Development of vehicle virtual test rig for powertrain dynamics characterization
2022-01-0783
03/29/2022
- Event
- Content
- Simulating driveline NVH is a prominent and critical factor during new vehicle development. Driveline performance depends on accuracy of loads consideration and boundary condition of the vehicle systems. The evaluation of transient and steady state behavior of driveline system depends on participation from vehicle subsystems such as suspension, tire, body in combination with the driveline components like powertrain, flywheel, clutch, propeller shaft, differential and driveshaft. This work describes the development of a test rig in the virtual dynamic’s environment, consisting of virtual transmission and driveline assembled with full vehicle model. Roller rigs are developed and incorporated at the front and rear wheel ground integration points for excitation mechanism, it also accounts for tire slip factors and contact forces. A RWD ( rear wheel drive) vehicle model is considered for capturing major driveline transient and vibration event such as tip in/ tip out, gear shifting and torque transmissions. RWD model is updated with mounting system properties like stiffness, rigid boy separation, clutch hysteresis, flexible modes incorporation of subsystem to simulate real world vehicle application environment. This study also provides an insight to coupling of various rigid body and flexible modes of vehicle components during driveline simulation. Dynamic response is simulated for powertrain mount force, acceleration and vehicle system during the various driving events. The objective of the simulation is to evaluated and minimize the powertrain induced vibration caused by gas force and inertia forces at major transfer paths along the vehicle architecture.
- Citation
- BHATTACHARYYA, I., "Development of vehicle virtual test rig for powertrain dynamics characterization ," SAE Technical Paper 2022-01-0783, 2022, .