evolution-nvh
('e-nvh')


App for
NVH Assessments


PDF >>

evolution-nvh ('e-nvh') is an eOSSP App for comprehensive & highly efficient NVH Assessments, see below.

e-nvh
comes with a library for the evaluation of FEA and/or measurement based NVH results in both time & frequency domain,
including

- Fourier Analysis & Synthesis
- Computation of Velocity Levels, Narrow & Octave Band Spectra
- Analysis of Transfer Functions
- Determination of MAC Correlations
- Spline Functionalities

- Support for ASCII File Formats et al


e-nvh is available as source code, and in object & executable forms. So, don't hesitate to contact us >> for your individual NVH Evaluation benchmark and your tailored quote...
Ref.: BMW V12 Engine - Structure born Noise vs. Engine Speed
Integral Velocity Levels (1kHz Band)
eOSSP-Apps_e-dyn-&-e-nvh_Structure-born-Noise_BMW_V12-Engine_1000-RPM_Full-Load_1kHz-Band.png
1.000 RPM (1kHz Band)
eOSSP-Apps_e-dyn-&-e-nvh_Structure-born-Noise_BMW_V12-Engine_2000-RPM_Full-Load_1kHz-Band.png
2.000 RPM (1kHz Band)
click to enlarge Pics
eOSSP-Apps_e-dyn-&-e-nvh_Structure-born-Noise_BMW_V12-Engine_3000-RPM_Full-Load_1kHz-Band.png
3.000 RPM (1kHz Band)
eOSSP-Apps_e-dyn-&-e-nvh_Structure-born-Noise_BMW_V12-Engine_4000-RPM_Full-Load_1kHz-Band.png
4.000 RPM (1kHz Band)
 
eOSSP-Apps_e-dyn-&-e-nvh_Structure-born-Noise_BMW_V12-Engine_5000-RPM_Full-Load_1kHz-Band.png
5.000 RPM (1kHz Band)
eOSSP-Apps_e-dyn-&-e-nvh_Structure-born-Noise_BMW_V12-Engine_6000-RPM_Full-Load_1kHz-Band.png
6.000 RPM (1kHz Band)
 
Ref.: Liebherr Refrigerator Compressor Components - NVH
Velocity Levels - 3rd Band Spektras
eOSSP-Apps_e-nvh_Velocity-Levels_3rd-Bands_ACC-Delta.png

Ref.: BMW I4 Crankshaft - Normal Modes Verification
MAC Correlation of FE Models

eOSSP-Apps_e-nvh_MAC-Correlation.png