摘要
综合运用工程计算方法、有限元分析方法和试验方法,分别进行了13种T形长桁整体加筋壁板的稳定性研究,讨论了两种理论方法的准确性,得到了长桁与蒙皮刚度比对屈曲载荷的影响变化规律。结果表明:工程计算方法、有限元分析方法与试验结果吻合较好;当Ast/(bsts)> 0. 4时,整体加筋壁板的局部屈曲载荷随长桁与蒙皮刚度比的减小而提高;随肋间距的增加,屈曲载荷变化不大。
Engineering method, finite element method and experimental method are used to study the stabilities of 13 types of integrated stiffened panels of T-shaped truss, and the accuracy of theoretical methods is discussed. The influence of stiffness ratio of truss to skin on buckling load is presented. The results indicate that the experimental results of engineering method, finite element method and experimental method are consistent. If Ast/（bsts）〉 0. 4, buckling load of integrated stiffened panels increase with the reduction of the stiffness ratio of tress to skin, and buckling load remains almost constant with the increase of distance between fibs.
作者
程立平
迟坚
闫亚斌
Cheng Liping;Chi Jian;Yah Yabin(Aeronautics Science and Technology Key Laboratory of Full Scale Aircraft Structure Static and Fatigue,Aircraft Strength Research Institute of China,Xi＇an 710065,Shaanxi,China;AVIC Aircraft Corporation Xi＇an Aircraft Company,Xi＇an 710089,Shaanxi,China)
出处
《工程与试验》
2018年第3期31-34,共4页
Engineering and Test
关键词
加筋板
屈曲
工程方法
有限元法
试验
stiffened panel
buckling
engineering method
FEM
test
