Effect of Variation of the Systemic Parameters on the Structural Response of Single Degree of Freedom Systems Subjected to Incremental Dynamic Analysis

This thesis presents the results of a study of the effect of variations of systemic parameters on the structural response of single degree of freedom systems subjected to Incremental Dynamic Analysis. The systemic parameters are mass, stiffness, damping, yield strength and geometric stiffness. Each...

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Main Author: De, Samrat
Other Authors: Civil Engineering
Format: Others
Published: Virginia Tech 2011
Subjects:
Online Access:http://hdl.handle.net/10919/9730
http://scholar.lib.vt.edu/theses/available/etd-02192004-232758
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spelling ndltd-VTETD-oai-vtechworks.lib.vt.edu-10919-97302020-09-29T05:44:05Z Effect of Variation of the Systemic Parameters on the Structural Response of Single Degree of Freedom Systems Subjected to Incremental Dynamic Analysis De, Samrat Civil Engineering Charney, Finley A. Martin, James R. II Plaut, Raymond H. rescaling dispersion systemic parameters Incremental dynamic analysis This thesis presents the results of a study of the effect of variations of systemic parameters on the structural response of single degree of freedom systems subjected to Incremental Dynamic Analysis. The systemic parameters are mass, stiffness, damping, yield strength and geometric stiffness. Each of these parameters was varied one at a time while the other values were kept constant. For each variation of parameters a set of single-record IDA curves was obtained. Five to six ground motions were used for this study to generate the single-record IDA curves. These ground motions were scaled prior to their application on the structure. The scaling factor was based on the spectral acceleration at the fundamental frequency of the structure at 5% of critical damping. The scale factor is affected if the system parameters are changed. An important issue for this study was whether to persist with scaling corresponding to the median value from the range of the values of the parameter or to update the scaling according to the system. Based on some tests using both methods, the median scaling approach was found to be more suitable. The IDA curves for variation of parameters were then investigated to identify any trends that may help in qualitatively predicting the response of a system relative to another system. The response was measured by the peak displacement and the maximum base shear of the system. A clear trend was identified when the damping or the yield strength was varied. However, no definite trend was observed when the material stiffness or the geometric stiffness of the system was varied. Master of Science 2011-08-06T14:46:18Z 2011-08-06T14:46:18Z 2003-09-01 2004-02-19 2005-03-10 2004-03-10 Thesis etd-02192004-232758 http://hdl.handle.net/10919/9730 http://scholar.lib.vt.edu/theses/available/etd-02192004-232758 Thesis.pdf Front.pdf In Copyright http://rightsstatements.org/vocab/InC/1.0/ ETD application/pdf application/pdf Virginia Tech
collection NDLTD
format Others
sources NDLTD
topic rescaling
dispersion
systemic parameters
Incremental dynamic analysis
spellingShingle rescaling
dispersion
systemic parameters
Incremental dynamic analysis
De, Samrat
Effect of Variation of the Systemic Parameters on the Structural Response of Single Degree of Freedom Systems Subjected to Incremental Dynamic Analysis
description This thesis presents the results of a study of the effect of variations of systemic parameters on the structural response of single degree of freedom systems subjected to Incremental Dynamic Analysis. The systemic parameters are mass, stiffness, damping, yield strength and geometric stiffness. Each of these parameters was varied one at a time while the other values were kept constant. For each variation of parameters a set of single-record IDA curves was obtained. Five to six ground motions were used for this study to generate the single-record IDA curves. These ground motions were scaled prior to their application on the structure. The scaling factor was based on the spectral acceleration at the fundamental frequency of the structure at 5% of critical damping. The scale factor is affected if the system parameters are changed. An important issue for this study was whether to persist with scaling corresponding to the median value from the range of the values of the parameter or to update the scaling according to the system. Based on some tests using both methods, the median scaling approach was found to be more suitable. The IDA curves for variation of parameters were then investigated to identify any trends that may help in qualitatively predicting the response of a system relative to another system. The response was measured by the peak displacement and the maximum base shear of the system. A clear trend was identified when the damping or the yield strength was varied. However, no definite trend was observed when the material stiffness or the geometric stiffness of the system was varied. === Master of Science
author2 Civil Engineering
author_facet Civil Engineering
De, Samrat
author De, Samrat
author_sort De, Samrat
title Effect of Variation of the Systemic Parameters on the Structural Response of Single Degree of Freedom Systems Subjected to Incremental Dynamic Analysis
title_short Effect of Variation of the Systemic Parameters on the Structural Response of Single Degree of Freedom Systems Subjected to Incremental Dynamic Analysis
title_full Effect of Variation of the Systemic Parameters on the Structural Response of Single Degree of Freedom Systems Subjected to Incremental Dynamic Analysis
title_fullStr Effect of Variation of the Systemic Parameters on the Structural Response of Single Degree of Freedom Systems Subjected to Incremental Dynamic Analysis
title_full_unstemmed Effect of Variation of the Systemic Parameters on the Structural Response of Single Degree of Freedom Systems Subjected to Incremental Dynamic Analysis
title_sort effect of variation of the systemic parameters on the structural response of single degree of freedom systems subjected to incremental dynamic analysis
publisher Virginia Tech
publishDate 2011
url http://hdl.handle.net/10919/9730
http://scholar.lib.vt.edu/theses/available/etd-02192004-232758
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