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Unexpected progresive rollover in Vehicle Simulation

User: "MBURE"
Altair Community Member

Hi,

I'm reaching out for help because it's been a couple of months, and I still can't find a solution or even an explanation for what's happening.

I'm simulating a constant-radius turn with constant acceleration, and at some point, the car starts to roll over. I've reviewed all the data and parameters, but I still don't understand the cause. The simulation shows a progressive rollover, so nothing seems technically wrong with the simulation calculation.

The center of gravity is extremely low (lower than in real life), and in reality, our car cannot flip, it even handles the same corner at higher speeds without issue. Nearly all real-world data has been imported, except for the moments of inertia and tires. Interestingly, when I adjust the weight of the steering column, the simulation becomes unstable, making it the only body assembly with incorrect mass properties.

If you could provide any explanation or insight into why this is happening, it would be a huge help.

Thanks in advance, have a nice day