磁机械振荡器的拍振动研究  

STUDY ON BEAT VIBRATIONS OF MAGNETIC MECHANICAL OSCILLATORS

作　　者：成海英[1] 孙慧[2] 俞晓明 CHENG Haiying;SUN Hui;YU Xiaoming(Shanghai Electronic Information Vocational and Technical College,Shanghai 201411;School of Physics Science and Technology,Yangzhou University,Yangzhou,Jiangsu 225002;School of Mathematics and Physics,Yancheng Institute of Technology,Yancheng,Jiangsu 224051)

机构地区：[1]上海电子信息职业技术学院,上海201411 [2]扬州大学物理科学与技术学院,江苏扬州225002 [3]盐城工学院数理学院,江苏盐城224051

出　　处：《物理与工程》2024年第5期168-174,共7页Physics and Engineering

基　　金：教指委华东地区高等学校教学研究项目(2023JZWHD03);教育部产学合作协同育人项目(220900457075358)。

摘　　要：本文研究了第36届国际青年物理学家锦标赛(IYPT)中磁机械振荡器的拍振动问题。应用二自由度自由振动理论分析系统运动特征,得到固有频率以及几种典型初始条件下振动规律。搭建实验装置,用DIS实验设备等测量了系统参数值,通过Tracker追踪磁机械振荡器上端磁铁的运动轨迹,得到实际运动图像。使用Working Model仿真软件搭建运动模型,虚实结合,引入实验参数,设定初始条件,探讨各因素对实验结果的影响。结果表明,弹性系数、等效质量、初始条件、阻尼等对拍振动的影响各异,理论与实验结果吻合较好。This paper investigates the beat vibrations of magnetic mechanical oscillators in the 36th International Young PhysicistsTournament(IYPT).The motion characteristics are analyzed using the two-degree-of-freedom free vibration theory.The motion characteristics of the system are analyzed by using the two-degree-of-freedom free vibration theory,and the natural frequencies and vibration laws under several typical initial conditions are obtained.The experimental device was set up,the system parameter values were measured by DIS experimental equipment,etc.,and the motion trajectory of the magnet at the upper end of the magneto-mechanical oscillator was tracked by Tracker to obtain the actual motion image.The Working Model simulation software was used to build a motion model,combining virtual and real,introducing experimental parameters,setting initial conditions,and discussing the influence of various factors on the experimental results.The results show that the elastic coefficient,equivalent mass,initial conditions,damping,and other factors have various impacts on the beating vibration,and the theoretical and experimental results agree well.

关 键 词：IYPT 磁机械振荡器 拍振动 虚实结合 

分 类 号：O32[理学—一般力学与力学基础]