航空碳纤维增强树脂基复合材料加筋壁板吸湿行为  

Moisture Behavior of Aeronautic Carbon Fiber Reinforced Resin Composite Stiffened Panel

作　　者：谭翔飞[1] 谭鹏达 何宇廷[1] 冯宇[1] 安涛[1] 张天宇 刘凯[1] TAN Xiang-fei;TAN Peng-da;HE Yu-ting;FENG Yu;AN Tao;ZHANG Tian-yu;LIU Kai(Aeronautics Engineering College,Air Force EngineeringUniversity,Xi＇an 710038,China;Chongqing Nanping Middle School,Chongqing 400000,China)

机构地区：[1]空军工程大学航空航天工程学院,西安710038 [2]重庆市南坪中学校,重庆400000

出　　处：《材料工程》2018年第12期61-69,共9页Journal of Materials Engineering

基　　金：国家自然科学基金资助项目(51475470)

摘　　要：为研究碳纤维增强树脂基复合材料加筋壁板在湿热环境中的吸湿特性,在70℃/85%相对湿度的条件中开展了吸湿实验,结合实验数据,提出了复合材料加筋壁板的阶段吸湿模型,并对该型结构的吸湿行为进行了有限元仿真。结果表明:复合材料加筋壁板在吸湿初期符合Fick吸湿定律,在吸湿后期存在明显的阶段吸湿现象;提出的阶段吸湿模型具有较高的分析精度,阶段吸湿模型的吸湿曲线与有限元仿真结果保持一致,计算误差在5%以内;水分浓度分布结果揭示复合材料加筋壁板的阶段吸湿机制,结构在不同厚度的吸湿平衡速率差异是导致阶段吸湿现象的主要原因。In order to investigate the moisture property of carbon fiber reinforced resin composite stiffened panel in hygrothermal environment, moisture experiments were conducted in condition of 70℃/85%RH. Stage moisture model was proposed and moisture behaviors were analyzed by finite element method. The results show that the moisture curve of experimental result agrees with Fick’s diffusion law perfectly in initial moisture stage. However, stage moisture behavior exists in later moisture period. The moisture curve of stage moisture model agrees with finite element result,with an error less than 5% compared with the experimental result. The composite stiffened panel moisture mechanism is revealed by moisture concentration distribution. Additionally, the saturated moisture rate in different thickness zones is not synchronous, which is main reason resulting in stage moisture.

关 键 词：复合材料加筋壁板 吸湿行为 吸湿模型 水分浓度分布 

分 类 号：TB332[一般工业技术—材料科学与工程]