Analysis of NVH performance for an electric commercial vehicle cab
PAN Qinglong
WU Zhihong
Abstract：In order to study the performance of noise,vibration,harshness(NVH)of an electric commercial vehicle,the finite element model of cab and acoustic cavity are established by using the finite element software,and the acoustic cavity modal analysis is carried out.Take the mounting point of the left and right front shock absorbers of the chassis as the excitation point,the noise transfer function(NTF)analysis is performed on the right ear of the driver and compared with the vehicle standard sound pressure level.The results show that the mode shape distribution of the cavity is uniform and reasonable,and the natural frequencies of the cavity mode avoid the natural frequency of 100.8 Hz of the vehicle to prevent resonance,the model response point sound pressure level is less than 65 dB,which meets the NVH performance standard.
Keywords：electric vehiclecabNVHvocal cavity modeNTF
Publication Date：2024-02-28
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：6( 99-104 )