剪切效应对工字形梁弯曲挠度影响的分析  

Analysis of Influence of Shear Effect on Bending Deflection of I-Shape Beam

作　　者：王骞弘 吴晓[2] Wang Qianhong;Wu Xiao(Hunan City University,Yiyang413000,Hunan,China;Hunan University of Arts and Science,Changde415000,Hunan,China)

机构地区：[1]湖南城市学院,湖南益阳413000 [2]湖南文理学院,湖南常德415000

出　　处：《工程与试验》2022年第4期16-18,共3页Engineering and Test

基　　金：2019年湖南省教育厅项目(19B383)。

摘　　要：研究了剪切效应对工字形梁弯曲挠度的影响问题。利用梁的剪应变与梁的轴向位移、弯曲挠度的微分关系,推导得到了工字形梁的弯曲微分方程,对弯曲微分方程积分可得考虑剪切效应的弯曲挠度表达式。算例分析表明,剪切效应对工字形梁弯曲挠度有较大影响。The influence of shear effect on the bending deflection of I-shape beam is researched in the paper.Based on the differential relationship between the shear strain of the beam and the axial displacement and bending deflection,the bending differential equation of the I-shape beam is derived.By integrating the bending differential equation,the expression of the bending deflection is obtained with the shear effect taken into account.The examples show that the shear effect has a great influence on the bending deflection of I-shape beam.

关 键 词：剪切效应 梁 弯曲 挠度 

分 类 号：O342[理学—固体力学]