摘要
通过对含有离散源损伤的复合材料加筋板的拉伸试验和有限元模拟,研究了离散源损伤的损伤扩展与破坏特性。结果表明:复合材料加筋板的离散源损伤用穿透蒙皮切断桁条的切口来模拟是合适的,蒙皮上的穿透切口前端有很高的应力集中,桁条被切断导致加筋板传力路线改变;基于Hashin失效准则的渐进损伤有限元数值模拟方法,可以有效地模拟含切口加筋板的宏观损伤扩展和破坏过程,计算结果与试验值吻合较好。
The paper tensile experiment and FEA methods were used to study the damage propagation and failure properties of stiffened composite panels with discrete-source damage. The research results indicate that a notched composite panel is suitable to simulate the discrete-source damage of the stiffened composite panels with discrete-source damage, and there is high strain concentration at the notch end. Break-through of the stringer made the load path changed . Based on the Hashin failure criterion, the FEA method with progressive failure procedure can be used to simulate the notched stiffened composite panels＇ damage progression and failure procedure effectively. The analytical results have a good correlation with the experimental data.
出处
《复合材料学报》
EI
CAS
CSCD
北大核心
2008年第4期181-186,共6页
Acta Materiae Compositae Sinica
关键词
复合材料加筋板
离散源损伤
拉伸破坏
有限元分析
stiffened composite panels
discrete-source damage
tensile failure
finite element analysis（FEA）
