摘要
高温、冲击复杂载荷条件下材料结构的热-力耦合行为关系着高超声速飞行器等航空航天关键装备的结构安全和服役寿命,如何实现材料结构复杂热-力学属性的准确表征,一直以来受到业界学者们的高度关注。当前,国内外已发展出众多热-力学属性试验测试技术和表征方法,相关研究成果为关键部件的选材、结构设计、安全校核和行为预测提供了重要技术支撑。概述了航空航天装备材料结构在冲击、高温极端条件下的热-力学响应,系统总结了基于均匀状态假设的经典动态/高温力学属性测试方法技术特点和应用范围,就目前快速发展的多种全场测量技术、高速成像技术和参数反演识别方法进行了综述,着重阐述了基于全场测量数据的反演识别方法在材料动态/高温力学属性表征方面的应用现状,并给出材料属性参数表征在航空航天装备部件极端工况力学行为模拟预测和结构改进方面的应用实例,最后对多场耦合条件下材料热-力学属性先进测试表征方法的未来发展趋势进行展望。
The thermal-mechanical coupling behaviors of materials and structures under high temperature and highspeed impact complex conditions are closely related to the structural safety and service life of key astronautic and aeronautic armaments such as hypersonic vehicles.How to achieve an accurate characterization of complex thermal-mechanical properties of material structures has long been of great concern to researchers and engineers in industry.Currently,numerous experimental testing techniques and characterization methods have been developed,which provide important technical support for material selection,structural design,safety verification and behavior prediction of key components.In this review,the thermal-mechanical response of material structures under extreme conditions of highspeed impact and high temperature is outlined.The technical characteristics and field of application of classical dynamic/high temperature mechanical properties testing methods based on the uniform state assumption are systematically summarized.Meanwhile,a variety of rapidly developing full-field measurement techniques,high-speed imaging techniques and inverse parameter identification strategies are introduced.The current application status of the full-field measurement based inverse identification methods for dynamic/high-temperature mechanical properties is highlighted.Practical application examples of the material thermo-mechanical parameters identification in the FEM prediction of mechanical behavior and structural improvement of armament components under extreme operating conditions are presented.Finally,the prospective development trend of the advanced testing methods for thermal-mechanical properties of materials under complex conditions are discussed.
作者
付佳伟
蔡亚辉
李霓
齐乐华
FU Jiawei;CAI Yahui;LI Ni;QI Lehua(School of Mechanical Engineering,Northwestern Polytechnical University,Xi’an 710072;School of Aeronautics,Northwestern Polytechnical University,Xi’an 710072)
出处
《机械工程学报》
CSCD
北大核心
2024年第24期75-103,共29页
Journal of Mechanical Engineering
基金
国家自然科学基金(52175365,52231004)
陕西省高层次人才引进计划青年(00121)资助项目。
关键词
高温/冲击复杂载荷
动态力学属性表征
高温力学属性表征
全场测量技术
反演识别方法
high temperature and highspeed impact conditions
dynamic mechanical property characterization
high temperature mechanical property characterization
full-field measurement techniques
inverse identification methods
