The model is an Adams system model of an all-terrain vehicle (ATV) mounted on a four-post test rig (see
Figure 1 below). The model that is distributed in the Adams Durability installation is made up of rigid bodies only. We also provide an MSC.Nastran model of the left lower control arm (LCA) for building a flexible body's modal neutral file (MNF). You will generate the MNF using MSC.Nastran and then replace the rigid part with a flexible one for the left LCA. After the Adams simulation, you will perform a fatigue analysis using MSC.Fatigue and Patran with component loads from Adams. These component loads are in the form of modal coordinates (responses), so the method of fatigue analysis will be based on modal susperposition.