Commercial vehicle Two Cylinder Powertrain Mount Selection Based on Robust Optimization Using MSC ADAMS and modeFRONTIER
CHALLENGE - Ride comfort, drivability and driving stability are important factors defining vehicle performance and customer satisfaction. The IC powertrain is the source for the vibration that adversely affects the vehicle performance.
SOLUTION - The vibration reduction is possible by minimizing unbalanced forces and/or by providing anti-vibration mounts at the powertrain-vehicle interface. In this study, a commercial vehicle two-cylinder powertrain model mounted on three mounts is built in MSC ADAMS/View. Powertrain mass and inertia properties are considered as constants. The rubber mounts stiffness and locations are the chosen design variables. A baseline normal mode simulation is done in MSC ADAMS/View. A complete workflow is set up in modeFRONTIER wherein all the design variables, output variables, constraints and objectives are defined. Optimization is done using modeFRONTIER yielding all the feasible solutions. Next step is to subject all the input data sets of feasible solutions to manufacturing and assembly tolerances and to check their robustness.
BENEFITS - The interactive use of evolutionary multi-objective algorithm, provided by modeFRONTIER, in the powertrain mounting design is very attractive from the Engineering viewpoint. Furthermore, the designer can achieve robustness of the solution.