PhysX
NVIDIA PhysX? is an open source, scalable, multi-platform physics simulation solution supporting a wide range of devices, from smartphones to high-end multicore CPUs and GPUs.
The powerful SDK brings high-performance and precision accuracy to industrial simulation use cases from traditional VFX and game development workflows, to high-fidelity robotics, medical simulation, and scientific visualization applications.
Get PhysX In Omniverse Get PhysX Cpu Source On Github

Experience Powerful, Flexible Simulation
Unified Solver
PhysX provides a wide range of new features including FEM soft body simulation, cloth, particles, and fluid simulation with two way coupled interaction under a unified solver framework.
Scalability
PhysX offers a highly scalable simulation solution for gaming, robotics, VFX, and more. It provides a simulation that can be run on a wide range of platforms ranging from low-power mobile CPUs through to high-end GPUs, including a new GPU API targeting end-to-end GPU-based reinforcement learning.
Quality and Assurance
Through collision detection and the solver, PhysX offers simulation stability for more robust stacking and joints. PhysX also includes momentum conservation for the articulation system and gyroscopic forces in the rigid body system.
Physics Simulation SDK
NVIDIA PhysX core software developer kit (SDK) includes PhysX, Blast, and Flow.

PhysX
PhysX is available in NVIDIA Omniverse and as a BSD3 open source release, including all CPU source code and GPU binaries.

Blast
The NVIDIA PhysX SDK includes Blast, a destruction and fracture library designed for performance, scalability, and flexibility.
Flow
Flow enables realistic combustible fluid, smoke, and fire simulations. Flow is part of the PhysX SDK.
NVIDIA PhysX SDK Features Overview
Implemented on: | ||
---|---|---|
CPUs | NVIDIA GPUs | |
Rigid Body Dynamics | ✔ | ✔ |
Scene Query | ✔ | |
Joints | ✔ | ✔ |
Reduced Coordinate Articulations | ✔ | ✔ |
Vehicle Dynamics | ✔ | |
Character Controllers | ✔ | |
Soft Body Dynamics (Finite Element Method) | ✔ | |
PBD (liquid/cloth/inflatable/shape matching) | ✔ | |
Custom Geometries | ✔ | |
Blast - distributed with PhysX | ✔ | ✔ |
Flow - distributed with PhysX | ✔ |
Key PhysX Features
Rigid Body 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.

Scene Query
Perform spatial queries against the simulated world to permit perception and reasoning in a simulated environment. Combined with flexible filtering mechanisms, PhysX provides support for raycast, overlap, and sweep queries against the entire world or individual bodies.
Joints
Joints constrain the way bodies move relative to one another. PhysX provides a suite of common built-in joint types and supports custom joints 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. PhysX's implementation closely matches analytical models.
Vehicle Dynamics
PhysX provides accurate and efficient simulation of vehicles, including tire, engine, clutch, transmission, and suspension models.
Character Controllers
PhysX provides a kinematic character controller that permits an avatar to navigate a simulated world. It supports rich interactions with both static and dynamically simulated bodies.
Soft Body Dynamics
Finite Element Method (FEM) soft bodies simulate measurable properties of hyperelastic materials to form an accurate and efficient model 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. It is used extensively in the VFX industry.
Custom Geometry
PhysX provides a wide range of built-in geometries and, additionally, provides a flexible callback mechanism to allow the application to introduce their own geometry types into the simulation.
Industrial Applications for Features
Autonomous Vehicles | Game Development | HPC Visualization | Industrial Manufacturing | Industrial Applications | Robotics | VFX and Media | |
---|---|---|---|---|---|---|---|
Rigid Body Dynamics (TGS or PGS solver) | ✔ | ✔ | ✔ | ✔ | ✔ | ||
Scene Query | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ |
Joints | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | |
Articulations | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ |
Vehicle Dynamics | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | |
Character Controllers | ✔ | ✔ | ✔ | ✔ | |||
Soft Body Dynamics | ✔ | ✔ | ✔ | ✔ | ✔ | ||
Position Based Dynamics | ✔ | ✔ | ✔ | ✔ | |||
Flow | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | |
Blast | ✔ | ✔ | ✔ |
See PhysX in Action
Latest PhysX News

February 8, 2023
Building Simulation-Ready USD 3D Assets in NVIDIA Omniverse

December 7, 2022
Reinforcing the Value of Simulation by Teaching Dexterity to a Real Robot Hand

November 8, 2022
Anyone Can Build Metaverse Applications with New Beta Release of NVIDIA Omniverse

November 8, 2022
Open Source Simulation Expands with NVIDIA PhysX 5 Release
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Physically Accurate Simulation
Omniverse is a platform built from the ground up to be physically based and integrated with core technologies including MDL for materials, PhysX, Flow, and Blast for physics, and RTX technology for real time ray and path tracing. Omniverse features several core apps tailored to accelerate specific workflows.
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