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DOE OSTI · 1825512

Efficient Failure Probability Calculations and Modeling Interface Debonding in TRISO Particles with BISON

Jiang, Wen·Singh, Gyanender·Hales, Jason D.·Toptan, Aysenur·Spencer, Benjamin W.·Novascone, Stephen R.
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Abstract

This document constitutes completion of the NEAMS milestone, which is titled Demonstrate efficiency improvements in TRISO failure probability calculations and the effect of debonding on fission product transport in TRISO fuel particles in Bison . In this report we present the development of the following: (1) the anisotropic elasticity model of pyrolytic carbon and extended material models using the local coordinate system for aspherical particle geometry; (2) a capability of modeling interface debonding in TRISO particles; and (3) an efficient high-fidelity approach to calculate the failure probability of TRISO particles. Benchmark problems and AGR-2 tests are used to verify the models and demonstrate these new capabilities.

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36 MATERIALS SCIENCE97 MATHEMATICS AND COMPUTINGAnisotropyBISONDebondingDirect integration approachTRISO

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Jiang, Wen, Singh, Gyanender, Hales, Jason D., Toptan, Aysenur, Spencer, Benjamin W., Novascone, Stephen R.. 2021-09-30. Efficient Failure Probability Calculations and Modeling Interface Debonding in TRISO Particles with BISON. https://doi.org/10.2172/1825512

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DOE OSTI2026

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36 MATERIALS SCIENCE↗