Numerical simulation of creep rupture of a reactor pressure vessel in a severe hypothetical accident needs to perfectly take account of interactions between creep phenomena and damage. The continuous damage theory enables to formulate models strongly coupling elasto-visco-plasticity and damage. Such models have been implemented in various computer codes and, in particular, in ASTER at Electricite´ de France, CASTEM 2000 at Commissariat a` l’Energie Atomique and SYSTUS+® at SYSTUS International. The objective of this paper is to present briefly a validation study of the three different numerical implementations and to compare the coupled approach to an uncoupled one on an example of a cylinder of the program “RUPTHER,” under internal pressure and heated to a temperature of 700°C. [S0094-9930(00)01004-0]
Creep-Damage Analysis: Comparison Between Coupled and Uncoupled Models
Contributed by the Pressure Vessels and Piping Division for publication in the JOURNAL OF PRESSURE VESSEL TECHNOLOGY. Manuscript received by the PVP Division, May 31, 2000; revised manuscript received July 21, 2000. Technical Editor: S. Y. Zamrik.
Bhandari , S., Feral, X., Bergheau, J., Mottet, G., Dupas, P., and Nicolas, L. (July 21, 2000). "Creep-Damage Analysis: Comparison Between Coupled and Uncoupled Models ." ASME. J. Pressure Vessel Technol. November 2000; 122(4): 408–412. https://doi.org/10.1115/1.1310364
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