Here is a very preliminary finite element anaylsis for the centreboard for the new cherub hull.
Basically this was performed in COSMOS works, which is the solver for Solidwork 2008. The board is treated as a solid board made a aluminium. The head of the board is fixed, e.g. restrained in all directions. Then the top surface is loaded with a pressure acting to bend the board downwards. The purpose of this analysis was to try and determine what is the best shape of the individual layers of carbon cloth so that i'm getting the best use out of it as possible for the weight.
This image is a plot of the Von Misses stress, which is a method of determining the overall stress in an object. the red areas are under high stress, while the blue is under lower stress. From this i can select a certain stress level and see what its shape is over the surface.
The image above shows the outline of a certain stress level. This suggests that if i make the individual layers close to this shape i should be getting the most out of the material for its weight.
Hopefully this arvo i will be able to use the newer version of this programme at uni to actually make i model that has carbon skins and be able to not only determine the shape, but also how many layers are needed and how much the board might flex under load.