称量传感器标定装置机架谐响应分析  

Harmonic Response of Calibration Device Rack of Load Cell

作　　者：张昌明[1] 冯博琳 贺洋洋[1] 郭昌盛[1] ZHANG Chang-ming FENG Bo-lin HE Yang-yang GUO Chang-sheng(Shaanxi University of Technology, Hanzhong 723000, Chin)

机构地区：[1]陕西理工大学,汉中723000

出　　处：《包装工程》2017年第9期188-193,共6页Packaging Engineering

基　　金：陕西省科技厅项目(S2017ZDYFYBXMGY0137)

摘　　要：目的解决称量传感器标定装置机架在工作中受到砝码冲击载荷和电机振动时,机架与电机连接部位被频繁破坏的问题。方法采用有限元分析技术,结合三维设计软件Pro/E对机架进行了建模,基于模态和谐响应分析理论,运用有限元分析软件Ansys Workbench对机架进行谐响应分析。结果得到外界载荷频率与机架各部位应力、变形、应变之间的关系,确定称量传感器标定装置机架危险频率范围为70.467 Hz和77.92 Hz,即固有模态阶数的第4阶和第6阶模态。结论通过谐响应分析,得出了机架发生共振时可能产生的最大振动幅值,为称量传感器在实际工作中如何避免共振提供一定的理论参考。The work aims to solve the problem that the connection parts of rack and motor are frequently damaged when the load cell calibration device rack is subject to the impact load of weights and the motor vibration. By means of finite element analysis technology and in combination with 3D design software Pro/E, a model was built for the rack. Based on the theory of modal and harmonic response analysis, the finite element analysis software Ansys Workbench was used to analyze the harmonic response of the rack. The relationship between the external load frequency and the stress, deformation and strain of each part of the rack was obtained. It was determined that the dangerous frequency range of the load cell calibration device rack was 70.467 Hz and 77.92 Hz, i.e. the fourth and sixth order modes of the natural modal order. Through the harmonic response analysis, the maximum vibration amplitude that may be generated when the rack resonates is obtained, which provides certain theoretical reference for the load cell to avoid resonance in the actual work.

关 键 词：称量传感器 谐响应分析 共振现象 

分 类 号：TH164[机械工程—机械制造及自动化]