摘要
为了研究GJ-3型扣件的强度性能和频率参数,本文以现有线路中的GJ-3型扣件为研究对象,建立GJ-3型扣件的仿真分析模型,对其在模拟轮轨力的情况下进行静刚度仿真,得到仿真横向刚度、仿真垂向刚度,符合设计范围。通过强度分析得到上层铁垫板和下层铁垫板的应力,均能满足强度要求。对强度分析的模型做模态分析计算,给出了结构的前25阶固有频率和振型,得出了危险频率。在车轮经过轨道扣件的频率,车轴经过轨道扣件的频率,转向架经过轨道扣件的频率这3个频率段下,并考虑列车在车速120 Km/h以及140 Km/h的情况下进行列车激振频率计算,得出结果表明,扣件的各阶固有频率均远离列车的激振频率,即扣件不会和列车的激励产生共振。
In order to study the strength performance and frequency parameters of GJ-3 type fasteners,this paper takes the GJ-3 type fasteners in the existing line as the research object,establishes the simulation analysis model of GJ-3 type fasteners,carries out the static stiffness simulation under the simulation of wheel-rail force,and obtains the simulated transverse stiffness and vertical stiffness,which meet the design range. Iron plate is obtained by strength analysis of the upper and the lower the stress of iron plate,can meet the strength requirements. Model for modal analysis of the strength analysis calculation and gives the structure of the top 25 order natural frequency and vibration mode,the dangerous frequency is obtained. The frequency of the wheel after rail fastener,the frequency of the axle after rail fastener,bogie through rail fastener frequency under the three frequency,and consider the train at the speed of 120 km/h and 140 km/h under the situation of train vibration frequency calculation,The results show that all the natural frequencies of the coupler are far away from the excitation frequency of the train,that is,the coupler will not resonate with the excitation of the train.
作者
王煜晖
王安斌
刘浪
WANG Yuhui;WANG Anbin;LIU Lang(School of urban rail transit,Shanghai University of Engineering Science,Shanghai 201620,China)
出处
《智能计算机与应用》
2020年第10期137-140,144,共5页
Intelligent Computer and Applications
关键词
GJ-3型扣件
轮轨力
刚度
强度分析
模态分析
频率计算
GJ-3 Rail Fasteners
wheel force
stiffness
strength analysis
modal analysis
frequency calculation
