Browse Publications Technical Papers 2001-01-1158
2001-03-05

Optimization Methods for IRS Axle Mount Design 2001-01-1158

Determination of locations and stiffness rates of Independent Rear Suspension (IRS) axle mounts is critical during the early stages of vehicle design. Depending on the vehicle, the design requirements of IRS axle mountings vary. Design objectives include the zero-roll condition, the static-roll condition and the dynamic-roll condition. Currently, there are no methods for IRS axle mount design for the dynamic-roll condition. Current design methods used for the other two requirements also lack accuracy and robustness. In this paper, methods developed for IRS axle mount design for all three objectives are explained. These methods are verified on a three-mount IRS axle. Additionally, placing the rigid body modes at desired frequencies is achieved. Compared to the current methods, the proposed methods are more accurate and robust. They could improve design quality and productivity significantly.

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