Finite Element Analysis of Sevenesque Style Chassis
 

Morning,

found some reports on FEA of some Sevenesque style chassis whilest stumbling about the Internet. They are on the Locost7 info site's in the chassis section:

www.Locost7.info

On this page see the links to (they will open the documents in Word):

Final Thesis A.doc
Final Thesis B.doc

by Wesley Linton (MSC Thesis - Cranfield University)

kitcaranalysis.doc
kitcaranalysis_V2.doc

by Unknown

Both deal with Sevenesque style chassis carrying out some FEA work on improving their stiffness. The work by Linton deals with a Leugo chassis and some work was carried out to align the model with experimental data. The other work is based on a Locost chassis.

They both make interesting reading.

This is HEAVEEEEEEEEEEEEe
ALRMALARM BRAIN CELL OVERLOAD.....ALRMALARM BRAIN CELL OVERLOAD.....ALRMALARM BRAIN CELL OVERLOAD.....ALRMALARM BRAIN CELL OVERLOAD.....ALRMALARM BRAIN CELL OVERLOAD:D :D :D

Over on Locost Builders someone did some FEA & came up with a few simple mods that would be beneficial to the overall design - busy at mo but will see if I can dig around later

I agree with Kev, far too heavy for me.

The best mod i can see is to consider making the chassis from 2mm wall section box rather than the 1.6mm. Doesn't seem like a lot, extra 8kg, but it makes the chassis a lot stiffer and stronger. Add some additional cross bracing around the engine bay and you have a very stiff chassis.

Just my thoughts.....AndyH

Ah, should have viewed your links first - the link to 'kitcaranalysys_V2.doc' is what I was referring to...

I,ve just started reading the attached links, maybe I,m the odd one out:o but that is quite interesting reading :)
I,ve saved it & will be reading it in more depth later....when kids are not wanting my attention :rolleyes:

cheers
andy

and then would you please design a chassis where the coilovers are in a better plane ie:front to back and with bellcranks and pushrods
cheers les g

:D

maybe i need to get out more , but the chassis "work" I find interesting:o :)

cheers
andy

Go to 3GE 's website Les,copy the chassis pic and and make it larger you will see the brackets for the rocker arms fitted to it.

I made my chassis from 2mm wall steel just because thats all i could get hold of at the time, but i bought a 2m section of 1.6mm box from b&Q the other day for the grp rear tub frame and in all honesty the thickness of the wall scared me, makes me feel glad iv over engineered things. i also blew a hole through it when welding!, i think 2mm is a little more forgiving to the novice welder like me, may be worth noting for those with limited welding experience looking to build a roadster in the future.