Modeling some issues with importing Chrono using SolidWorks

[Jay Sun]

Hi,

My car in SolidWorks modeling a wheel, and then imported into the Chrono simulator, I refer to the official tutorial (https://api.projectchrono.org/tutorial_pychrono_demo_spider_robot.html). I encountered a problem in this process, after modeling in SolidWorks and importing into Chrono, the deformable ground could not carry the wheel, but fell directly with gravity. The following is my code（https://github.com/TTXDY/myrobot4.git）, please help me to look at it. Thank you very much!

Best,
Jay