材料力学中关于斜弯曲定义的讨论  

Discussion on the definition of skew bending in mechanics of materials

作　　者：刘灵灵 LIU Lingling(Department of Engineering Mechanics,Shijiazhuang Tiedao University,Shijiazhuang,050043,China)

机构地区：[1]石家庄铁道大学工程力学系,河北石家庄050043

出　　处：《华北科技学院学报》2022年第1期114-117,共4页Journal of North China Institute of Science and Technology

基　　金：河北省高等教育教学改革研究与实践项目(2020GJJG170,2021GJJG233)。

摘　　要：梁的弯曲变形问题是材料力学中最重要的教学内容之一,学生需要对内容所涉及的基本概念有清晰的认识和准确理解。平面弯曲和斜弯曲是一对重要概念,两种情况下对应的应力和位移计算是不同的。本文讨论了斜弯曲的两种定义并给出了各自的适应范围,同时分析了斜弯曲时位移与中性轴的关系,该分析过程为学生全面理解斜弯曲问题提供了有益的补充材料。The bending deformation of beams is one of the most important teaching contents in mechanics of materials,which takes the most time.Students need to have a clear and accurate understanding of the basic concepts involved in this part of the content.Plane bending and skew bending are a pair of important concepts,the corresponding stress and displacement calculations under the two cases are different.In this paper,two definitions of skew bending have been discussed and their applicable scopes have been given.The relation between displacement and neutral axis in skew bending has been analyzed.The analysis process provides useful supplementary materials for students to fully understand the problem of skew bending.

关 键 词：平面弯曲 斜弯曲 组合变形 中性轴 挠度 

分 类 号：O341[理学—固体力学]