CAJ | 학술논문

弹性车轮广泛应用于城市有轨电车，能有效降低轮轨噪声。弹性车轮的基本结构是在车轮轮箍和轮心之间嵌装弹性橡胶件。本文基于TWINS滚动噪声模型，利用有限元‐边界元法，建立弹性车轮滚动噪声预测模型，通过仿真预测弹性车轮应用于地铁时的噪声辐射水平，并分析弹性车轮橡胶参数对振动声辐射的影响。计算结果表明：在本文选取参数范围内，激励相同时，橡胶的阻尼损耗因子取0.5、弹性模量取2300 M Pa时弹性车轮振动最小，与标准地铁车轮相比降低6 dB （A ）。
탄성차륜엄범응용우성시유궤전차，능유효강저륜궤조성。탄성차륜적기본결구시재차륜륜고화륜심지간감장탄성상효건。본문기우TWINS곤동조성모형，이용유한원‐변계원법，건립탄성차륜곤동조성예측모형，통과방진예측탄성차륜응용우지철시적조성복사수평，병분석탄성차륜상효삼수대진동성복사적영향。계산결과표명：재본문선취삼수범위내，격려상동시，상효적조니손모인자취0.5、탄성모량취2300 M Pa시탄성차륜진동최소，여표준지철차륜상비강저6 dB （A ）。
Resilient wheels ,which are widely used in city tram ,can effectively reduce the wheel‐rail noise . The structure of the resilient w heel is such that a viscoelastic rubber layer is inserted betw een the steel tire and the wheel center .Based on the model of TWINS rolling noise , using a hybrid finite element method and boundary element method(FEM‐BEM ) , an resilient w heel rolling noise prediction model w as established to predict by simulation the noise radiation levels when the resilient wheels were applied in the subway . The effect of viscoe‐lastic layer parameters of resilient wheels on vibration sound radiation was analyzed as well . The calculation re‐sults show ed that the resilient w heel had the minimum w heel vibration in the range of selected parameters of viscoelastic layer , given the same excitation , with a damping loss factor 0.5 and an elastic modulus of 2 300 MPa .It can decrease 6 dB(A) compared with the rigid wheel .