摘要
研究低温对橡胶弹性元件传递率和固有频率的影响是改善转向架动力学性能的重要手段。简要分析了弹性元件低温效应,设计了一种弹性元件受迫振动试验方案,并与2种自由振动试验方案进行分析比对,重点通过受迫振动试验方案研究了温度为23℃、0℃、-20℃、-40℃对不同橡胶弹性元件传递率及固有频率的影响。研究表明:试验设计与实际工况一致,受迫振动试验更能准确反映出弹性元件的传递率和固有频率特性,随着温度降低,弹性元件的传递率变小,固有频率变大,在刚度合格且在非共振频率区,传递率越小减振效果越好,研究成果为高寒动车组转向架防共振设计、弹性元件的研发和试验起指导作用。
The influence of low temperature on the transmission rate and natural frequency of rubber elastic components is an important method to improve the dynamic performance of bogie.Based on brief analysis to the elastic element effect at low temperature,designed a kind of elastic element of forced vibration test then compared with two kinds of free vibration testing scheme analysis,studied different rubber elastic element transfer rate and the influence of natural frequency at 23℃,0℃,-20℃and 40℃temperature by forced vibration testing scheme.Research results show that:the design of experiments is consistent with the actual working condition and forced vibration test is more accurately reflect the transfer rate and the inherent frequency characteristics of elastic element.Elastic element transfer rate decreases and the inherent frequency increase with temperature reducing.In qualified stiffness and non-resonant frequency section,lower transfer rate and the better damping effect.This research results could provide instruction application to bogie anti-resonant design on low-temperature EMU,its research,development and test of elastic element.
作者
彭立群
林达文
王叶青
吴兴磊
王进
PENG Liqun;LIN Dawen;WANG Yeqing;WU Xinglei;WANG Jin(Zhuzhou Times New Material Technology Co.,Ltd.,Zhuzhou 412007 Hunan,China;National Rail Transport Polymer Materials and Product Quality Supervision and Inspection Center(hunan),Zhuzhou 412007 Hunan,China)
出处
《铁道机车车辆》
北大核心
2018年第6期55-60,共6页
Railway Locomotive & Car
关键词
橡胶弹性元件
传递率
固有频率
试验研究
rubber elastic components
transmission rate
natural frequency
experimental research
