Peridynamics modelling of the interface behaviour of TRISO coated particle fuel

TRISO 涂层颗粒燃料界面行为的近场动力学建模

• 批准号: 2461892
• 金额: --
• 依托单位: Imperial College London
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2020
• 资助国家: 英国
• 起止时间: 2020 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2461892
• 关键词: Peridynamics; modelling; interface; behaviour; TRISO

Using an ABAQUS-implemented bond-based Peridynamics model, the goal of this project is to provide a deeper understanding of the failure mechanisms of TRISO coated particle fuel, especially regarding the crack propagation through the interfaces of the 3 layers of protection of the particle.The project started with an introductory Finite Elements analysis of the fabrication process of TRISO to unveil possible residual stresses that could affect its behaviour in the reactor.Secondly, a validation of the Peridynamics interface model has been performed on a simplified case of a bi-material ceramic specimen undergoing a 3-point-bend test.Finally the research will focus on the simulation of TRISO particles in real settings, with a possible comparison to experimental data

使用ABAQUS实现的基于键合的周向动力学模型，该项目的目标是提供对TRISO包覆颗粒燃料的失效机制的更深入的理解，特别是关于通过颗粒的3层保护层的界面的裂纹扩展。该项目从TRISO制造过程的介绍性有限元分析开始，以揭示可能影响其行为的残余应力其次，对双材料陶瓷试样进行了简化的三点弯曲试验，验证了周界面模型的有效性，最后，研究将集中在真实的设置下TRISO颗粒的模拟，并与实验数据进行了可能的比较