Nonlinear Seismic Correlation Analysis of the JNES/NUPEC Large-Scale Piping System Tests.
The Japan Nuclear Energy Safety Organization/Nuclear Power Engineering Corporation (JNES/NUPEC) large-scale piping test program has provided valuable new test data on high level seismic elasto-plastic behavior and failure modes for typical nuclear power plant piping systems. The component and piping system tests demonstrated the strain ratcheting behavior that is expected to occur when a pressurized pipe is subjected to cyclic seismic loading. Under a collaboration agreement between the US and Japan on seismic issues, the US Nuclear Regulatory Commission (NRC)/Brookhaven National Laboratory (BNL) performed a correlation analysis of the large-scale piping system tests using derailed state-of-the-art nonlinear finite element models. Techniques are introduced to develop material models that can closely match the test data. The shaking table motions are examined. The analytical results are assessed in terms of the overall system responses and the strain ratcheting behavior at an elbow. The paper concludes with the insights about the accuracy of the analytical methods for use in performance assessments of highly nonlinear piping systems under large seismic motions.
- Research Organization:
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- Sponsoring Organization:
- Nuclear Regulatory Commission/Non-Nureg
- DOE Contract Number:
- DE-AC02-98CH10886
- OSTI ID:
- 929356
- Report Number(s):
- BNL-80249-2008-CP; R&D Project: 15355; 401001060; TRN: US0803607
- Resource Relation:
- Conference: 2008 ASME Pressure Vessels and Piping Division Conference; Chicago, IL; 20080727 through 20080731
- Country of Publication:
- United States
- Language:
- English
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