考虑剪滞和高阶剪切效应的复合材料薄壁箱梁弯曲分析  

BENDING ANALYSIS FOR FRP THIN-WALLED BOXBEAM CONSIDERING BOTH SHEAR LAG AND HIGH-ORDER SHEAR DEFORMATION

作　　者：付武荣[1] 周仕刚[1] 

机构地区：[1]同济大学航天航空与力学学院,上海200092

出　　处：《玻璃钢／复合材料》2009年第2期19-23,共5页Fiber Reinforced Plastics/Composites

摘　　要：本文以复合材料层合板理论为基础,用最小势能原理建立了一种能对工程中常见的复合材料薄壁箱梁的剪滞与高阶剪切效应进行分析的方法,结合算例,得到了剪滞与高阶剪切效应对截面应变和梁挠度影响的变化规律,通过与Timoshenko梁理论及剪滞与一阶剪切效应方法结果的比较,表明其变化规律和相应的结果基本正确可靠。Based on the theory of composite laminated plates, an analysis method on the FRP thin-walled box beam is established by means of the principle of minimum potential energy, and the influence of shear lag and highorder shear deformation effects is taken into account. Some numerical examples are given and the strain on the cross section and the deflection are studied. Compared with Timoshenko beam theory and the method on shear lag and first-order shear deformation, it is demonstrated that the proposed method is effective and reliable.

关 键 词：剪滞 剪切 复合材料 薄壁箱梁 

分 类 号：TB332[一般工业技术—材料科学与工程]