The hitch shown in Figure P11-23 is used on an International 496 disk. The hitch is made of cold drawn 1018 steel with E = 29 × 106 psi and v = 0.30. The yield strength of the material is 53,700 psi. The disk requires 200 hp to pull at 6 mph. The total force of 12,500 lbf in the hitch is then determined from force equal to power divided by velocity. Determine the maximum von Mises stress and the deflection of the hitch under the load. In the model, use two 6250 lbf applied to each side of the hitch and fix the nodes at the ends of the attachment to the disk frame (as shown in the finite element model). (This problem is by Byron Manternach.)

Figure P11-23 Hitch from a 24-foot-wide International 496 disk (dimensions in inches) and typical finite element model (By Byron Manternach)

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