摘要
针对复合材料的分层现象,结合考虑材料脆性断裂的三线性内聚力模型,通过Fortran语言,编写了Abaqus用户子程序,建立了三维的含孔复合材料层合板渐进损伤分析模型。针对4种不同的铺层方式,进行了单轴拉伸试验,使用大型商用有限元分析软件Abaqus进行建模,对层合板的孔边损伤进行了分析。结果表明,模型可以较好地预测含孔复合材料层合板单轴拉伸失效的极限载荷和损伤形貌,层合板的失效区域主要集中于孔边。此研究方法和成果可为复合材料层合板设计和维修提供参考依据。
In response to the delamination phenomenon of composite materials,combined with a trilinear cohesive force model considering brittle fracture of materials,an Abaqus user subroutine was written using Fortran language to establish a three⁃dimensional progressive damage analysis model for composite laminates with a hole.Uniaxial tensile tests were conducted for four different layering methods,and modeling was conducted by using the commercial finite element analysis software Abaqus to analyze the hole edge damage of laminated plates.The results indicate that the proposed model can effectively predict the ultimate load and damage morphology of uniaxial tensile failure of composite laminates with a hole,and the failure zones of laminated plates are mainly concentrated at the hole edge.The research methods and results of this model can provide a reference for the design and maintenance of composite laminates.
作者
郭巧荣
宋依良
徐建新
吕伟航
GUO QiaoRong;SONG YiLiang;XU JianXin;LÜWeiHang(College of Aeronautical Engineering,Civil Aviation University of China,Tianjin 300300,China)
出处
《机械强度》
CAS
CSCD
北大核心
2024年第5期1243-1252,共10页
Journal of Mechanical Strength
基金
中央高校基本科研任务费(3122019074)资助。
关键词
含孔复合材料层合板
分层扩展
脆性断裂
单轴拉伸
渐进损伤
Composite laminates with a hole
Delamination growth
Brittle fracture
Uniaxial tensile
Progressive damage
