摘要
建立了渐进损伤模型模拟接头失效,模型中采用改进的Hashin损伤准则及Apalak刚度退化模拟L筋条及蒙皮的损伤和渐进失效,胶层失效通过内聚力单元进行模拟,并预估L型接头的最终破坏载荷。结果表明:建立的渐进失效模型可以较准确地模拟L型接头的拉伸破坏过程,L型接头的失效主要包括胶层的开裂、填充区底部基体的拉伸破坏和蒙皮层的分层破坏。
The progressive damage model was established to simulate failure of a carbon fiber reinforced polymer matrix composite L-joint. A modified form of Hashin Damage and Apalak stiffness degradation were adopted to damage evolution of composite laminates,and cohesive element was adopted to simulate interlaminar damage initiation and the final failure were predicted. The results show that the progressive failure model can accurately simulate the tensile failure process of the L-joint,and the failure type mainly includes the crack of glue layer,the tensile failure of the matrix at the bottom of filler area and the delamination failure of the laminates.
作者
石好男
王继辉
张桂明
SHI Hao-nan;WANG Ji-hui;ZHANG Gui-ming(School of Materials Science and Engineering,Wuhan University of Technology,Wuhan 430070,China)
出处
《玻璃钢／复合材料》
CAS
北大核心
2019年第3期16-20,共5页
Fiber Reinforced Plastics/Composites
基金
中央高校基本科研业务费资助(185201001)
