考虑损伤和界面脱粘的复合材料加筋板稳定性试验与模拟研究  

Experiment and simulations of stiffened panel buckling with composite damage and interfacial delamination

作　　者：张永久[1] 耿小亮[1] 甘建[2] 岳珠峰[1] 

机构地区：[1]西北工业大学力学与土木建筑学院,西安710129 [2]成都飞机设计研究所,成都610041

出　　处：《应用力学学报》2013年第1期19-24,142,共6页Chinese Journal of Applied Mechanics

基　　金：国家自然科学基金(11102163);西北工业大学研究基金(JC20110218)

摘　　要：对复合材料帽型加筋板的压缩稳定性进行了试验研究,并在包含复合材料多种损伤模式和胶层损伤的条件下,对加筋板失稳及损伤演化特征开展了有限元分析。试验与模拟结果表明:在加筋壁板失稳前,基体、纤维、加强筋和壁板之间的胶层均未产生明显损伤,加筋板的失稳会导致快速的损伤演化;壁板近表面损伤较内部严重,胶层界面脱粘降低了壁板的极限承载能力;考虑损伤的模拟结果与试验相符性好,证明了该方法的可行性和有效性。This paper presentes the experimental investigation of the compressive stability of composite hat-shape stiffener panels.A series of finite element simulations are conducted to analysis the buckling and damage evolution characteristics correspondingly.Various damage models and cohesive damage are included in the simulations.The results of experiments and simulations indicate the following phenomena:The matrix,the fiber and the adhesive have not been damaged obviously prior to buckling;Stiffened panel's buckling produce damage evolution immediately;The damage near panel's surface is more serious than that inside;Cohesive damage reduce the carrying capacity of composite stiffened panel;The simulations taking account of damage agree well with the tests,which demonstrates the feasibility and effectiveness of the simulations.

关 键 词：复合材料 加筋板 脱粘 稳定性 胶层损伤 

分 类 号：O346.5[理学—固体力学] TB23[理学—力学]