摘要
在考虑截面横向剪切变形及剪力滞后效应的基础上，用最小势能原理推导出了双轴对称铺设结构的复合材料展合箱梁在对称弯曲条件下的挠度，应力及截面横向剪切系数的计算公式，并对其合理性进行了论证．当材料为均匀时，本文所有公式均退化为均匀梁的经典公式，且算例和现有模型实验的对比表明，本文理论和方法不但计算精度较好，而且简便，实用．
On the basis of considering the vertical shear deformations and shear lag effect for the composite symmetrically laminated boxbeam, the formulas of symmetrical bending deflection, stresses and vertical shear coefficient are derived by using the principle of minimum potential energy in this paper.Under the even materials conditions, the formulas can be simplified to the well known basic bending formulas of even material beam.The comparison analyses of results between the numerical calculation and model test demonstrate the efficiency and reliability of the method.
出处
《兰州铁道学院学报》
1995年第3期20-27,共8页
Journal of Lanzhou Railway University
关键词
复合材料
箱形梁
弯曲
挠度
应力
composite boxbeam
bending
deflection
stress
