铁道标准设计2016，Vol.60Issue(10)：18-21,22,5.DOI:10.13238/j.issn.1004-2954.2016.10.005
轨下支承参数对钢轨声振特性影响研究
Effects of Sub-rail Support Parameters on Acoustic and Vibration Characteristics of Rail
摘要
Abstract
Rail radiation noise is one of the main components of wheel-rail noise and sub-rail support parameters have greater impact on rail vibration and acoustic radiation. The rail vibration mechanical model and acoustic boundary element model are established with the method of FEM/BEM to analyze the effects of sub-rail support parameters on the acoustic and vibration characteristics of rail and analyze the rule of the influences of fastener spacing, support rigidity and support damper on rail acoustic vibration. The results show that fastener support spacing has no obvious effect on rail vibration and acoustic radiation; at 20~200 Hz, reasonable fastener support stiffness can effectively reduce rail vibration and acoustic radiation;the reasonable fastener support damper which can effectively reduce the rail vibration is 20~2 000 Hz and the reasonable fastener support damper which can effectively reduce the rail acoustic radiation is 100~1 000 Hz;the influential frequency range of fastener support damper to the acoustic and vibration characteristics of rail is obviously wider than that of the fastener support stiffness.关键词
钢轨/支承参数/有限元法/边界元法/振动与声辐射Key words
Rail/Sub-rail support parameters/Finite element method/Boundary element method/Vibration and acoustic radiation分类
交通工程引用本文复制引用
王根平,陈伯靖,陈代秀,刘云..轨下支承参数对钢轨声振特性影响研究[J].铁道标准设计,2016,60(10):18-21,22,5.基金项目
国家自然科学基金(51278431) （51278431）
铁道部科技研究计划项目(2011S14032) （2011S14032）
