Peridynamic modeling of fuel pellet cracking

Selda Oterkus; Erdogan Madenci

doi:10.1016/j.engfracmech.2017.02.014

Peridynamic modeling of fuel pellet cracking

Selda Oterkus, Erdogan Madenci

Aerospace and Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

76 Scopus citations

Abstract

This study presents the peridynamic simulation of thermal cracking behavior in uranium dioxide, UO₂ fuel pellets that are used in light water reactors (LWR). The performance of the reactor is influenced by the thermo-mechanical behavior of the pellets. During the fission process, the pellets are subjected to high temperature gradients, and the oxygen diffusion significantly affects the temperature distribution. Therefore, a coupled analysis of temperature and oxygen diffusions and deformation is unavoidable in order to predict accurate cracking behavior in a fuel pellet. The accuracy of the predictions is verified qualitatively by comparing with the previous studies.

Original language	English (US)
Pages (from-to)	23-37
Number of pages	15
Journal	Engineering Fracture Mechanics
Volume	176
DOIs	https://doi.org/10.1016/j.engfracmech.2017.02.014
State	Published - May 1 2017

Keywords

Failure
Fuel pellet
Peridynamics
Uranium dioxide

ASJC Scopus subject areas

General Materials Science
Mechanics of Materials
Mechanical Engineering

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10.1016/j.engfracmech.2017.02.014

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title = "Peridynamic modeling of fuel pellet cracking",

abstract = "This study presents the peridynamic simulation of thermal cracking behavior in uranium dioxide, UO2 fuel pellets that are used in light water reactors (LWR). The performance of the reactor is influenced by the thermo-mechanical behavior of the pellets. During the fission process, the pellets are subjected to high temperature gradients, and the oxygen diffusion significantly affects the temperature distribution. Therefore, a coupled analysis of temperature and oxygen diffusions and deformation is unavoidable in order to predict accurate cracking behavior in a fuel pellet. The accuracy of the predictions is verified qualitatively by comparing with the previous studies.",

keywords = "Failure, Fuel pellet, Peridynamics, Uranium dioxide",

author = "Selda Oterkus and Erdogan Madenci",

note = "Publisher Copyright: {\textcopyright} 2017 Elsevier Ltd",

year = "2017",

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AU - Oterkus, Selda

AU - Madenci, Erdogan

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N2 - This study presents the peridynamic simulation of thermal cracking behavior in uranium dioxide, UO2 fuel pellets that are used in light water reactors (LWR). The performance of the reactor is influenced by the thermo-mechanical behavior of the pellets. During the fission process, the pellets are subjected to high temperature gradients, and the oxygen diffusion significantly affects the temperature distribution. Therefore, a coupled analysis of temperature and oxygen diffusions and deformation is unavoidable in order to predict accurate cracking behavior in a fuel pellet. The accuracy of the predictions is verified qualitatively by comparing with the previous studies.

AB - This study presents the peridynamic simulation of thermal cracking behavior in uranium dioxide, UO2 fuel pellets that are used in light water reactors (LWR). The performance of the reactor is influenced by the thermo-mechanical behavior of the pellets. During the fission process, the pellets are subjected to high temperature gradients, and the oxygen diffusion significantly affects the temperature distribution. Therefore, a coupled analysis of temperature and oxygen diffusions and deformation is unavoidable in order to predict accurate cracking behavior in a fuel pellet. The accuracy of the predictions is verified qualitatively by comparing with the previous studies.

KW - Failure

KW - Fuel pellet

KW - Peridynamics

KW - Uranium dioxide

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JO - Engineering Fracture Mechanics

JF - Engineering Fracture Mechanics

ER -

Peridynamic modeling of fuel pellet cracking

Abstract

Keywords

ASJC Scopus subject areas

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