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International Journal of Nonlinear Sciences and Numerical Simulation

Editor-in-Chief: Birnir, Björn

Editorial Board: Armbruster, Dieter / Bessaih, Hakima / Chou, Tom / Grauer, Rainer / Marzocchella, Antonio / Rangarajan, Govindan / Trivisa, Konstantina / Weikard, Rudi

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2191-0294
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Volume 19, Issue 6

Issues

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

Xiangzhe Kong
  • Institute of Mechanics and Computational Engineering, Department of Aeronautics and Astronautics, Fudan University, Shanghai, 200433, China
  • Other articles by this author:
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/ Hongyan Yang
  • Science and Technology on Reactor Fuel and Materials Laboratory, Nuclear Power Institute of China, Chengdu 610213, China
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ Shurong Ding
  • Corresponding author
  • Institute of Mechanics and Computational Engineering, Department of Aeronautics and Astronautics, Fudan University, Shanghai, 200433, China
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  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ Xiaoming Peng
  • Science and Technology on Reactor Fuel and Materials Laboratory, Nuclear Power Institute of China, Chengdu 610213, China
  • Other articles by this author:
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Published Online: 2018-08-21 | DOI: https://doi.org/10.1515/ijnsns-2017-0155

Abstract

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.

Keywords: finite element method; monolithic nuclear fuel plate; rolling simulation; strain-rate-dependent; stress updating algorithm

PACS: 28.41.Bm

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About the article

Received: 2017-07-13

Accepted: 2018-08-10

Published Online: 2018-08-21

Published in Print: 2018-09-25


Citation Information: International Journal of Nonlinear Sciences and Numerical Simulation, Volume 19, Issue 6, Pages 605–619, ISSN (Online) 2191-0294, ISSN (Print) 1565-1339, DOI: https://doi.org/10.1515/ijnsns-2017-0155.

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