Abstract
High quality predicting of power train vibration behaviour is desired in the early design stage for efficient vehicle development. Conflicting demands arise, since precise, fast simulation models are required. High precision of the models will allow for the elimination of resonance
phenomena for future products, thereby ensuring their comfort for the customers. Fast simulations are becoming increasingly important for linking test environments with virtual prototypes under development.
This paper deals with different aspects in these conflicting demands for power train vibration models.
First, the paper investigates real-time capable mechanical models and decided in favor of the objectoriented modeling approach “for requirements of Hardware in the Loop” (HiL). This paper takes a closer look at the advantages of the object-oriented approach,
the model setup, its validation and the test results. A further criterion for the real-time capability is an efficient time integration of the solutions.
The result quality of these fast models is then successively compared to offline models as applied in multi-body dynamics (MBD). Even in the low frequency range, the torsional vibrations of the engine are amplified by the vibration characteristics of the power
train itself. Therefore, it is essential for the correct simulation of the noise phenomenon to build up precise dynamic models of the parts in the power train, including the areas where the excitation is transmitted to the vehicle body structure.
Simulation results are validated with tests of a passenger car power train under operating conditions.
The comparison of the different models enhances the specific knowledge for simulation application in the development process.
phenomena for future products, thereby ensuring their comfort for the customers. Fast simulations are becoming increasingly important for linking test environments with virtual prototypes under development.
This paper deals with different aspects in these conflicting demands for power train vibration models.
First, the paper investigates real-time capable mechanical models and decided in favor of the objectoriented modeling approach “for requirements of Hardware in the Loop” (HiL). This paper takes a closer look at the advantages of the object-oriented approach,
the model setup, its validation and the test results. A further criterion for the real-time capability is an efficient time integration of the solutions.
The result quality of these fast models is then successively compared to offline models as applied in multi-body dynamics (MBD). Even in the low frequency range, the torsional vibrations of the engine are amplified by the vibration characteristics of the power
train itself. Therefore, it is essential for the correct simulation of the noise phenomenon to build up precise dynamic models of the parts in the power train, including the areas where the excitation is transmitted to the vehicle body structure.
Simulation results are validated with tests of a passenger car power train under operating conditions.
The comparison of the different models enhances the specific knowledge for simulation application in the development process.
Original language | English |
---|---|
Title of host publication | SAE 2009-01-2072 |
Publisher | SAE |
Pages | 1-9 |
DOIs | |
Publication status | Published - 2009 |
Event | SAE 2009 Noise and Vibration Conference and Exhibition: NVC 2009 - St. Charles, United States Duration: 19 May 2009 → 19 May 2009 |
Conference
Conference | SAE 2009 Noise and Vibration Conference and Exhibition |
---|---|
Country/Territory | United States |
City | St. Charles |
Period | 19/05/09 → 19/05/09 |