NVH

Acoustic and vibration comfort have a growing importance in vehicle development due to increasing customer expectations. Especially new powertrain concepts including electric drives cause NVH challenges. Multi-body and finite element methods are applied as essential part during the vehicle development process.

Powertrain Components

  • Structure and air borne noise of eDrive system, engine-transmission unit and gearbox
  • Gear whine analysis
  • Rattling behavior of gear pairs
  • Crank train dynamics

Powertrain Integration

  • Definition of non-linear mount characteristics
  • Engine start-stop vibration improvement
  • Development of customized models for e.g. hydro mounts
  • Analysis of interaction with vehicle structure

Car Body and Cabin

  • Dynamic stiffness at interfaces
  • Noise and vibration transfer functions
  • Interior noise and vibration

Full Vehicle NVH

  • Modal map
  • Fully coupled vehicle structure and interior cavity
  • Powertrain and road noise analysis using full CAE or hybrid approach

Air Borne Noise

  • Acoustic radiation of powertrain components
  • Evaluation of acoustic shielding
  • Simulation of air intake systems

Available Software

  • Abaqus, MSC Nastran (finite element solver)
  • MSC Adams, Simpack (multi body simulation)
  • MAMBA (simulation of joint contact phenomena)
  • MNOISE (acoustic simulation postprocessor)
  • FEMFAT LAB vi (load generation based on measurements)