FEA is quite easy with todays computers and software. The problem is figuring out the first impact direction/force and then 2nd, 3rd, 4th and so on.
The really bad issue with data collection is being able to sift out bad data from the good.
Sensor placement is critical for the accelerometers to work correctly.
IHMO, to really get the data to have meaning, sync'd video from outside the vehicle would be necessary (not on board).
In the past I have talked with many folks who collect data on race cars. They show me pretty curves and peak points, when asked why they are so slow, they don't have a clue. I worked for multiple days on one car and driver at Mid-Ohio. The only thing that would make the car faster would have been to change the driver. The Data guys just shrugged, the Goodyear rep just smiled and handed me the tire bill.