AUTOMOTIVE - NVH
We offer simulation and vibration design for high performance car. The experience gained with McLaren, AlfaRomeo, Maserati, Ferrari and Ricardo allows to cover different range of areas related to  NVH .



PWT - MOUNTING SYSTEM

Calculation of the vibrating modesof the PWT and optimization of mounting supports in terms of stiffness and location is provided.  The driveline torsional dynamics effects and PWT  vibration are simulated under the following operating conditions  :
– Idle
–Wot
–Key ON  / Key OFF
–Tip in 

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FULL VEHICLE - RIDE & CONFORT SIMULATION
The complete vehicle is modeled and chassis vibration is predicted under PWT and ground sources to predict the effect of all subsystems joined together. Advanced dynamic analysis is realized using MSC Adams and Nastran combined together to include chassis stiffness effect (using MNF models) .
Analysis simulated Vs time, are run in idling, constant or transient speed (WOT) .
This model allows to to evaluate single subsystem contribution to the global vehicle vibration; moreover, time domain analysis show better comparison to real data measurements.
Simulation results are postprocessed using User-friendly program to allow an easy comparison to most output measurements system.



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DYNAMIC ANALYSIS and OPTIMISATION (modal map, VTF, inertances)
VTFs and calculated transfer functions are provided to be compared with experimental measuremsnts. Calculation simulation enable optimisation and design of components for NVH puroposes.


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analisi
 



SOUND   QUALITY
The sound from vehicle tailpipe can be predicted and calculated using 1D fluid dynamics models. Analysis results can be compared and validated with experimental measurements with a good approximation.
In this way the effect of manifold, turbines, catalysts or muffler can be evaluated and improved. Calculation allow to improve different components to get the target sound required. For high performance car, sound is one of the key aspect of vehicle performance.

sound
TROUBLESHOOTING 

Calculation is the fastest, most efficient and cheapest way to solve NVH issues. 
The procedure to be used is simple if applied correctly:
 
- Simple model creation to pick up the NVH issue
- Model  calibration with experimental measured data.
- Model optimisation and implement solution on the vehicle



NVH  TARGET  SETTING

  Starting from the target value of noise and vibration, each subsystem target are defined and objectived. Target setting definition is the main and most important aspect to define the NVH final attribute.