基于NTF的拖拉机驾驶室低频结构噪声优化  

Tractor Cab Low Frequency Structure Noise Optimization Based on NTF

作　　者：刘钊宾[1] 蔡登辉 赵海峰[1] 刘世谦[1] 高喆[1] LIU Zhaobin;CAI Denghui;ZHAO Haifeng;LIU Shiqian;GAO Zhe(Luoyang Tractor Research Institute Co.,Ltd.,Luoyang 471039,China)

机构地区：[1]洛阳拖拉机研究所有限公司,河南洛阳471039

出　　处：《拖拉机与农用运输车》2022年第2期54-56,共3页Tractor & Farm Transporter

摘　　要：通过对某拉机驾驶室进行NTF(Noise Transfer Function)分析,找出了该驾驶室NTF曲线在48 Hz处出现明显峰值,并对该驾驶室进行了板件贡献量和模态分析,找出了对应NTF峰值最大贡献板件为顶盖和前围板,并对前围板进行了结构优化和验证,使该驾驶室NTF曲线峰值降低了3.7 dB。该方法可以有效降低拖拉机驾驶室的结构低频噪声,改善其NVH性能。The NTF curve of a tractor cab is analyzed by NTF,and the peak value of NTF curve in the cab is found at 48 Hz,and the panel contribution of the corresponding NTF peak value is the roof and the dash panel,and the structure optimization and verification of the dash panel are carried out,the NTF curve peak value of the cab is reduced by 3.7 dB.This method can effectively reduce the structural low frequency noise of tractor cab and improve its NVH performance.

关 键 词：驾驶室 NTF 板件贡献量 优化 

分 类 号：S219[农业科学—农业机械化工程]