玻璃/碳纤维增强聚合物基纳米复合材料冲击力学特性分析研究  

Impact behaviors of glass / carbon fiber reinforced nano-polymer composites

作　　者：张霞[1] 陈志华[1] 张立华 冷鼎鑫[3] 

机构地区：[1]青岛理工大学琴岛学院机电工程系,山东青岛266106 [2]中国第一汽车股份有限公司技术中心轿车部,吉林长春130011 [3]中国海洋大学工程学院,山东青岛266100

出　　处：《机电工程》2016年第5期546-550,共5页Journal of Mechanical & Electrical Engineering

基　　金：中央高校基本科研业务费专项资金项目(20153054);中国博士后科学基金资助项目(2015M582141)

摘　　要：针对玻璃/碳纤维增强聚合物基纳米复合材料在冲击工程领域未普及使用的问题,为加快其应用速度,对该材料板件结构的冲击力学特性进行了研究,对比分析了锤头形状对其动力学响应的影响。基于复合材料强度和刚度理论,推导了玻璃/碳纤维增强聚酰胺/碳纳米管复合材料的正交各向异性的等效力学参数;利用非线性显式有限元方法建立了其板件结构的冲击力学模型,通过数值模拟其动态冲击过程,观察了其内部应力波的传播过程,测量了其动力学响应。研究结果表明:应力波从锤头与复合材料板的接触区域开始,逐渐向板件外边界传递。并且随着冲击过程的进行,板内应力峰值增大。与玻璃纤维增强相相比,碳纤维增强纳米复合材料板的刚度增强,冲击加速度峰值增大。Aiming at accelerating the application of the fiber reinforced nano-polymer composite （FRNC） in the impact engineering, the dy- namic behaviors of glass/carbon FRNCs were studied. The effects of＂ impactors with different geometry on the impact performances of compos- ite plate were discussed. According to the strength and stiffness theory of composites, the orthotropic material mechanical constants of glass/ carbon fiber reinforced polyamide with carbon nanotube were calculated. The impact model was established by explicit finite element method. The dynamic deformation process were simulated numerically. The stress wave propagation process was observed, and the dynamic responses were measured. The results indicate that the stress initiates in the contact region of impactor and the composite plate, and propagates towards to the boundary of composite plate. The maximum stress increases during the impact process. The stiffness and impact acceleration peak of carbon fiber reinforced nano-polymer composite are both greater, compares with glass fiber.

关 键 词：复合材料 有限元法 冲击力学特性 

分 类 号：TH145.4[一般工业技术—材料科学与工程] U465.6[机械工程—机械制造及自动化]