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Peridynamic Simulation of Pellet-Clad Mechanical Interaction in Nuclear Fuel Rods
Qiqing Liu1, Yin Yu1, Y.L. Hu1,*
1 Aerospace Structure Research Center, School of Aeronautics and Astronautics, Shanghai Jiao Tong University, Shanghai,
200240, China
* Corresponding Author: Y.L. Hu. Email:
The International Conference on Computational & Experimental Engineering and Sciences 2023, 27(3), 1-1. https://doi.org/10.32604/icces.2023.09220
Abstract
The thermomechanical response and potential cracking in nuclear fuel rods are extremely important for
nuclear safety analysis. The Pellet-Clad Mechanical Interaction (PCMI) is a significant factor for the
thermomechanical behaviors of pellet and clad. This study presents a PCMI model based on ordinary statebased peridynamic (OSB-PD) theory, which considering the heat transfer through the gap and contact heat
transfer between pellet and clad. The two-dimensional (2D) models are constructed through irregular nonuniform discretization. The pellet model includes the random variability of the critical stretch of each bond
based on normal distribution. The contact model with non-uniform discretization is proposed in this paper,
and its accuracy is validated against the Finite Element Method (FEM) results. Subsequently, the behavior
of PCMI and crack patterns of fuel pellet are studied at different power levels. Also, the role of friction
coefficient between pellet and clad on the pellet cracking is explored with a constant power level. The results
show that the thermomechanical response and damage possibility of clad increase with the power level raise
up, as well as the pellet damage. The pellet-clad friction has an important influence on the pellet crack
distribution, and the number of cracks is positively correlated with the friction coefficient.
Keywords
Cite This Article
APA Style
Liu, Q., Yu, Y., Hu, Y. (2023). Peridynamic simulation of pellet-clad mechanical interaction in nuclear fuel rods. The International Conference on Computational & Experimental Engineering and Sciences, 27(3), 1-1. https://doi.org/10.32604/icces.2023.09220
Vancouver Style
Liu Q, Yu Y, Hu Y. Peridynamic simulation of pellet-clad mechanical interaction in nuclear fuel rods. Int Conf Comput Exp Eng Sciences . 2023;27(3):1-1 https://doi.org/10.32604/icces.2023.09220
IEEE Style
Q. Liu, Y. Yu, and Y. Hu "Peridynamic Simulation of Pellet-Clad Mechanical Interaction in Nuclear Fuel Rods," Int. Conf. Comput. Exp. Eng. Sciences , vol. 27, no. 3, pp. 1-1. 2023. https://doi.org/10.32604/icces.2023.09220