ML24085A237
| ML24085A237 | |
| Person / Time | |
|---|---|
| Issue date: | 03/12/2024 |
| From: | Office of Nuclear Regulatory Research |
| To: | |
| References | |
| Download: ML24085A237 (7) | |
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RIC 2024 Hybrid U.S. Nuclear Regulatory Commission 36th Annual Regulatory Information Conference MARCH 12-14, 2024 Bethesda North Marriott Hotel and Conference Center Rockville, Maryland
- nrcric2024 www.nrc.gov ADAPTING TO A CHANGING LANDSCAPE
RIC 2024 Hybrid U.S. Nuclear Regulatory Commission 36th Annual Regulatory Information Conference MARCH 12-14, 2024
- nrcric2024 www.nrc.gov ADAPTING TO A CHANGING LANDSCAPE Digital Exhibit 28 Demonstration of Response Spectrum Matching Using the Greedy Wavelet Method (GWM)
(1) GWM is fast, stable, and easy to use in developing seismic design acceleration time histories from design response spectra (RS)
(2) GWM helps ensure the sufficiency of the power spectral density (PSD) functions of the developed acceleration time histories Presented by Structural, Geotechnical, and Seismic Engineering Branch Division of Engineering, Office of Nuclear Regulatory Research, U.S. NRC
RIC 2024 Hybrid U.S. Nuclear Regulatory Commission 36th Annual Regulatory Information Conference MARCH 12-14, 2024
- nrcric2024 www.nrc.gov ADAPTING TO A CHANGING LANDSCAPE GWMs Origin and FutureFrom Research to Application
- The NRC staff developed GWM to meet a research need for hundreds of spectrally matched seismic acceleration time histories
Those time histories were used to estimate the uncertainties in in-structure RS
- GWMs computational advantages can be leveraged for seismic analysis and design of advanced nuclear reactors
Many advanced reactor designs are expected to use seismic time history analyses to simulate complex interactions of innovative systems, such as seismic isolation and water pools
RIC 2024 Hybrid U.S. Nuclear Regulatory Commission 36th Annual Regulatory Information Conference MARCH 12-14, 2024
- nrcric2024 www.nrc.gov ADAPTING TO A CHANGING LANDSCAPE 2023 Nie, Graizer, and Seber A greedy algorithm for wavelet-based time domain response spectrum matching, Nuclear Engineering and Design, 410(1123843);
https://doi.org/10.1016/j.nucengdes.2023.112384 RspMatch09 GWM Representative Wavelet-Based, Time Domain RS-Matching Methods
- GWM does not need to solve an optimization problem in each iteration
- GWM uses significantly fewer wavelets to achieve RS convergence (saving 99.5% for the RspMatch09 example)
- GWM helps achieve the sufficiency of the PSD functions of the developed acceleration time histories
- GWM provides interactive and powerful baseline correction tools through its graphical user interface (RspMatch09)
RIC 2024 Hybrid U.S. Nuclear Regulatory Commission 36th Annual Regulatory Information Conference MARCH 12-14, 2024
- nrcric2024 www.nrc.gov ADAPTING TO A CHANGING LANDSCAPE Text Input & Output vs Graphical User Interface Faster without saving images for animation
RIC 2024 Hybrid U.S. Nuclear Regulatory Commission 36th Annual Regulatory Information Conference MARCH 12-14, 2024
- nrcric2024 www.nrc.gov ADAPTING TO A CHANGING LANDSCAPE One Way to Achieve Both Power Sufficiency and RS Convergence Select an initial seed record Use target PSD to replace Fourier amplitudes Use GWM for RS matching FAS RS RS RS Smooth & broad Fourier amplitude spectra (FAS)
RIC 2024 Hybrid U.S. Nuclear Regulatory Commission 36th Annual Regulatory Information Conference MARCH 12-14, 2024
- nrcric2024 www.nrc.gov ADAPTING TO A CHANGING LANDSCAPE Digital Exhibit 28Demonstration of Response Spectrum Matching Using the Greedy Wavelet Method (GWM)
Thank you for checking out GWM!
Presented by JS Nie, Jose Pires, Laurel Bauer, Ryan Payne, Thomas Weaver, Vladimir Graizer, and Weijun Wang Structural, Geotechnical, and Seismic Engineering Branch Division of Engineering, Office of Nuclear Regulatory Research, U.S. NRC DE28 Coordinator Email: Jinsuo.nie@nrc.gov.