摘要
从结构力学的角度研究了《义务教育物理学科课程标准(2022年版)》内附样题中我国古人搬运巨木场景插图,分析了插图中支架上弯矩的分布规律,并利用WorkingModel软件进行了仿真;发现支架上弯矩的最大值分布在被绳索约束的交叉点附近,支架最容易在绳索约束处断裂;支架中较粗一端朝上,有利于增加支架的强度。
From the perspective of structural mechanics,this paper studies the illustrations of the scene of ancient Chinese carrying giant wood in the sample questions attached to the“Physical Curriculum Standards for Compulsory Education(2022Edition)”,analyzes the distribution law of bending moment on the support in the illustrations.Some simulations have been done by the WorkingModel software.It is found that the maximum bending moment on the support is distributed near the intersection point constrained by the rope,and the support is most likely to fracture at the rope restraint point.Besides,the thicker end of the bracket should be placed upward,which is conducive to increasing the strength of the bracket.
作者
张怀华
ZHANG Huaihua(Jiaozuo No.11Middle School,Jiaozuo,Henan 454000)
出处
《物理与工程》
2023年第1期167-171,共5页
Physics and Engineering
基金
2021年河南省基础教育教学研究项目《Phyphox在中学物理实验探究活动中应用研究》(JCJYC2106zy073)阶段性研究成果。
关键词
义务教育
物理学科课程标准
搬运巨木
支架
弯矩
compulsory education
physics curriculum standard
carrying giant wood
bracket
bending moment
