摘要
测试了不同湿热条件下T300/QY8911单向板的弯曲性能,建立了湿热条件下复合材料单向板的弯曲有限元模型,模拟了湿热条件下T300/QY8911单向板的弯曲性能,开发了复合材料损伤演化仿真模块,对湿热条件下T300/QY8911单向板弯曲损伤演化过程进行了仿真.结果表明:湿热条件下T300/QY8911单向板的弯曲模量具有较高的保持率,弯曲强度随湿热条件的变化差异较大,模量和强度的模拟结果与试验值的误差分别小于6%和2%,建立的弯曲有限元模型,能够比较准确地预测不同湿热条件下复合材料单向板的弯曲性能.
Flexural properties of T300/QY8911 undirectional laminates were tested under different hygrothermal conditions.Finite element models of composite undirectional laminates under hygrothermal conditions were built.The flexural properties of T300/QY8911 undirectional laminates tested in experimentation were simulated.Plus,a damage evolution simulation module of composite was developed.The integrated damage evolution process of T300/QY8911 undirectional laminates under hygrothermal conditions was simulated.Results show that,the flexural modulus of T300/QY8911 undirectional laminates remains unchanged under different hygrothermal conditions,but the flexural strength changes greatly with conditions.For flexural modulus,the error between simulation values and test results is less than 6%,and for flexural strength,it is less than 2%.The finite element models can predict flexural properties of composite undirectional laminates under different hygrothermal conditions relative exactly.
出处
《北京航空航天大学学报》
EI
CAS
CSCD
北大核心
2012年第7期947-952,共6页
Journal of Beijing University of Aeronautics and Astronautics
基金
国家973计划资助项目(2011CB606105)
关键词
单向板
湿热条件
弯曲性能
损伤演化
渐进失效
undirectional laminates
hygrothermal conditions
flexural properties
damage evolution
progressive failure
