Master Thesis - OUFTI-1

is to prevent the batteries' bulge. So, this one has to constrain the batteries in every
case to prevent this bulge. However, this particular thickness does not allow to x
the screws that realize the connection between the box and the cover of the support.
For this reason, the thickness of the reinforcement was increased to 6 mm around
the connection holes. This step is illustrated in Figure 3.16.
Figure 3.16: Reinforcers and connection holes
• Finally, useless material was removed from several places (the two side of the support
and the side reinforcers) to lighten the box. Some weld toes were also added to obtain
the nal design of the box presented in Figure 3.17. It should be noted that the weld
toes situated at the level of the two parts around the hole for the P C 104 connector,
are bigger than the others. This choice was made to avoid any stress concentration
inside the support's legs, which would lead to the fracture of this one.
Figure 3.17: Final design of the box
This nal design leads to a volume of 9.76 × 10 −6 m 3 , which corresponds to a mass of
27.33 g. Schematics with exact dimensions are presented in Figure 3.18.
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