有限元方法在热障涂层研究领域中的发展与应用

刘延宽; 王源生; 王璐璐

doi:10.13224/j.cnki.jasp.20220762

有限元方法在热障涂层研究领域中的发展与应用

doi: 10.13224/j.cnki.jasp.20220762

刘延宽^1,,
王源生^1,*, ,,
王璐璐^{2, 3}

1.
中国民航大学航空工程学院天津市民用航空器适航与维修重点实验室，天津 300300
2.
沈阳工业大学材料科学与工程学院，沈阳 110870
3.
中国南方航空公司沈阳维修基地，沈阳 110169

基金项目: 天津市教委科研计划项目（2020KJ016）

详细信息

作者简介:
刘延宽（1988-），男，副教授，博士，主要从事热障涂层方向的研究。E-mail：yk-liu@cauc.edu.cn

中图分类号: V231.1
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- 文章访问数: 254
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- 被引次数: 0
出版历程
- 收稿日期: 2022-10-03
- 网络出版日期: 2024-03-06

Development and application of finite element methods in research field of thermal barrier coatings

LIU Yankuan^1
,,
WANG Yuansheng^{1,*
, ,},
WANG Lulu^{2, 3}

1.
Tianjin Key Laboratory of Civil Aircraft Airworthiness and Maintenance，College of Aeronautical Engineering，Civil Aviation University of China，Tianjin 300300，China
2.
College of Materials Science and Engineering，Shenyang University of Technology，Shenyang 110870，China
3.
Shenyang Maintenance Base，China Southern Airlines，Shenyang 110169，China

摘要

摘要:
分别从热生成氧化物（TGO）生长行为及应力应变、热障涂层（TBC）整体热力学性能、热障涂层结构优化及寿命预测三大方面进行概述，分析近些年来有限元方法在该研究领域中的发展与应用，总结目前研究中存在的问题和局限性。目前研究的发展方向主要是将失效理论、多物理场耦合以及Python子程序等与复杂的物理模型相结合，以获取更为准确的有限元分析结果。然而受限于真实TGO形貌毫无规律、高温条件下材料物性参数不充足、陶瓷层内微观孔隙随机分布等诸多问题，所得计算结果相比实际仍存在一定差距。今后可以从物理模型精细度、层间边界条件、动态生长模拟等方面进行更深入的研究。
- 热障涂层 /
- 有限元 /
- TGO生长 /
- 温度分布 /
- 应力分布 /
- 寿命预测
Abstract:
Three major aspects, including thermally grown oxides (TGO) growth behavior and stress-strain, overall thermomechanical properties of thermal barrier coatings (TBC), structural optimization and life prediction of TBC, were reviewed. The development and application of finite element method in these researches in recent years were analyzed, then the problems and limitations in current researches were summarized. At present, the research directions mainly focus on the combination of failure theory, multi-physics coupling and Python subroutines with complex physical models to obtain more accurate finite element analysis results. However, due to many problems such as irregular morphology of TGO, insufficient physical parameters of materials under high temperature conditions, and random distribution of microscopic pores in ceramic layers, there is still a gap between the calculated and actual results. In the future, more in-depth research can be carried out from the aspects of physical model fineness, interlayer boundary conditions and dynamic growth simulation, etc.
- thermal barrier coatings /
- finite element /
- TGO growth behavior /
- temperature distribution /
- stress distribution /
- lifetime prediction

HTML

图 1 TGO不规则形貌及生长模型^[19]

Figure 1. Model of TGO irregular morphology and growth ^[19]

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图 2 TBC模型示意图^[37]

Figure 2. Schematic of TBC model ^[37]

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图 3 冷却至25 ℃后，不同TGO厚度下界面等效塑性应变（ε）的分布^[37]

Figure 3. Distribution of equivalent plastic strain （ε） for different TGO thicknesses when TBC is cooled down to 25 ℃^[37]

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图 4 在63次热循环后TBC热应力分布^[41]

Figure 4. Thermal stress distribution of TBC after 63 thermal cycles ^[41]

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图 5 不同孔隙率下，热导率和弹性模量随孔径的变化^[49]

Figure 5. Evolution of thermal conductivity and elastic modulus with pore size at different porosities ^[49]

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图 6 热流路径及温度分布^[49]

Figure 6. Heat flow path and temperature distribution ^[49]

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图 7 孔隙横纵比和倾斜角对有效热导率的影响^[50]

Figure 7. Effect of pore aspect ratio and pore tilt angle on thermal conductivity of coating ^[50]

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图 8 涡轮叶片温度分布^[62]

Figure 8. Temperature distribution of turbine blade^[62]

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图 9 涡轮叶片应力分布^[62]

Figure 9. Stress distribution of turbine blade^[62]

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图 10 波长λ随陶瓷层和黏结层厚度的变化^[83]

Figure 10. Wavelength λ variation with TC and BC thickness ^[83]

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