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A Coupled Peridynamics Model for the Ablation and Plastic Fracture Simulation of Reactor Pressure Vessels
Yonggang Zheng1,*, Hanbo Zhang1, Jingyan Li1, Hui Li2, Hongfei Ye1, Hongwu Zhang1
1 State Key Laboratory of Structural Analysis, Optimization and CAE Software for Industrial Equipment, Department of
Engineering Mechanics, Faculty of Vehicle Engineering and Mechanics, Dalian University of Technology, Dalian, 116024,
China
2 Science and Technology on Reactor System Design Technology Laboratory, Nuclear Power Institute of China, Chengdu,
610200, China
* Corresponding Author: Yonggang Zheng. Email:
The International Conference on Computational & Experimental Engineering and Sciences 2023, 25(1), 1-2. https://doi.org/10.32604/icces.2023.010050
Abstract
The reactor pressure vessels (RPV), a typical kind of axisymmetric structures, usually serve under high
temperature and pressure conditions. The numerical analysis of the mechanical behaviors of these
structures plays a dominant role for their structural design, advanced manufacture and safety assessment
in practical engineering applications[1-2]. However, the extremely conditions bring great challenges for the
numerical analysis of structures undergo ablation, plastic, damage and even fracture during an accident[3].
Based on the superior performance of peridynamics model in predicting fracture behaviors [4-7], a coupled
axisymmetric non-ordinary state-based peridynamics (CA-NOSB-PD) model is proposed in this work to
predict the ablation, plastic and fracture behaviors of metals. In this model, the governing equations of
axisymmetric thermo-mechanical problems are derived based on the separation of the deformations along
the in- and out-plane directions. A temperature-associated criterion is developed to determine the ablation
evolution. Three kinds of moving boundary models are proposed to handle the varying geometries during
the ablation process, including laser, contact and penetration ablation. The Lemaitre’s damage model is
incorporated into the CA-NOSB-PD model to effectively describe the damage behaviors. A damageassociated criterion is further proposed to determine the crack propagation. Finally, numerical simulations
demonstrate that the proposed CA-NOSB-PD model can effectively and accurately capture the plastic
response and predict the crack propagation of RPVs under extreme thermal loadings.
Keywords
Cite This Article
APA Style
Zheng, Y., Zhang, H., Li, J., Li, H., Ye, H. et al. (2023). A coupled peridynamics model for the ablation and plastic fracture simulation of reactor pressure vessels. The International Conference on Computational & Experimental Engineering and Sciences, 25(1), 1-2. https://doi.org/10.32604/icces.2023.010050
Vancouver Style
Zheng Y, Zhang H, Li J, Li H, Ye H, Zhang H. A coupled peridynamics model for the ablation and plastic fracture simulation of reactor pressure vessels. Int Conf Comput Exp Eng Sciences . 2023;25(1):1-2 https://doi.org/10.32604/icces.2023.010050
IEEE Style
Y. Zheng, H. Zhang, J. Li, H. Li, H. Ye, and H. Zhang "A Coupled Peridynamics Model for the Ablation and Plastic Fracture Simulation of Reactor Pressure Vessels," Int. Conf. Comput. Exp. Eng. Sciences , vol. 25, no. 1, pp. 1-2. 2023. https://doi.org/10.32604/icces.2023.010050