Generating flexbody of wheel in contact with granular soil

Hi all,

I am trying to simulate the locomotion of a simple robot on granular soils, where the wheels have some flexible elements. I am using the FlexPrep tool in MotionView to generate the flexbody of the wheel. I am using MotionView coupled with EDEM to simulate the locomotion.

I do not know which settings are the best for generating the flexbody of a wheel. I am now using the default settings and use the Craig-Bampton synthesis type. Is the Craig-Chang method or the Craig Chang Contact method a better synthesis type to use for flexbody generations? I also used rigid RBE2 spiders to the center node of the wheel, where it is in contact with the axle. Is that correct, because in reality the axle also has a diameter, so the rigid connection is not ending in one point in the middle of the wheel.

As I understood from the help page, increasing the cut-off value would also increase the accuracy of the flexbody, but it also reduces the performance. I am now using a value of 10, should it be higher?

Kind regards,

Pim