摘要
以某型号铁路信号继电器触簧系统为研究对象,根据悬臂梁弯曲振动理论,基于有限元的方法建立了单组触簧系统的仿真模型。首先对触簧系统进行模态分析,得到了前5阶共振频率及其振型;之后,采用隐式动力学算法,通过对底座施加固定频率的振动激励载荷,得到了触头接触力、簧片应力变化及触头位移响应变化曲线;最后,基于模态叠加法对其进行谐波响应分析,得到了触头接触力及其位移频域响应,并通过改变触头密度、簧片密度、弹性模量、长度、厚度等参数,对仿真结果进行对比分析,得到了各参数变化对动静触头间接触力的影响情况。研究可为振动载荷下簧片式电气开关接触可靠性问题的仿真试验提供新思路。
Taking a certain type of railway signal relay contact spring system as the research object,according to the theory of cantilever beam bending vibration,the simulation model of the spring system was established based on the finite element method.Firstly,the modal analysis of the contact spring system is carried out,and the first five-order resonant frequency and its vibration mode are obtained.Then,using the implicit dynamics algorithm,the contact excitation force and the reed stress change and contact displacement response curve are obtained by applying a fixed frequency vibration excitation load to the base.By the harmonic response analysis based on modal superposition method,the contact’s contact force and its displacement frequency domain response are obtained,and the contact density,reed density,elastic modulus,the length,thickness and other parameters are compared and analyzed,and the influence of each parameter change on the contact force between the static and dynamic contacts is obtained.The research can provide a new idea for the simulation test of the reliability problem of the reed type electrical switch under vibration load.
作者
陈依泽
曹云东
CHEN Yize;CAO Yundong(Institute of Electrical Apparatus New Technology and Application,Shenyang University of Technology,Shenyang 110870,China)
出处
《电器与能效管理技术》
2019年第21期7-13,共7页
Electrical & Energy Management Technology
基金
辽宁省特聘教授项目(LT2015019)
