Technical Paper
Methodology for the Design of a Double-Wishbone Suspension System by Means of Target Cascading: Model-Geometry Interactions and Case Study
2013-04-08
2013-01-0971
Target cascading methodology is proposed as an efficient approach to the design optimization of the geometry of a double-wishbone suspension system of an off-road vehicle. The geometric setting of the suspension plays an important role on its performance, as well as on the interactions with other design domains of the overall system. In order to organize the complexity of this system, two types of hierarchies are established: a system hierarchy and a model hierarchy. For the system-based hierarchical organization, four levels were identified to express the suspension design problem in an overall vehicle design context: a super-system at the top level, two system design levels at the second and third hierarchical levels, and a components level at the lowest level. The model-based hierarchical organization considers four analysis models to investigate the suspension behavior: a steering DOF constrained kinematic model, a longitudinal, a handling and a ride dynamics model.