含缺陷铝蜂窝道面板弯曲和疲劳特性  

Bending and Fatigue Performance of Aluminum Honeycomb Channel Panel with Defects

作　　者：陈正磊 王润堂 许巍[1] 蔡良才[1] 孙岩 CHEN Zhenglei;WANG Runtang;XU Wei;CAI Liangcai;SUN Yan(Aeronautical Engineering College,Air Force Engineering University,Xi’an,710038,China;The 95364 Troops,Guangzhou,524300,China)

机构地区：[1]空军工程大学航空工程学院,西安710038 [2]95346部队,广州524300

出　　处：《南京航空航天大学学报》2020年第1期53-60,共8页Journal of Nanjing University of Aeronautics & Astronautics

基　　金：国家自然科学基金(51578540)资助项目。

摘　　要：为了研究面板厚度及不同类别、不同程度的先天缺陷对铝蜂窝夹芯结构道面板疲劳性能的影响,对7组铝蜂窝夹芯道面板试样进行三点弯曲静载试验和三点弯曲疲劳试验。结果表明:面芯脱焊缺陷对铝蜂窝道面板的疲劳性能影响最大,含10%和30%面芯脱焊缺陷的试件疲劳性能分别降低了76%和92%,说明防止面芯脱焊缺陷至关重要。经分析,铝蜂窝道面板弯曲疲劳特性服从威布尔分布,相关系数超过0.95以上。对完好试样和含不同类别、不同程度先天缺陷的试样分别建立了反映应力水平和疲劳性能关系的威布尔方程。In order to study the influence of panel thickness,different types and degrees of congenital defects on the fatigue performance of aluminum honeycomb sandwich panel,three point bending static load test and three point bending fatigue test were carried out on seven groups of aluminum honeycomb sandwich panel samples.The results show that the surface core dewelding defects have the greatest influence on the fatigue performance of aluminum honeycomb panel,and the fatigue performance of the specimens containing 10%and 30%surface core dewelding defects decreases by 76%and 92%,respectively,indicating that it is very important to prevent the surface core dewelding defects.Through analysis,the bending fatigue characteristics of aluminum honeycomb panel obey Weibull distribution,and the correlation coefficient exceeds 0.95.Weibull equations reflecting the relationship between stress level and fatigue performance were established for intact samples and samples with different types and degrees of congenital defects.

关 键 词：铝蜂窝道面板 弯曲性能 疲劳寿命 lgS lgN曲线 

分 类 号：U8[交通运输工程]