联合应用隐式-显式有限元及边界元方法，分析地铁线路中几种典型钢轨波磨对车轮声辐射的影响。采用Ansys/LS-dyna建立有钢轨波磨存在的三维轮轨瞬态滚动接触模型，获得波磨激励下的轮轨接触力。将该轮轨力输入到有限元/边界元振动声辐射模型，进行波磨激励下车轮声辐射分析。结果表明，该模型能够反映波磨对轮轨作用力非线性的影响；钢轨波磨增大了轮轨间作用力，波磨波长越短，波深越深，对轮轨力的影响越大。对于直型辐板车轮，当钢轨波长较长或波深较小时，车轮声辐射主要由径向模态振动声辐射贡献，当钢轨波长较短或波深较大时，车轮振动声辐射在波磨激励频率处贡献较大。
周信
,
赵鑫
,
韩健
,
何远鹏
,
温泽峰
,
金学松
. 波磨条件下地铁车轮瞬态滚动噪声特性研究[J]. 机械工程学报, 2018
, 54(4)
: 196
-202
.
DOI: 10.3901/JME.2018.04.196
The influence of several typical rail corrugations on the sound radiation of the wheel is investigated by a hybrid model based on bathe implicit-explicit integration finite element method(FEM) and boundary element method(BEM) method. Firstly, a three-dimensional wheel/rail transient contact model with the presence of rail corrugation is established by using Ansys/Ls-dyna software, and the characteristics of wheel/rail contact force under corrugation excitation are obtained. Then the wheel/rail force is input to the FEM/BEM vibration sound radiation model, and the sound radiation analysis of the wheel is carried out under corrugation excitation. The results show that the model can reflect the influence of corrugation on the nonlinearity of the wheel/rail contact force. Rail corrugation increases the interaction between the wheel and rail, and the shorter the wavelength or the deeper the wave depth is, the greater the impact on the wheel-rail force. For the straight-type web wheel, when the wavelength is large or the wave depth is small, the sound power of the wheel is mainly from radial modal vibration contribution, when the wavelength is shorter or the wave depth is large, mainly due to the wheel vibration at passing frequency of rail corrugation.
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