maunde wrote: ↑04 Jan 2020, 05:44
First of all cheers to Vyssion and yourself for your interpretation of the 2021 regs, it's always nice to see the pretty colours
I have a few questions:
1 - How did you go about modelling this car, what software did you use and what was your basic process: model the legal volumes than put something that fits within that? I assume you did individual parts seperately and blended them together (as mentioned in the regs)?
2 - This is more of a question for Vyssion but how did you plot your Lambda 2 for vorticity? I assume you used a vorticity core feature in Ansys, but how did you choose your Lambda value for the iso surface?
Thanks in advance, and keep up the great content!
Maunde
The car is modeled with OnShape which is a free online CAD package - IIRC the guys responsible were previously at Dassult and a lot of functionality is familiar from Solidworks even if the UI is considerably simplified. It's not bad, it's also not great, high quality surfacing can be a massive pain in the backside. There are certainly things I'd like to do better but can't, but it's free and beggars can't be choosers!!
I start as any team would, position the big masses, set a wheelbase, and produce the rules boxes. I have a basic engine model and create a simple gearbox case and radiators so I have internal things to wrap with the bodywork, which hopefully makes things a bit more realistic than some of the F1 CAD models I've seen. The bodywork then is a case of reading the rules and making sure it's legal. Each part is made in it's particular volume and then the car is assembled.
There are a few volumes missing in the current draft of the rules, some I think have yet to even be defined by the FIA; e.g. the part ahead of the drivers bum/crotch at the front of the floor, the plank, the side impact structures (a new single structure is going to replace the double impact spars), the more futuristic style halo (if it actually appears, the rules mention the current one we used), if there's a different cockpit entry template - so where those are we had to make some assumptions and tried to err on the side of caution.