Numerical modelling of reinforced concrete bridge pier under artificially generated earthquake time-histories
… (AGETH) fitting to a Eurocode 8 (EC8) response spectrum are randomly generated using SIMQKE software and the average generated spectrum compares well with the EC8 one. Two Finite element (FE) smeared crack models, named Multi-crack and Craft, are well validated against experimental data …
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Redesign and shock analysis of HALIFAX class frigate gas turbine uptake structure
… intention was to use the modal-based design response spectrum method to assess shock resistance. However, due to excessive stresses in the original model and in all subsequent modifications using this method, the less-rigorous base acceleration method was primarily used.
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Seismic Performance Comparison of a Fixed-Base Versus a Base-Isolated Office Building
… phase, each structure is designed using modal response spectrum analysis in ETABS. In the analysis phase, nonlinear time history analyses at DBE and MCE levels are conducted in PERFORM-3D to obtain the related floor accelerations and interstory drifts. Finally, in the performance assessment …
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Development of a Comprehensive Linear Response History Analysis Procedure for Seismic Load Analysis
… the parameters required to perform linear response history analysis according to Chapter 16 of the American Standard ASCE 7-10. A careful analysis is presented about the selection of ground motions using real records and using artificial records generated such that their response spectrum …
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Seismic Response of Structures with Added Viscoelastic Dampers
… energy dissipation systems. To examine the response reducing effectiveness of these dampers, it is necessary that engineers are able to conduct response analysis of structures installed with added dampers accurately and efficiently. The main objective of this work, therefore, is to develop …
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Επιρροή της παραμορφωσιμότητας των πλακών στη στατιστική και δυναμική συμπεριφορά πολυόρορφων κτιρίων
… MODE SUPERPOSITION ANALYSIS WAS CARRIED OUT. THE RESPONSE SPECTRUM USED WAS THE ONE OF WHICH THE EUROCODE NO 8 PROPOSES.
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Structural Analyses of Wind Turbine Tower for 3 kW Horizontal Axis Wind Turbine
… mode shapes of the tower. Using the results, the response spectrum analysis and the transient dynamic analysis, which are based on the modal superposition method, were performed in order to see the structure's response for earthquakes that are likely to happen at the wind turbine installation …
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