Physics — Isaac Sim Documentation
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Title: Physics — Isaac Sim Documentation
URL Source: https://docs.isaacsim.omniverse.nvidia.com/latest/physics/index.html
Published Time: Tue, 21 Oct 2025 19:24:40 GMT
Markdown Content: Physics#
On a high-level, simulations with Omniverse™ Physics work as follows:
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The USD Physics schema of robot and environment assets are parsed and corresponding objects are created in the PhysX SDK backend.
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Then, for each discrete-time step of the simulation, Physics advances the PhysX SDK objects given their current state and additional inputs such as, for example, control-policy torques.
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The updated state is written back to USD by default, where the state can be further processed by the user, a reinforcement-learning policy, or other extensions such as the Omniverse RTX Renderer.
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Omniverse™ Physics propagates runtime changes to physics parameters in USD to the PhysX SDK objects.
Tools#
- Physics Simulation Management
- Physics Inspector
- Physics Static Collision Extension
- Simulation Data Visualizer
- Physics Debug Window
Additional Resources#
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Omniverse™ Physics core documentation and programming guide
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USD Physics Schemas and PhysX SDK-engine-specific Physx Schemas
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Explore further Omniverse simulation extensions.
Links/Buttons:
- #
- Physics Simulation Fundamentals
- Physics in USD Schemas
- Simulation Timeline
- Configuring Frame Rate
- Configuring Simulation Timesteps
- Simulation Components
- Rigid Body
- Colliders
- Contacts and Friction
- Joints
- Articulation
- Stepping an OmniGraph with Physics
- Simulation Residuals
- Omniverse™ Physics and PhysX SDK Limitations
- Physics Simulation Management
- Physics Inspector
- Physics Static Collision Extension
- Simulation Data Visualizer
- Physics Debug Window
- core documentation
- USD Physics Schemas
- Physx Schemas
- simulation extensions
- PhysX SDK
- Omniverse Visual Debugger
- Flow: Fluid Dynamics
- NVIDIA Warp