I am just doing this as an at home project.
Somehow I figured out how to do the crash test with decent results a few days ago. I designed a crash structure for the frame. After some tests I could only muster up a deceleration of about 30 g's in the first 16cm of deformation.I think Formula 1 is 10g's in the first 16cm.
I used a simple method (coincidentally similar to what you suggested
) to estimate the inertial loads on the frame in the deceleration of the crash test, and since the vehicle is hitting a wall, i just put the restraints at the front. Assumed that all the different masses in the car where attached to the frame at certain points. Then applied pre-calculated inertial forces at those points. Crude but the results look Ok.
This is my crash test:
I tested the crashbox first (that 1200kg block in the back represents the car).The test resulted 30 g's deceleration in the first 16cm of deformation. THe crash box is Aluminum skin and PE Foam on the inside.
You can see my crude estimates of the inertial loads. The restraint is at the front.
The deflections and stresses seemed reasonable here so I left the crash test at that. You see those two red members at the front of the tunnel, they were triangulated afterward.
The Turning scenario now, yup It's hard to think out. I thought of using the same method too.... but It didn't strike me to use the hubs/pickup points.
I will try it and return.
"I was blessed with the ability to understand how cars move," he explains. "You know how in 'The Matrix,' he can see the matrix? When I'm driving, I see the lines."