n-Post Shaker

The n-Post Shaker event simulates a vehicle supported on a test-rig by posts.

The posts can be attached to the wheels or to any other point of interest on the vehicle. The event can be added to a new or existing full-vehicle model with any number of axles, including two and three wheeled vehicles. Input signals drive the posts to excite the vehicle. The vehicle’s response in the form of predicted loads and accelerations may be used to assess durability and ride. The input signals driving the posts can be displacements or forces and moments. The signals may be synthesized or come from testing. Acceleration data from testing must first be double integrated and converted to a displacement input, and a signal manager included can perform the integration. In addition to the standard outputs for this event, the loads for any vehicle components can be output as needed for durability analysis.