You have been tasked with the structural design of a vehicle moment of inertia swing rig. The swing rig is designed to provide a platform to be able to determine the moment of inertia of a vehicle in various orientation. The vehicle is placed on the platform, which is suspended on a frame, and then subsequently swung back-and-forth. The period of oscillation of the swinging frame is measured, and subsequently utilised to determine the moment of inertia of the vehicle parallel to the axis of the swing's rotation.
The important design parameters of the swing rig are its mass and stiffness. In addition to improving the maintainability and serviceability of the system, a low mass reduces the error in the measurement of the vehicle's inertia (the inertia of the rig can be subtracted from the calculation, a larger mass increases the uncertainty of the measurement). A stiffer swing rig will have a larger percentage of its kinetic energy in the swinging mode, thereby increasing the accuracy of the measurement. You will be provided overall dimensions of the swing rig to be designed, a list of mandatory structures, the details of the proof load case and a list of beam cross sections that may be utilised in the design. You will be required to design a rig that, at the proof load, has a yield stress factor of safety greater than 10 and a static deflection less than 2.00 mm. The rig must have a mass less than 180 kg.

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