工字型截面弯曲切应力分布辨析  

THE DISTRIBUTION OF BENDING SHEAR STRESS IN I-SHAPED SECTION

作　　者：李敏[1] 李芷菡 陈伟民[3] LI Min;LI Zhihan;CHEN Weimin(School of Aeronautic Science and Engineering,Beihang University,Beijing 100191,China;College of Food Science&Nutritional Engineering,China Agricultural University,Beijing 100193,China;Institute of Mechanics,Chinese Academy of Sciences,Beijing 100190,China)

机构地区：[1]北京航空航天大学航空科学与工程学院,北京100191 [2]中国农业大学食品科学与营养工程学院,北京100193 [3]中国科学院力学研究所,北京100190

出　　处：《力学与实践》2021年第5期748-752,共5页Mechanics in Engineering

基　　金：中科院先导项目资助(XDA22000000)。

摘　　要：工字型截面是材料力学薄壁结构的典型代表,部分教材与教学PPT素材在弯曲切应力分布部分存在问题与争议,本文利用简化模型与力平衡条件给出理论分析结果,同时给出了有限元分析结果作为研讨性教学素材。The I-shaped section is a typical representative of the thin-walled structure. The distribution of the bending shear stress sees some difference in some textbooks and teaching PPTs. In this paper, a sim-plified model and the force balance conditions are used to obtain the theoretical analysis results, compared with the finite element analysis results.

关 键 词：工字型截面 弯曲切应力 强度校核 

分 类 号：O341[理学—固体力学]