Originally Posted by
fezzielove
cool project even from a design point, but unless your constructing your chassis from a singular piece of carbon no joints or bonds it will be next to impossible to gain realistic stress simulations also finding out the material specifications of your grade of carbon and resins the technique to fuse them, i would of thought to gain the material specifications needed to calculate stress's will involve a fair few destruction tests with load measuring equipment. if you want once you have a CAD model knocked up i can test it in CFD software to find possible aerodynamic improvements in design.
To be fair you can construct individual parts into assemblies in the CAD im using (solidworks) including then joining the assemblies/parts together using bonding or other techniques.
As standard it has material properties databases for much of the basic materials i would use, plus i can download more specific composites data and what i cant find i can add in myself using the technical specifications i have for the products i want to use.
Sure CAD is never as good as real life as CAD assumes everything is pretty much perfect but you can engineer in tolerances to take into account variations in practical bond stength and the real world practical methods of joining carbon panels.
Plus testing sample panels is a perfectly valid way of getting representative real world data.
Originally Posted by
Maxwell
3 spokes on a puma
it was just on the outline sketch i downloaded
Originally Posted by
XRT_si
Great idea but if you're going to that trouble I'd use something a lot better than a shitty Sierra rear beam!
As said id probably end up with something more fancy long term but as a design exercise i want to keep it simple to start with and use known reference points. Once its all referenced, its dead easy to change anyway as you just create various datum points in your 3D image and work from those.
Probably end up double wishbone. Mounting double wishbone bracketry onto a carbon chassis isnt that bad from the research and examples ive seen. Designing a good double wishbone set up is the hard bit