Browsing by Author "Abhinav Gupta, Chair"
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- Artificial Intelligence Based Condition Monitoring of Nuclear Piping-Equipment Systems.(2021-11-19) Sandhu, Harleen Kaur; Abhinav Gupta, Chair; Kook Han, Member; Gnanamanikam Mahinthakumar, Member; Saran Srikanth Bodda, Member; Nam Dinh, Member
- A Bayesian Framework for Probabilistic Seismic Fragility Assessment of Structures.(2012-06-26) Tadinada, Sashi Kanth; Abhinav Gupta, Chair; Larry Stikeleather, Graduate School Representative; Vernon Matzen, Member; Mervyn Kowalsky, Member; M. Rahman, Member
- Development of a Risk Consistent Framework for Seismic Qualification of Equipment.(2017-02-01) Chatterjee, Payel; Abhinav Gupta, Chair; Murthy Guddati, Member; John Baugh, Member; Justin Post, Minor
- Flooding Fragility of Concrete Gravity Dam-Foundation System(2015-05-08) Sandhu, Harleen Kaur; Abhinav Gupta, Chair; M. Rahman, Member; Gnanamanikam Mahinthakumar, Member
- Modeling and Simulating Alkali-Silica Reaction in Concrete Structures.(2023-11-20) Aliyeva, Gunay Gina; Abhinav Gupta, Chair; Rudolf Seracino, Member; Giorgio Proestos, Member; Maria Avramova, Member; Yann Le Pape, External
- Multi-Hazard Risk Assessment of a Flood Defense Structure.(2017-11-30) BODDA, SARAN SRIKANTH; Abhinav Gupta, Chair; M. Rahman, Member; Gnanamanikam Mahinthakumar, Member
- Non-Classical Damping Properties and Modal Correlation Coefficient for Dynamic Analysis of Structures(2001-03-05) Bose, Mrinal Kanti; Abhinav Gupta, Chair; Ajaya Gupta, Member; David C. C. Tung, Member; Jim Nau, Member; Richard Kim, MemberThe seismic response of secondary systems depends, in addition to their uncoupled dynamic characteristics, on the interaction with primary structures supporting them. This dissertation presents a verification study of the formulations to evaluate the seismic response of non-classically damped building-piping systems by modal synthesis approach. The existing studies consider only simple representative primary-secondary systems. No real-life like coupled system such as building-piping was used in these studies. Further, the majority of simple systems considered in these studies do not represent realistic coupled systems with significant effect of non-classical damping as they have either high values of mass ratios or systems with detuned modes.In this dissertation, different configurations of simple representative systems as well as real-life like building-piping systems are considered. Responses obtained from modal superposition time history analyses as well as response spectrum analyses are compared with the corresponding responses obtained by Brookhaven National Laboratory from the direct integration time history analyses. Modal superposition time history analyses results and direct integration time history analyses results are almost identical. The mean and standard deviation of responses from response spectrum analyses are close to the corresponding values evaluated using direct integration time history analysis. In addition to the verification results, a detailed discussion is also presented on the significance of non-classical damping. It is shown that the effect of non-classical damping is significant in systems that have nearly tuned modes and sufficiently small values of modal mass ratios. It is also illustrated that composite modal damping is an alternate form of classical damping that can result in incorrect responses in non-classically damped systems. Possible reasons for numerical and modeling differences that can occur in real-life like building-piping system are identified and their effect on the dynamic characteristics of the coupled system is illustrated.In the response spectrum method, the maximum modal responses are combined using an appropriate formulation for the modal correlation coefficient. This dissertation presents a new formulation which is based on the observation that the response spectrum method is a design method such that the statistical values of responses evaluated from multiple time history analyses should be close to the corresponding values obtained from the response spectrum method. Results from a numerical study using several real earthquake records are used to develop the new formulation. Different expressions are proposed for combining modal responses that have same algebraic sign and for those that have opposite algebraic signs.
- Probabilistic Approaches for Multi-Hazard Risk Assessment of Structures and Systems.(2016-06-15) Kwag, Shinyoung; Abhinav Gupta, Chair; M. Rahman, Member; Mervyn Kowalsky, Member; Gnanamanikam Mahinthakumar, Member; Nam Dinh, Member
- Qualification of Electrical Substation Equipment subjected to Earthquake Excitation.(2013-11-01) Chatterjee, Payel; Abhinav Gupta, Chair; Vernon Matzen, Member; Murthy Guddati, Member
- Risk Informed Validation Framework Using Bayesian Approach.(2019-11-25) Bodda, Saran Srikanth; Abhinav Gupta, Chair; Nam Dinh, Graduate School Representative; Kook Han, Member; Brian Reich, Minor; Gnanamanikam Mahinthakumar, Member
- Scaling of Earthquake Ground Motions for Fragility Analysis of Piping Systems.(2014-11-24) Liu, Tiancong; Abhinav Gupta, Chair; James Nau, Member; M. Rahman, Member
- Seismic Fragility of Piping System.(2011-12-08) Ju, Bu-Seog; Abhinav Gupta, Chair; John Baugh, Member; Mervyn Kowalsky, Member; Vernon Matzen, Member
- Seismic Fragility of Piping Systems: Consideration of Cyclic Behavior and Closed-Form Relationship.(2019-11-20) Dubey, Ankit Ramanand; Abhinav Gupta, Chair; Murthy Guddati, Member; Mervyn Kowalsky, Member; Justin Post, Minor
- Seismic Probabilistic Fragility Assessment of Reinforced Concrete Shear Wall Structures in Nuclear Power Plants.(2012-12-19) Syed, Sammiuddin Quadri; Abhinav Gupta, Chair; Vernon Matzen, Member; M. Rahman, Member; Sami Rizkalla, Member; Gregory Buckner, Minor
- Seismic Response of Electrical Equipment in Nuclear Power Plants(2017-05-11) Singh, Sugandha; Abhinav Gupta, Chair; M. Rahman, Member; Mervyn Kowalsky, Member; Nam Dinh, Member
- Uncertainty Quantification and Propagation for External Hazard Probabilistic Risk Assessment.(2021-05-10) Vaishanav, Pragya; Abhinav Gupta, Chair; Murthy Guddati, Member; Gnanamanikam Mahinthakumar, Member; Nam Dinh, Member; Piyush Sabarwal, Technical Consultant
- Understanding the Behavior of a Post-Tension Rod Anchorage Mechanism in a Concrete Dam(2015-05-07) Compton, Brandon Thomas; Abhinav Gupta, Chair; Rudolf Seracino, Member; Mohammad Pour-Ghaz, Member
