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Thermal Stress Calculations Using Enhanced Green's Function Considering Temperature-dependent Material Properties
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 Title & Authors
Thermal Stress Calculations Using Enhanced Green's Function Considering Temperature-dependent Material Properties
Han, Tae-Song; Huh, Nam-Su; Jeon, Hyun-Ik; Ha, Seung-Woo; Cho, Sun-Young;
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 Abstract
We propose an enhanced Green's function approach to predict thermal stresses by considering temperature-dependent material properties. We introduce three correction factors for the maximum stress, the time taken to reach maximum stress, and the time required to attain steady state based on the Green's function results for each temperature. The proposed approach considers temperature-dependent material properties using correction factors, which are defined as polynomial expressions with respect to temperatures based on Green's functions, that we obtain from finite-element (FE) analyses at each temperature. We verify the proposed approach by performing detailed FE analyses on thermal transients. The Green's functions predicted by the proposed approach are in good agreement with those obtained from FE analyses for all temperatures. Moreover, the thermal stresses predicted using the proposed approach are also in good agreement with the FE results, and the proposed approach provides better predictions than the conventional Green's function approach using constant, time-independent material properties.
 Keywords
Green's function;Fatigue damage;Temperature-dependent material property;Thermal stress analysis;
 Language
Korean
 Cited by
 References
1.
Griesbach, T. J., Riccardella, P. C., Gosselin, S. R., 1991, Application of Fatigue Monitoring to the Evaluation of Pressurizer Surge Lines, Nuclear Engineering and Design, 129:2 163-176. crossref(new window)

2.
Aufort, P., Bimont, G., Chau, T. H., Fournier, I., Morilhat, P., Souchois, T., Cordier, G., 1991, On Line Fatiguemeter: A Large Experiment in French Nuclear Plants, Nuclear Engineering and Design, 129:2 177-184. crossref(new window)

3.
Heliot, J., Fritz, R., 1989, Framatome Operating Transients Monitoring System Used for Equipment Mechanical Surveillance, International Journal of Pressure Vessels and Piping, 40:3 247-258. crossref(new window)

4.
Gilman, T., Gray, M., Rudolph, J., Heinz, B., 2015, Fatigue Monitoring and Assessment: Different Approaches Combined for Lifetime Extension Challenges, Proceedings of the ASME Pressure Vessels and Piping Conference, PVP2015-45659.

5.
Koo, G. H., Kwon, J. J., Kim W. J., 2009, Green's Function Method with Consideration of Temperature Dependent Material Properties for Fatigue Monitoring of Nuclear Power Plants, International Journal of Pressure Vessels and Piping, 86:2 187-195. crossref(new window)

6.
Zhang, H., Xiong, Y., Nie, C., Xie, D., Sun, K., 2012, A Methodology for Online Fatigue Monitoring with Consideration of Temperature- Dependent Material Properties using Artificial Parameter Method, ASME Journal of Pressure Vessel Technology, 134:1 011201-1-6. crossref(new window)

7.
Ko, H. O., Jhung, M. J., Choi, J. B., 2014, Development of Green's Function Approach Considering Temperature-Dependent Material Properties and Its Application, Nuclear Engineering and Technology, 46:1 101-108. crossref(new window)

8.
ABAQUS, 2011, ABAQUS/Standard User's Manual Version 6.11-1, Dassault Systemes.

9.
ASME, 2007, ASME Boiler & Pressure Vessel Code, Section II, Part D, American Society of Mechanical Engineers, U.S.A.