复合材料层合板机械连接结构累积损伤模型和挤压性能试验研究  

Numerical calculation of damage accumulation and bearing strength experimental verification for composite single bolted joint

作　　者：张爽[1] 王栋[1] 郦正能[1] 寇长河[1] 章怡宁[2] 

机构地区：[1]北京航空航天大学飞机设计研究所,北京100083 [2]沈阳飞机设计研究所,沈阳110035

出　　处：《复合材料学报》2006年第2期163-168,共6页Acta Materiae Compositae Sinica

基　　金：凡舟基金资助项目(20050503)

摘　　要：建立了三维累积损伤有限元模型,采用扩展拉格朗日乘子法对螺栓表面和复合材料层合板孔壁间的接触行为进行了模拟。对复合材料层合板中纤维断裂、基体开裂和纤维-基体剪切3类基本损伤类型的产生、扩展以及它们之间的关联性进行了研究。计算得到了复合材料层合板单钉连接结构的载荷-位移曲线,预测了它们的初始挤压破坏载荷。同时,进行了T300帘子布/QY8911双马来酰亚胺树脂层合板单钉单搭螺栓挤压强度试验,验证了不同铺层类型和结构尺寸对复合材料层合板机械连接挤压性能的影响。试验结果和计算结果吻合较好,证明了该模型和算法的有效性。A three-dimensional non-linear progressive damage model was developed to predict the response of composite laminates with a single bolt. The analysis took into account the contact at the bolt-hole interface by Augmented Lagrangian Contact Algorithm. The objectives of the study were to investigate the onset and development of the fibre damage, matrix damage, fibre-matrix shear, and their relationship. From the load-displacement curves drawn from the calculation, the initial bearing damage strength was predicted. The effects of stacking sequences and geometrical parameters on the bearing strength were determined experimentally. Good agreement between experimental results and numerical predictions is observed.

关 键 词：层合板 机械连接 累积损伤 接触模型 

分 类 号：TB330.1[一般工业技术—材料科学与工程]