纤维缠绕复合材料夹芯圆柱体轴压力学模型及复合吸能机制  

Mechanical Model and Damage Mechanism of Filament Wound Composite Sandwich Cylinder Under Axial Compression Loading

作　　者：周晓松[1] 梅志远[1] 张焱冰[1] ZHOU Xiao-song;MEI Zhi-yuan;ZHANG Yan-bing(Department of Naval Architecture Engineering,Naval University of Engineering,Wuhan,Hubei 430003,China)

机构地区：[1]海军工程大学舰船工程系,湖北武汉430033

出　　处：《北京理工大学学报》2018年第6期647-654,共8页Transactions of Beijing Institute of Technology

基　　金：国家自然科学基金资助项目(51479205)

摘　　要：为了从结构力学角度揭示纤维缠绕复合材料夹芯圆柱体在轴向压缩载荷作用下的复合吸能机制,建立了该结构的轴压力学模型,在考虑静力学平衡条件以及表层和芯材间位移协调条件的基础上,建立了表层侧向约束应力和芯材轴向压缩变形间的关系,重点分析侧向约束应力对结构损伤吸能机制的影响,探讨了表层和芯材设计参数间的影响规律.进一步开展的试验研究和破坏模式分析结果表明,该力学模型有效揭示了纤维缠绕复合材料夹芯圆柱体的复合吸能机制,指导了该结构的参数化设计.In order to reveal the energy absorption mechanism of the filament wound composite sandwich cylinder in the view of structural mechanics,a mechanical model of the structure was established under axial compression loading.Considering the force equilibrium and displacement compatibility between the surface and core,the relationship between the lateral restraint stress and core compressive deformation was put forward.The influence of hoop restraint stress on the damage mechanism was analyzed and the influence rules of parametric design between the surface and core was also conducted.The results of experimental studies and failure mode analysis show that,the mechanical model can effectively reveal the energy absorption mechanism in the view of structural mechanics and guide the parametric design of the structure.

关 键 词：纤维缠绕 复合材料 夹芯圆柱体 力学模型 

分 类 号：TB330.1[一般工业技术—材料科学与工程]