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超高温材料及其复合结构设计与实验研究进展

发表时间:2014-08-15  浏览量:1775  下载量:536
全部作者: 姚学锋,马寅佶,苏蕴荃
作者单位: 清华大学航天航空学院,应用力学教育部重点实验室
摘 要: 高超声速飞行器在入轨或返回地面时,其尖端超高温材料及其复合结构遭受严重气动力和气动热环境,致使材料与结构内部应力状态以及破坏模式与热力烧蚀耦合场的关系十分复杂。这里主要对超高温材料设计、高温热障涂层、热力耦合分析、高温实验力学等国内外重要研究进展进行总结,详细阐述超高温材料及其复合结构设计及实验研究的关键科学问题与困难所在,并指出今后的研究重点将集中在:超高温材料微结构氧化模型;曲面热障涂层鼓包屈曲失效;热/力/烧蚀的多场耦合分析;热防护结构的多场耦合优化设计;超高温塑性/氧化本构;热力耦合场解耦分析及虚拟场优化;1 873 K以上的超高温力学测试方法;超高温非接触测试标准等方面。
关 键 词: 固体力学;热力耦合;综述;高温力学;热障涂层;超高温实验
Title: Research progress of design and experiments for ultra-high temperature materials and its complex structure
Author: YAO Xuefeng, MA Yinji, SU Yunquan
Organization: Key Laboratory of Applied Mechanics, Ministry of Education, School of Aerospace Engineering, Tsinghua University
Abstract: When the hypersonic reentry vehicles enter into the orbit or return to the ground, the ultra-high temperature materials and its complex structure will be suffered from harsh aerodynamic loads and aerodynamic heating, which leads to the complicated relationships among the internal complex stress state of the materials and the structure, the failure mode and the thermal ablation coupled field. This paper analyzed and summarized the research progress about the design of ultra high temperature materials, the thermal barrier coatings, the thermo-mechanical coupling analysis and the high temperature experimental mechanics, which indicates the key scientific problems and the difficulties of the design and the experiments for the ultra-high temperature materials and its complex structure. The future research will be focused on: the microstructure oxide model of the ultra-high temperature materials, the buckling failure of the thermal barrier coating, the thermo-mechanical-ablation multi-field coupling analysis, optimal design of thermal protective structure, the ultra-high temperature plastic and oxide constitutive, the decoupling analysis for the thermo-mechanical coupling field and optimization of virtual field, the ultra-high temperature mechanical testing method at 1 873 K or more, ultra-high temperature non-contact testing standard and so on.
Key words: solid mechanics; thermo-mechanical coupling; review; high temperature mechanics; thermal barrier coating; ultra high temperature experiment
发表期数: 2014年8月第15期
引用格式: 姚学锋,马寅佶,苏蕴荃. 超高温材料及其复合结构设计与实验研究进展[J]. 中国科技论文在线精品论文,2014,7(15):1469-1484.
 
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