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Re: Khamsin Virtual Racecar Challenge 2015
Posted: 15 Oct 2015, 13:38
by machin
Is the question from a "realism" point of view?
They look a bit too "flimsy" to me: I would reduce the amount of taper and increase the connection area to the wing...
DTM rear wing mount example:

Re: Khamsin Virtual Racecar Challenge 2015
Posted: 15 Oct 2015, 14:15
by graham.reeds
Re: Khamsin Virtual Racecar Challenge 2015
Posted: 15 Oct 2015, 14:45
by CAEdevice
I'm more worried about the rule compliance.
Realism is not a problem, I can run a structural simulation to verify the resistence and the vibrational behaviour (it's my job, I'm confindent about it... not the same for CFD simulations

)
Re: Khamsin Virtual Racecar Challenge 2015
Posted: 15 Oct 2015, 14:46
by CAEdevice
They copied my wing (or I copied their one...)

Re: Khamsin Virtual Racecar Challenge 2015
Posted: 15 Oct 2015, 17:06
by wesley123
CAEdevice wrote:
I'm more worried about the rule compliance.
I don't see why it wouldn't be. The rules require the wing to be mounted by max. 2 points. This is in compliance with rule K3.2
Other than that, I'd say it could classify as bodywork for any part outside of the wing box. So imo, as long as it's thickness is 10mm, it is legal. I'm not sure how big the thinnest point is across the Z-axle, but as long as it's over 10mm it should be okay. Which means it complies with K1.2
Re: Khamsin Virtual Racecar Challenge 2015
Posted: 15 Oct 2015, 17:13
by CAEdevice
wesley123 wrote:CAEdevice wrote:
I'm more worried about the rule compliance.
I don't see why it wouldn't be. The rules require the wing to be mounted by max. 2 points. This is in compliance with rule K3.2
Other than that, I'd say it could classify as bodywork for any part outside of the wing box. So imo, as long as it's thickness is 10mm, it is legal. I'm not sure how big the thinnest point is across the Z-axle, but as long as it's over 10mm it should be okay. Which means it complies with K1.2
Thanks. The thickness (for meshing and realism) is 20mm.
Re: Khamsin Virtual Racecar Challenge 2015
Posted: 15 Oct 2015, 17:42
by RicME85
Im with Wesley
Re: Khamsin Virtual Racecar Challenge 2015
Posted: 16 Oct 2015, 19:09
by cdsavage
I'd need to have a look at the model to say for sure. K3.2 states "The attachments must provide a realistic load path to the body of the car", so it's not only a matter of meeting the 10mm thickness.
Re: Khamsin Virtual Racecar Challenge 2015
Posted: 16 Oct 2015, 19:17
by CAEdevice
cdsavage wrote:I'd need to have a look at the model to say for sure. K3.2 states "The attachments must provide a realistic load path to the body of the car", so it's not only a matter of meeting the 10mm thickness.
Thanks Chris, if I decide to use that configuration, I'll prove the structural realism with a FEM simualtion (static + modal analysism, using multi directional carbon fiber). At the moment it gives some advantages, but I have other problems to solve (can't find the idea to improve the floor/diffuser efficiency from the latest race...).
Re: Khamsin Virtual Racecar Challenge 2015
Posted: 17 Oct 2015, 10:31
by MadMatt
Interesting Matteo! Which FEA software are you using for composites?
Re: Khamsin Virtual Racecar Challenge 2015
Posted: 17 Oct 2015, 11:01
by CAEdevice
MadMatt wrote:Interesting Matteo! Which FEA software are you using for composites?
Creo Simulate (in the past I used NEiNastran, but I don't have a license now)
Re: Khamsin Virtual Racecar Challenge 2015
Posted: 19 Oct 2015, 11:30
by CAEdevice
cdsavage wrote:A few more images of the top 3:
[...]

I was wondering... where are the front suspensions?
Re: Khamsin Virtual Racecar Challenge 2015
Posted: 19 Oct 2015, 11:53
by RicME85
I assumed just removed for the purpose of that image
Re: Khamsin Virtual Racecar Challenge 2015
Posted: 19 Oct 2015, 13:23
by wesley123
I would agree except for the fact that the other 2 shown do have the suspension arms mounted
Re: Khamsin Virtual Racecar Challenge 2015
Posted: 19 Oct 2015, 15:18
by JJR
It´s completly covered with body and moved 100mm upwards.
CAEdevice wrote:
I was wondering... where are the front suspensions?