Zircaloy Plate Rolling Simulation with an Effective Strain-Rate-Dependent Stress-Updating Algorithm

Kong, Xiangwei; Yang, Hongyan; Ding, Shurong

doi:10.1515/ijnsns-2015-0077

Cited by 3 publications

(2 citation statements)

References 20 publications

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“…Hence, UMo/Zr monolithic fuel elements have a good application prospect in the future high flux research reactor (Gonzalez et al, 2015;Zhao et al, 2015) and advanced pressurized water reactor, because of its low neutron absorption cross section, good mechanical properties and corrosion resistance. The researches on the fabrication process and irradiation-induced behavior for UMo/Zr monolithic fuel elements have been implemented (Kong et al, 2016;Pasqualini et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

“…In addition, the solid and gas fission products lead to the volume growth of the UMo fuel meat (Kong et al, 2018). The fission gas swelling is dependent on the nucleation and growth of fission gas bubbles and affected by stress state, fission rate, temperature and recrystallization effect (Kong et al, 2016;Yan et al, 2019a;Kong et al, 2018), etc. As shown in Figure 1, the fission gas bubbles make the UMo fuel meat a porous structure, which will continue to evolve with the development of burn-up (Meyer et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

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Macro-Mesoscale In-Pile Thermal-Mechanical Behavior Simulation of a UMo/Zr Monolithic Fuel Plate

et al. 2022

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UMo/Zr monolithic fuel plates have a promising application prospect in high flux research reactors. To prolong the service life and achieve safety design, the in-pile macro-mesoscale thermal-mechanical behavior of the fuel plate needs further simulation research. In this study, for the fuel meat, the theoretical models of the equivalent fission gas bubble volume fraction, the gas-bubble inner pressure and the maximum skeleton stress are developed, with the effects of bubble distribution pattern involved. The application into the simulation of the in-pile macro-mesoscale thermal-mechanical behavior of the UMo/Zr monolithic fuel plate indicates that the maximum skeleton stress of the fuel meat basically rises with the burn-up, and may reach four times of the macroscale first principal stress of the fuel meat. The distribution patterns of the gas bubbles in the fuel meat might have a distinct influence on the maximum skeleton stress, and the most conservative results of the simple cubic arrangement can be used for the failure prediction of the fuel meat.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Macro-Mesoscale In-Pile Thermal-Mechanical Behavior Simulation of a UMo/Zr Monolithic Fuel Plate

et al. 2022

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Effects of sizes and mechanical properties of fuel coupon on the rolling simulation results of monolithic fuel plate blanks

Kong

Ding

Yang

et al. 2018

Nuclear Engineering and Technology

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Effects of Rolling Speed and Reduction on Rolling Simulation Results of Monolithic Fuel Plates

Kong

Yang

Ding

et al. 2018

International Journal of Nonlinear Sciences and Numerical Simulation

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The in-pile performances of UMo/Zr monolithic nuclear fuel plates are directly related to their manufacturing quality. The interface bonding strength depends on the contact pressures over the surfaces of the Zircaloy covers, the Zircaloy frame and the UMo coupon during rolling. The contact pressures are affected by the process parameters such as the rolling speed and the reduction per pass. These parameters should be carefully investigated to optimize the fabrication process. In this study, a three-dimensional stress updating algorithm is presented for the strain-rate-dependent mechanical constitutive relation of Zircaloy. Three-dimensional FEM simulation of the rolling process for monolithic nuclear fuel plates is carried out. The influences of the rolling speed and reduction on the geometrical shape and the contact pressure between the Zircaloy cover and the coupon will be discussed according to the computational results. The results indicate that (1) along the plate width direction the maximum contact pressure between the coupon and the Zircaloy cover exists at the center and decreases towards the edge; (2) when the rolling speed or reduction increases, the maximum contact pressure increases as well; and the dog-bone shape of the coupon at the back end is more visible.

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Zircaloy Plate Rolling Simulation with an Effective Strain-Rate-Dependent Stress-Updating Algorithm

Cited by 3 publications

References 20 publications

Macro-Mesoscale In-Pile Thermal-Mechanical Behavior Simulation of a UMo/Zr Monolithic Fuel Plate

Macro-Mesoscale In-Pile Thermal-Mechanical Behavior Simulation of a UMo/Zr Monolithic Fuel Plate

Effects of sizes and mechanical properties of fuel coupon on the rolling simulation results of monolithic fuel plate blanks

Effects of Rolling Speed and Reduction on Rolling Simulation Results of Monolithic Fuel Plates

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