一种多孔型孔口应力集中教学演示装置的研制与应用  

Development and Application of Teaching Demonstration Device of Stress Concentration with Different Shaped Holes

作　　者：吴忠铁[1] 王晓琴[1] 高忠虎[1] Wu Zhongtie;Wang Xiaoqin;Gao Zhonghu(School of Civil Engineering,Northwest Minzu University,Lanzhou,730030,China)

机构地区：[1]西北民族大学土木工程学院,甘肃兰州730030

出　　处：《中国现代教育装备》2022年第5期69-71,78,共4页China Modern Educational Equipment

基　　金：2021年甘肃省高校创新创业教育教学改革研究项目“基于‘教-研-赛’三维模式下的土木工程专业创新型人才培养模式探索与研究”;甘肃省教育科学“十三五”规划项目“混合式教学对深度学习与高阶思维培养研究”(编号:GS[2020]GHB4735);西北民族大学本科教学建设项目“弹性力学课程教学过程改革的研究与实践”(编号:2017XJJG-34)。

摘　　要：为提升弹性力学课程中孔口应力集中的可视化教学和参与式教学效果,自主设计和研发了一种多孔型孔口应力集中教学演示装置,阐述了其设计方法和实验过程,并采用有限元模型进行了验证。该教学演示装置可以清晰反映出孔口应力集中具有集中性、局部性的特性,并受到孔型的影响,能够提升学生分析问题和解决问题的能力,具有良好的教学效果,可在弹性力学课程教学过程中推广和应用。In order to improve the effect of visual teaching method and participating teaching method in the elastic mechanics course, Teaching demonstration device of stress concentration with different shaped holes was designed and developed. Its design method and experiment process were described in this paper. Teaching demonstration device were verified by finite element model.The design of the teaching demonstration device can clearly reflect the relevant theoretical knowledge including the concentration and locality of stress concentration of small holes and the influence of hole shape.It can improve students’ ability to analyze and solve problems and has obviously teaching effect. Hence it can be promoted and applied in the teaching process of elastic mechanics course.

关 键 词：弹性力学课程 教学演示装置 教学效果 

分 类 号：O343-4[理学—固体力学] G642[理学—力学]