I have rigged this wheelloader model in blender, the inverse kinematics work fine there. I am then using the alpha blender 4.2 branch to export the armatures to USD however when I do that the armature no longer works. Firstly the inverse kinematics completely dissappears and I dont know how to get that back. Second the body parts no longer move with the bones. I am using the “Bone” parent type in blender to attach parts to bones. Is this behaviour expected? How can I make sure my armatures work in isaac sim? I want to be able to use the replicator to randomize bucket position.
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Isaac Sim Version
4.2.0
4.1.0
4.0.0
2023.1.1
2023.1.0-hotfix.1
Other (please specify):
Isaac Lab Version (if applicable)
1.2
1.1
1.0
Other (please specify):
Operating System
Ubuntu 22.04
Ubuntu 20.04
Windows 11
Windows 10
Other (please specify):
GPU Information
Model: RTX 4090
Driver Version:
Topic Description
Detailed Description
(Describe the issue in detail, including what you were trying to do, what you expected to happen, and what actually happened)
Steps to Reproduce
Create a 4 bar linkage in blender alpha branch 4.2, using armatures. When assigning bones as parents to objects select the “bone” parent type
Export the model as USD with armature option and animation turned on
Open the USD in isaac sim and try to play with the 4 bar linkage
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Error Messages
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Screenshots or Videos
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Additional Information
What I’ve Tried
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Related Issues
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