复合材料型材腹板局部屈曲分析  

Web Local Buckling Analysis of Composite Structural Shapes

作　　者：刘庆辉[1] 乔丕忠[2] 徐吉峰 陆孜子 

机构地区：[1]河海大学力学与材料学院,南京210098 [2]上海交通大学海洋工程国家重点实验室,上海200240 [3]中国商飞北京民用飞机技术研究中心,北京100083

出　　处：《力学季刊》2013年第4期557-562,共6页Chinese Quarterly of Mechanics

基　　金：海洋工程国家重点实验室自主研究课题(GKZD010059)

摘　　要：选取恰当的屈曲形函数,利用瑞利-里兹法求得了边界为转动或扭转加劲肋约束的正交各向异性板在平面剪切和轴向压缩作用下的局部屈曲解析解.给出了各种截面形式FRP复合材料型材相邻板件之间约束刚度的近似表达式,并将求得的解应用到型材腹板的局部屈曲分析中;将求得的解析解和有限元解进行对比,结果吻合良好.扩展了正交各向异性简支板和固支板受到均匀压力和均匀剪力作用的相互作用方程.By adopting appropriate buckled shape function, local buckling analytic solutions for orthotropic plates under combined shear and axial compression action and restrained by rotational or torsional restraining stiffeners were obtained using the Rayleigh-Ritz method. The approximate expressions of the restraint stiffness for various sections （Box-, I-, C- and Z-sections） were provided, and their application to web local buckling predictions was illustrated. The analytic predictions are in excellent agreements with the finite element eigenvalue analysis. The interaction formulas for simply supported （SS） and clamped （CC） orthotropic plates under uniform shear and uniform compression were developed for buckling analysis of restrained plates.

关 键 词：局部屈曲 复合材料型材 腹板 正交各向异性板 离散板分析 

分 类 号：O343.9[理学—固体力学]