NVH

Vehicle Judder on Gradient Pull-away is caused by Torque ripple excitation of the driveline shuffle. MBS Methodology accurately captures the phenomenon and perform the directive CAE to mitigate the effect.

System Level EDU Gear Whine predictions methodologies are developed based on the MBS techniques. Detailed flexible bodies are used to capture the Gear Whine exactly and correlate against the test measurements.

Tip-in knock is characterized by the backlash on Torque-Reversal during vehicle Tip-in. Structural borne noise is audible in the Cabin. Methodology is developed and correlated against test measurement. Mitigation strategy is proposed to achieve desired vehicle level targets

Declutch Driveline clonk is generated by gears backlash due to sudden change in the Torque. Driveline MBS Methodology is developed and validated against the Transmission Case accelerations. Directional CAE analysis is performed and mitigated the NVH issue. Radiated Noise BEM procedure is developed and correlated against the measured Sound Pressure Levels.

Shift Lever vibration is simulated with flexible modelling all the components of the Shifter Mechanism (Shift Knob-Shift Sleeve). Correlated SLV procedure is industrialized for the next generation shifters

Declutch Driveline clonk is generated by gears backlash due to sudden change in the Torque. Driveline MBS Methodology is developed and validated against the Transmission Case accelerations. Directional CAE analysis is performed and mitigated the NVH issue. Radiated Noise BEM procedure is developed and correlated against the measured Sound Pressure Levels.

Passenger interface point vibrations are analysed for new balancer shaft introduction on the two-wheeler. Detailed Engine model is built with all flexible bodies. Frame FRF are correlated with the test measurements. Optimization of the balancer shaft configuration is achieved with the MBD model results

Methodology is developed and correlated against the initial test results (seat-rail accelerations). Directional CAE approach used to guide calibration engineers to setup various parameters like EM and Transmission Clutch parameters etc. in different driving scenarios

TV of Crank train is analyzed by modelling complete ICE with Flexible bodies. Model is driven by the Combustion forcing on the Piston on a dyno. TV of the crank analysed for different combustion orders. Order cuts results are correlated against the test measurements. Powertrain casing vibrations are studied with different balancer shaft configurations

Declutch clatter is the noise generated by the vibro-acoustics of the Powertrain housing . . Model is developed and correlated against the test measured vibrations. Directional CAE, optimized the parameters to achieved the desired load target

Prediction of Transmission case vibrations using existing methodology of modelling clearances of the transmission components. Directional CAE approach is used to mitigate the Transmission NVH