Engineering Service
Electric drive NVH engineering services
What NVH engineering services can BOACH Acoustics provide?
Note: Product development work in engineering is based on the establishment of CAE modeling/CAT test specifications!
Electric drive NVH Engineering Service Summary EDS (EPT) NVH Engineering Service Summary:
Indicator setting: vehicle-level/bench benchmarking test and indicator setting
EM CAE modeling: silicon steel sheet material parameters, damping identification and electromagnetic field construction
EPT CAE modeling: MBS structural load identification, EPT/EDS finite element modeling and vibration and noise simulation
Integration and contribution analysis: Analyze the contribution of EPT's airborne sound and structural sound, and obtain its interface load on the entire vehicle.
Electric drive NVH engineering service cases:
BOACH Acoustics provides NVH engineering services based on motors, reducers, EPT systems and their integration with products;
due to the large number of cases, four different levels of cases are listed here for illustration.
Case 1: Modal testing and benchmarking of a new energy motor
| Motor elliptical mode 1 | Motor elliptical mode 1 | Motor triangle mode 1 | End face first mode | TB top side mode | TB top modal | |
| Test | 1526Hz | 1628Hz | 2942Hz | 1807Hz | 2056Hz | 2748Hz |
 |
 |
 |
 |
 |
 |
|
| FEA | 1535Hz | 1571Hz | 3118Hz | 1825Hz | 2040Hz | 2741Hz |
 |
 |
 |
 |
 |
 |
|
| precise | 100% | 96.5% | 106% | 101% | 99% | 99.8% |
Case 2: CAE analysis and test benchmarking of stator vibration of a 6/9 motor
Case 3: NVH engineering services for a new energy vehicle powertrain
EDS/EPT FEA modeling (including water, winding effect)
EDS/EPT MBS, FEA modal, vibration & noise
Decomposition of electric drive assembly structural sound load, airborne sound load and radiated sound power benchmark
Case 4: A certain washing machine electric drive assembly and complete machine matching NVH engineering services
1) CAE model construction of the washing machine barrel and transfer function test benchmarking;
2) Load identification based on the connection relationship between the electric drive assembly and the barrel, combined with the CAE simulation analysis model and vibration test results;
3) Based on the load identification results, Analysis of noise contribution and verification of radiated noise;
4) Propose a noise reduction plan and conduct sample trial production and test verification.
Radiated noise and test benchmark of washing machine barrel under electric drive excitation
Noise contribution research and noise reduction plan formulation and verification
Remark:
For more technical details, please refer to the BOACH Acoustic public account article:
" Introduction to key parameters of CAE modeling of BOACH Acoustic electric drive assembly" "Introduction to electric drive system and its NVH issues"
Contact us
Phone：
Email：
Address：
Room 901, Building 1, Phase 2, Yungu Phase 2, Fengxi New Town, Xixian New District, Xixian New District, Xi'an City, Shaanxi Province
Room 307, Building 1, Harbin Institute of Technology Robot Industrial Park, No. 488 Qianjin East Road, Economic Development Zone, Kunshan City, Jiangsu Province
Site-wide search
Please enter your keywords to learn about our company