After importing URDF，the collision detection is not work

Omniverse Isaac Sim
1

I imported the file using URDF Importer and added the Follow Target for the robot according to the tutorial, but it seems that there is no collision detection between the robotic arm and base_link, and there is also no collision detection between arms. But when I drag the ground upwards, it seems that there exist collision between the two arms and the ground.

How to fix it? Thans a lot!

Here is the URDF importer param, it all keeps default besides the 'Fix Base Link ’ because there is a mobile base for the robot.

Here is the image and vedio:

Isaac Sim Version

[√] 4.2.0

Operating System

[√] Ubuntu 20.04

GPU Information

  • Model: RTX4070laptop
  • Driver Version: 550.144.03
2

Please try using the latest version, Isaac Sim 4.5.0, and see if the issue persists.

3

Thanks for your replay! I will try the 4.5.0, I will feedback the new on any new developments.
By the way, if there are some problems in my import steps?