文章摘要
程科翔,马心坦.有限元-统计能量分析法的拖拉机驾驶室噪声研究*[J].,2020,39(5):723-729
有限元-统计能量分析法的拖拉机驾驶室噪声研究*
Research on tractor cab noise based on FE-SEA method
投稿时间:2020-01-13  修订日期:2020-09-02
中文摘要:
      对某拖拉机驾驶室内中频噪声进行预测,建立了拖拉机驾驶室FE-SEA(有限元统计能量分析)混合模型,通过理论计算和试验方法获取驾驶室结构内损耗因子等数据;加载振动和噪声激励后进行有限元-统计能量分析联合仿真,将仿真获取的驾驶室声压级与实测数据进行对比,分析对比表明该模型在中频段利用FE-SEA混合法分析所得结果与试验测试值拟合程度较高,分析各子系统对驾驶室声腔的能量贡献度,确定对驾驶室噪声贡献较大的子系统,针对性对驾驶室声学包进行整改,获得一定降噪效果。
英文摘要:
      Prediction of intermediate frequency noise in the cabin of a tractor, a hybrid model of the FE-SEA (finite element statistical energy analysis) of the tractor cabin was established, and data such as loss factors in the cabin structure were obtained through theoretical calculations and experimental methods; after vibration and noise excitation A joint finite element-statistical energy analysis simulation was performed to compare the cabin sound pressure level obtained from the simulation with the measured data. The analysis and comparison showed that the model fits the results obtained by the FE-SEA hybrid method in the middle frequency band to the test test values. High, analyze the energy contribution of each subsystem to the cabin acoustic cavity, determine the subsystem that has a greater contribution to the cabin noise, and rectify the cabin acoustic package to achieve a certain noise reduction effect
DOI:10.11684/j.issn.1000-310X.2020.05.010
中文关键词: 有限元-统计能量分析  拖拉机驾驶室  中频噪音  预测
英文关键词: Finite element-statistical energy analysis  Tractor cab  Intermediate frequency noise  Prediction
基金项目:国家科技部专项(2017YFD070020402)
作者单位E-mail
程科翔 河南科技大学车辆与交通工程学院 河南 洛阳 450841613@qq.com 
马心坦 河南科技大学车辆与交通工程学院 河南 洛阳 631170372@qq.com 
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