Open AccessStudy on 3D quantization and optimization of the acoustic package of vehicle powertrain by energy boundary element method
Author(s) -
Congbing Wu,
Ping Yu,
Zhou Hong-xia
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1544/1/012081
Subject(s) - powertrain , noise (video) , automotive engineering , noise reduction , noise pollution , sound power , boundary element method , noise control , computer science , automotive industry , engineering , acoustics , finite element method , aerospace engineering , physics , structural engineering , artificial intelligence , torque , image (mathematics) , thermodynamics , sound (geography)
Automobile noise has become the first source of environmental noise pollution, and its radiated power reaches 75% of the total environmental noise, while powertrain noise is the main source of automobile noise. With the problem of noise reduction of automobile powertrain, a 3D grid positioning technology, based on energy boundary element method, was proposed to quantify the noise source of automobile powertrain, and the generalized sound holography was applied to obtain the noise cloud map and analyze the noise propagation path, so as to determine the acoustic package material and the optimal location. Through the optimization experiment and simulation of 4 schemes, the acoustic package of automobile powertrain with the best effect was obtained, and the insertion loss of 6.7db could be obtained at 7m of the powertrain. Therefore, the results have important engineering application values for automobile noise reduction.