机翼整体机加壁板损伤容限分析  

DAMAGE TOLERANCE ANALYSIS OF TYPICAL MACHINED WING PANEL

作　　者：孔婷婷[1] 周龙超 王慧梅 

机构地区：[1]中航沈飞民用飞机有限责任公司,沈阳110179 [2]中航飞机股份有限公司西安飞机分公司,西安710089

出　　处：《机械强度》2017年第1期194-197,共4页Journal of Mechanical Strength

摘　　要：使用改进的裂纹闭合积分方法(MCCI)对典型机翼整体机加壁板的裂纹扩展及剩余强度试验进行了分析预测。通过与试验结果的对比,表明预测的裂纹扩展寿命及剩余强度载荷与实际试验结果的偏差在工程应用可接受的范围内,证明该方法可以在实际机型研发过程中推广应用。同时,试验也证明了整体机加壁板长桁的止裂效果不明显。This paper predicted the crack growth life and residual strength of typical machined wing panel based on MCCI（ Modified Crack Closure Integral）. Compared with the result of the test evidence,the deviation of the prediction is acceptable by the engineering application. The results show that this method could be used in the research and development phase of the new aircraft project. Otherwise,the test results also show that the feature of machined stiffened panel cannot arrest the crack well.

关 键 词：机翼壁板 裂纹扩展 剩余强度 裂纹闭合积分 

分 类 号：V215.6[航空宇航科学与技术—航空宇航推进理论与工程]