xlsm files are more compressed than xlsx files and allow of course macros. xlsb files are more compressed than xlsm files, allow macros and can make a more than 50% difference in file size with respect to xlsx files. Especially when reading large files and worksheet preparation becomes a cpu...
Hi vftm,
The only correct method is the 3d vector approach since most of the "inplane" methods fall into pieces when a suspension is a 5 link multi-link (without any wishbondes). I have written a few topics about suspension design on the FSAE forum so have a look there.
Cheers,
dynatune
The bible of Suspension Design written by the pope himself: Wolgang Matchinsky Road Vehicle Suspensions http://www.amazon.co.uk/Road-Vehicle-Suspensions-Matschinsky/dp/1860582028 but be prepared, only for people that want to become experts in suspension analysis. I bought it back in 1988 and it...
I doubt whether you will find a freeware suspension tool that is capable of handling a virtual steering axis suspension and providing 100% correct results. In order to do so the software needs to be based on an vectoralgebraic algorithm (=3D) and most freeware tools are based on the classical...
Greg is right about using a simple example to start understanding the basics, at least from a kinematic point of view. However, these "virtual" steer axis suspension types have been developed almost entirely for their compliant behavior and that makes things a bit more complex and without a...
Designing a front suspension from scratch is not an easy exercise and most certainly not for a novice. I do not know what your timing horizon is but in case you are under a certain pressure to deliver a result I would look for some expert of your trust for guidance on what to do. I would also do...
This type of suspension is a derivative from a double wishbone where the upper wishbone has became a "virtual" wishbone with two links creating a virtual "steering axis", most likely to reduce the "KPI" offset trying to affect the compliant suspension behavior in a favorable way. Since this kind...
If I take the average in my database of all cars that I have had measured the average radius of giration of a car turns out to be 45% of it's wheelbase. Note however that the "extremes" go from 40% to 50%.
Cheers
dynatune4xl
The Ford Puma Rallye car had a similar suspension like that, only better from a package point of view. IT was basically a "kinematic" version of the twistbeam suspension but then tunable.
Cheers
dynatune4xl
Why would you go to two virtual lower ball joints on an FSAE car ? The only reason why this is done on (rwd/awd) production cars is to get the steering rack out of the way enigne (allowing this to be mounted lower in the chassis) and because it has to be mounted low for best compliant behaviour...
