IDAC were required to carry out a linear structural analysis of the access platform and check the safety factors. IDAC created two 3D models of the platform in AutoDesk Inventor CAD system to represent two configurations of the platform; legs forward and legs back. The geometry was simplified to remove any small features that were deemed unnecessary for the analysis. Contact conditions were set for all the interfaces and fully fixed constraints were used at the supports.
Although the platform was only required to carry one person, area loads were applied at two locations to simulate two people standing on the platform in case of emergency.
The graphics below show the equivalent stress and deflection results for the legs forward configuration. These results for both configurations were well within design limits in terms of stress and structure deflections under load were small. In addition to these results the safety factors were also calculated for the entire structure and the minimum safety factor for both leg configurations was found to be 5. This showed that the access platform was well designed for its purpose.