玻璃钢/复合材料Issue(5)：25-32,8.
纤维金属层板铆接损伤机理与预测的研究
STUDY ON MECHANISM AND PREDICTIONOFRIVETED JOINTS OF FIBER METAL LAMINATES
摘要
Abstract
Fiber metal laminates (FMLs) rivetdamage is a coupling damage behavior caused by a complex structure composed of connecting pieces,the connectedparts and the rivets.In order to predict rivet damage behavior of FMLs,Johnson-Cook failure criterionis used to predict Aluminum damage,three-dimensional Hashin damage critefion is used to evaluate the damage of fiber layers,and the cohesive model is applied to delamination prediction.And experimental comparative analysis was performed to verify the rationality of the coupling damagemodel.Effects of laminate layers,riveting pretension,aluminum alloy fraction and geometric coefficients on FMLs damage and stiffness of plate riveting were studied by this damage prediction model,and it provides the feasible advice for the design of FMLs rivet.The results show that laminates with more layers are much easier to debond at the bi-material interface,and the interlaminar delamination at free endsdirectly reduces the rivet strength.Rivet strength increases with increasing aluminum fraction,but it will decrease when the aluminum contentis greater than 50％.Pretensioncan delay the damage initiation at fiber and matrix,and enhance the stiffness of the rivet joint,which consequently endow it with the ability to withstand greater external load.The riveting ultimate strength increases with increasing weight-diameter ratio W/D,and end distance-diameter ratio E/D of fiber metal laminate riveting strength have different effects until W/D =3 and E/D =3.Further increase of W/D and E/D will not improve the rivet strength.关键词
纤维金属层板/铆接/损伤机理/损伤准则Key words
fiber metal laminates/rivet/damage mechanism/damage criterion分类
通用工业技术引用本文复制引用
应少军,李建伟,平学成,程里朋..纤维金属层板铆接损伤机理与预测的研究[J].玻璃钢/复合材料,2018,(5):25-32,8.基金项目
国家自然科学基金项目(51365013) （51365013）
江西省青年科学基金(重点)项目(20133ACB21002) （重点）
