补片尺寸对胶层应力分布的影响  

EFFECT OF THE PATCH SIZE ON THE STRESS DISTRIBUTION OF THE BONDLINE

作　　者：赵培仲[1] 黄旭仁[1] 李艳丽[1] 胡芳友[1] 

机构地区：[1]海军航空工程学院青岛分院航空机械工程系,山东青岛266041

出　　处：《玻璃钢／复合材料》2012年第6期18-22,共5页Fiber Reinforced Plastics/Composites

基　　金：中国博士后科学基金(20110491882)

摘　　要：粘接修理结构中,胶层起着传递载荷的作用。其应力状态对于粘接修理结构有着重要的影响。为此,本文用有限元法分析了复合材料粘接修理结构中胶层应力分布随补片尺寸的变化。研究表明,增加补片长度和厚度可以提供补片分担载荷的作用,但是,对胶层的性能要求提高。胶层中大部分区域的应力较低,大部分载荷靠较小面积的胶层传递。修理试样的破坏形式的变化反映了胶层应力分布的变化。In the damaged structure repaired with bonded composite,the bondline acts as an important role of transferring load.Its stress state may affect the repaired structure significantly.In this paper,the stress distribution of the bondline of the bonded composite repair structure was studied.The increase of the patch length and thickness can effectively enhance the capacity of the patch to share the load.Therefore,the bearing capacity of the damaged structure can be restored well.However,the performance of the bondline must be good enough to transfer the load.In fact,the load transferring is mainly dependent on small part of the bondline.The failure mode of the repaired specimen can reflect the distribution of the stress in the bondline.

关 键 词：胶层应力 有限元 补片尺寸 复合材料粘接修理 

分 类 号：TB332[一般工业技术—材料科学与工程] TB301