摘要
翼板纵向翘曲位移模式是否妥当对剪滞效应的分析有很大影响。本文在板壳理论的基础上建立有限元模型,考察薄壁箱梁在弯曲变形时翼板纵向位移沿横向的不均匀分布。应用回归分析方法,用最小二乘法对各种假定逐一拟合,以残差大小作为检验函数逼近程度的指标;当残差平方和最小时,其对应的函数形式也就最符合真实变形。
whether the longitude warping and displacement mode of the flange plate is aptitude has distinct influence for the shear lag effect analysis. The finite element model was set up based on the Slap and shell theory, aml tile author review the uneven distribution of the longitude displacement along the cross of flange plate when the thin wall iox beam eurling and deformation. Least squat method of regression analysis was used to do simulation one by one, the residual standard deviation used as the index of function approach degree. When sum of square of standard deviation is the least, the related function will accord witt the real deformation.
出处
《工程质量》
2013年第4期24-27,共4页
Construction Quality
基金
兰州工业学院校级青年科技创新项目(13K-015)
关键词
薄壁箱梁
剪力滞效应
悬臂梁
翘曲位移模式
thin wall box beam
shear lag effect
cantiever
warping and displacement mode
