Different sensor read with different physics engines
Posted: 20 Sep 2021, 09:19
Hi all, I'm trying to simulate the skin behaviour of a thigh getting hit by a sphere of \(10kg\).
The scene looks like this:
The skin is simulated with a spring/damper joint where K=\(5e^4\).(I found this value in some papers).
The top plate(Plate_dyn) weights \(0.2kg \) while the thigh (UpperLeg_dyn) it's about \(70kg\), in order to simulate the weight of the entire body supported by the leg.
The spring has a length of \(2cm\). Then I plot the force of that Prismatic_joint on a graph.
My question is: Why do I get such differences in the force when I use different physics engine? I know there might be some differences, but here the maximum force read with different engine:
- Bullet 2.78: 880 N
- Bullet 2.83: 365 N
- Newton: -220 N
The differences are huge.
The scene looks like this:
The skin is simulated with a spring/damper joint where K=\(5e^4\).(I found this value in some papers).
The top plate(Plate_dyn) weights \(0.2kg \) while the thigh (UpperLeg_dyn) it's about \(70kg\), in order to simulate the weight of the entire body supported by the leg.
The spring has a length of \(2cm\). Then I plot the force of that Prismatic_joint on a graph.
My question is: Why do I get such differences in the force when I use different physics engine? I know there might be some differences, but here the maximum force read with different engine:
- Bullet 2.78: 880 N
- Bullet 2.83: 365 N
- Newton: -220 N
The differences are huge.