For this week I focused my attention on the second presentation we will be giving on 10/24 (Wed). This presentation was finalized after i performed some FEA on the four different kind of third rail designs. In the end, my partner and I decided to go with the hollow diamond shape; this shape is just a 2x2" square sheet metal beam that will be rotated 45 degrees to get the diamond shape (figure 1). The FEA that was conducted is pictured in figures 2,3 and 4.
Figure 1 (left): Design for third rail 
Figure 2 (left): FOS=16 for the hollow diamond-shaped rail
Figure 3 (left): Highest displacement is 1.31mm 
Figure 4 (above): the Von Mises stresses are presented with the highest being around 2.32e7 Pa
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