1. [Home](/) [Omniverse](/omniverse) NVIDIA PhysX 2. - - - # NVIDIA PhysX Modeling digital twins of factories, cities, or entire worlds involves complex simulations that must accurately replicate the physical behavior of objects and systems, which are foundational in building [physical AI](https://www.nvidia.com/en-us/glossary/generative-physical-ai/) for powering the next generation of autonomous systems. NVIDIA PhysX® is a powerful, open-source multi-physics SDK that provides scalable simulation and modeling capabilities for robotics and autonomous vehicle applications. [Get PhysX in Omniverse ](/omniverse "Get PhysX in Omniverse")[Get PhysX Source on GitHub ](https://github.com/NVIDIA-Omniverse/PhysX "Get PhysX on GitHub")[Documentation ](https://docs.omniverse.nvidia.com/extensions/latest/ext_physics.html#overview "Documentation") ![NVIDIA PhysX SDK brings high-performance and accuracy to industrial simulation use cases](https://developer.download.nvidia.com/images/ov-physX-web-800x451.gif) PhysX based simulation of robots screwing nuts onto bolts, in Omniverse. * * * ## Key Benefits of PhysX ### Open-Source PhysX is fully open-source, enabling free use and sharing of your work with other developers, as well as contributing your innovative developments back to the community. ### Unified Model FEM soft body, cloth, particles, and fluid simulation with two-way coupled interactions under a unified solver framework. ### Scalable Runs on various platforms, from mobile CPUs to high-end GPUs, with a GPU API supporting end-to-end reinforcement learning via NVIDIA Isaac™ Lab. ### Accurate Enhanced simulation stability with robust collision detection, stacking, and joints, while also supporting momentum conservation and gyroscopic forces. * * * ## PhysX Features ### Rigid Body Dynamics Analyze multi-body dynamics under external forces like gravity. PhysX offers scalable rigid-body simulation for CPU and GPU, with proven industry performance. ![PhysX Feature - Scene Query](https://d29g4g2dyqv443.cloudfront.net/sites/default/files/akamai/nvidia-physx-scene-query.jpg) ### Scene Query Conduct spatial queries in simulated environments using the PhysX raycast, overlap, and sweep functions with customizable filtering. ### Joints Utilize a suite of common built-in joint types and support custom joints in PhysX through a flexible callback mechanism. ### Reduced Coordinate Articulations Reduced coordinate articulations provide a linear-time, guaranteed joint-error-free simulation of a tree of rigid bodies. ### Vehicle Dynamics Study the movement of multi-body interactions under external forces, such as gravity. PhysX provides industry-proven scalable rigid body simulation on both CPU and GPU. ### Character Controllers The kinematic character controller in PhysX permits an avatar to navigate a simulated world and supports both static and dynamically simulated bodies. ### Soft Body Dynamics Finite Element Method (FEM) simulation of soft bodies allows for accurate and efficient models of elastic deformable bodies. ### SDF Colliders A new Signed Distance Field based collision representation allows PhysX to simulate non-convex shapes like gears and cams without convex decomposition. ### Position-Based Dynamics Position-Based Dynamics provide a flexible framework for simulating a wide range of phenomena including liquids, granular materials, cloth, rigid bodies, deformable bodies, and more. ### Custom Geometry Utilize a wide range of built-in geometries and a flexible callback mechanism to allow custom geometry types into the simulation. ### Fracture & Destruction Blast, available in PhysX, is a destruction and fracture library designed for performance, scalability, and flexibility. ### Smoke & Fire Flow enables realistic combustible fluid, smoke, and fire simulations. Flow is part of the PhysX SDK. * * * #### Newton, the Next-Generation Open-Source Physics Simulation Engine Newton is an open-source, GPU-accelerated, and extensible physics engine, co-developed by Google DeepMind and Disney Research, and [managed by the Linux Foundation](https://www.linuxfoundation.org/press/linux-foundation-announces-contribution-of-newton-by-disney-research-google-deepmind-and-nvidia-to-accelerate-open-robot-learning). Built on NVIDIA Warp and OpenUSD, Newton is optimized for robotics and compatible with learning frameworks such as MuJoCo Playground or NVIDIA Isaac Lab. [Newton Beta](https://github.com/newton-physics) is now available to use. [Get Started on Newton](/newton-physics) ![](https://developer.download.nvidia.com/images/isaac/newton-ari.jpg) * * * ## PhysX Implementation | | CPUs | NVIDIA GPUs | | --- | --- | --- | | Character Controllers | | | | Custom Geometries | | | | Fracture and Destruction - PhysX Blast | | | | Joints | | | | PBD (liquid/cloth/inflatable/shape matching) | | | | Reduced Coordinate Articulations | | | | Rigid Body Dynamics | | | | Scene Queries | | | | Smoke and Fire - PhysX Flow | | | | Soft Body Dynamics (Finite Element Method) | | | | Vehicle Dynamics | | | * * * ## See PhysX in Action * * * ## PhysX News * * * ## Resources - [Read Documentation ](https://docs.omniverse.nvidia.com/) - [Access Training](https://www.nvidia.com/en-us/training/online/?activetab=ctabs-5) - [Connect on our Forums ](https://forums.developer.nvidia.com/c/omniverse/300/) - [Join the NVIDIA Developer Program ](/developer-program) * * * ## More Resources ![Decorative image representing Developer Newsletter](https://developer.download.nvidia.com/icons/m48-document-support-guide-2.svg) ### Read Documentation ![Decorative image representing Community](https://developer.download.nvidia.com/icons/m48-people-group.svg) ### Connect on Our Forums ![Decorative image representing Developer Newsletter](https://developer.download.nvidia.com/icons/m48-deep-learning-institute-talks-training-256px-blk.png) ### Access Training ![Decorative image representing Developer Program](https://developer.download.nvidia.com/icons/m48-developer-1.svg) ### Join the NVIDIA Developer Program ## PhysX in NVIDIA Omniverse PhysX is the primary physics engine of [NVIDIA Omniverse™](https://developer.nvidia.com/omniverse), a platform of APIs and SDKs for building complex 3D and industrial digitalization workflows based on [OpenUSD](https://www.nvidia.com/en-us/omniverse/usd/). NVIDIA [Isaac Sim](https://developer.nvidia.com/isaac/sim)™ and [Isaac Lab](https://isaac-sim.github.io/IsaacLab/) are two robotics reference applications built on Omniverse, which enable developers to build physical AI to power next-generation robots. [Explore Omniverse](/omniverse)