准静态加载下陶瓷基复合材料层合板应力-应变曲线的模拟

许仁红; 宋迎东; 李龙彪; 孙志刚

准静态加载下陶瓷基复合材料层合板应力-应变曲线的模拟

南京航空航天大学能源与动力学院, 南京 210016

基金项目: 航空科学基金(05C52013);973项目资助博士点基金(20070287039)

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出版历程
- 收稿日期: 2007-10-12
- 修回日期: 2008-04-17
- 刊出日期: 2008-10-28

Modeling behavior of cross-ply ceramic matrix composites under quasi-static loading

College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China

摘要

摘要: 采用细观力学方法来模拟纤维增强陶瓷基复合材料层合板在准静态加载下应力-应变行为.采用层合板修正剪滞模型分析复合材料出现损伤时的细观应力场,通过临界基体应变能准则、Nair脱粘准则确定基体裂纹间隔和界面脱粘长度.最后结合剪滞模型和损伤机制模拟陶瓷基复合材料层合板应力-应变曲线,并与试验数据进行比较,结果吻合较好.
- 陶瓷基复合材料 /
- 层合板 /
- 剪滞理论 /
- 本构模型
Abstract: The stress-strain response of cross-ply fiber-reinforced ceramic composites laminates under quasi-static loading was discussed by using a micromechanical approach.The cross-ply modified shear lag model was used to analyze the micro stress field of the damage composites.The critical matrix strain energy criterion and the Nair de-bond criterion were used to determine the matrix crack spacing and interface de-bonded length.At last,the tensile stress-strain curves were modeled by combining laminated shear-lag theory and failure criterion.The results from the present analysis match well with experimental data.
- ceramic matrix composites /
- cross-ply laminate /
- shear-lag theory /
- constitutive laws

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参考文献(10)

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