应用数学和力学2026，Vol.47Issue(5)：541-549,9.DOI:10.21656/1000-0887.460072
碳纤维增强碳化硅mini复合材料超高温塑性本构关系实验和理论研究
Ultra-High-Temperature Plastic Constitutive Relations of Carbon Fiber Reinforced Silicon Carbide Minicomposites:Experiment and Modeling
摘要
Abstract
Advanced ceramic matrix composites have excellent properties,such as resistance to ultra-high tem-peratures and corrosion,as well as high specific strength and stiffness.They are important candidates for ther-mal protection materials and structures of new-generation hypersonic vehicles.However,ceramic matrix com-posites have complex microstructures and various damage mechanisms,which make the study of their constitu-tive relations challenging.Minicomposites are the critical link in the multi-scale study of ceramic matrix com-posites.The study on their mechanical behaviors is important to the development and evaluation of security and reliability of advanced ceramic matrix composites.The tensile properties of C/PyC/SiC minicomposites were measured at 2 200℃in inert atmospheres for the first time based on the indirect induction heating technology.The plastic deformation behaviors of ceramic matrix composites under ultra-high-temperature extreme environ-ments were revealed.The random cracking of matrix was characterized by a 3-parameter Weibull model.The stress distributions of fiber and matrix were calculated based on the slip-lag model.The effects of ultra-high-temperature nonlinear deformation of fiber bundles and residual thermal stresses in the composites were char-acterized.An ultra-high-temperature plastic mesoscale constitutive model was established for C/PyC/SiC mini-composites and verified.The study is useful for the development of mechanics for ceramic matrix composites and provides experimental and theoretical supports for the reliability evaluation and life prediction of ceramic matrix composites on the hypersonic vehicles.关键词
陶瓷基复合材料/超高温极端环境/塑性本构关系Key words
ceramic matrix composite/ultra-high-temperature extreme environment/plastic constitutive relation分类
数理科学引用本文复制引用
李思儒,吉洪蕾,马智棋,成天宝,陈立明..碳纤维增强碳化硅mini复合材料超高温塑性本构关系实验和理论研究[J].应用数学和力学,2026,47(5):541-549,9.基金项目
国家自然科学基金(12027901 （）
12272069 （）
11802019) （）
