Chrono::R3D
Galleries of animations


Chrono::R3D is a software tool for advanced physical simulation in an interactive 3D environment. Look the demo animations and demo pictures to understand what you can do with Chrono::R3D and Realsoft3D


Most animations have been computed in real-time (except for the rendering time, if using the high-quality raytracing of the host Realsoft3D).

NOTE: YOU NEED THE DIVX CODEC TO SEE THESE AVI FILES. If you do not have DivX installed, you can download it here.

Robotics
A spider robot
Simulation of a walking robot. This robot is made of 36 moving parts, for the mechanisms of the six legs. The six legs are actuated by 12 motors (6 rotational motors and 6 linear motors). Using the graphical tools of Chrono::Engine, we set periodic ChFunctions for the motion laws of each motor, thus simulating gaits. Collision detection is used for the feet/ground contacts .
The GRANIT robot
Simulation of the GRANIT robot. This automated device has been studied with Chrono::R3D in order to optimize the dynamical performance, then it has been built (hardware design by A.Tasora / controller design by P.Righettini, 2005). Rendering in Realsoft3D, modeling in SolidEdge.
A tenoning machine
Simulation of a parallel-kinematics robot with 5 degrees of freedom, aimed at the 'tenoning' process (wood milling). The Chrono::R3D plugin has been used to study the kinematical properties of this device.
A 6-DOF robot
Simulation of articulated robots, following straight trajectories in space. The Chrono::R3D plugin has been used to compute the inverse kinematics of the robots.
Various
A shaker
Simulation of a shaker, filled with 1000 spheres, which vibrates thank to an articulated mechanism. This is a part of a longer analysis which has been used to study a phenomenon called vibration-induced size-segregation. This demonstrates that Chrono::R3D can deal with a large number of colliding objects.
A sci-fi umbrella..
Dynamical simulation of a complex mechanical device. This umbrella-shaped mechanisms opens thank to an hidden spring-damper system.
The Watt tachymeter
Dynamical simulation of the famous Watt tachimeter: the more the angular velocity grows, the more the articulated mechanism opens and lifts a regulating rod (it can be used to control a motor by feedback). This simulation has been successfully used to validate the precision of the Chrono::Engine kernel: in fact numerical results match those coming from analytical formulas.
Bike running on stone slabs
Dynamical simulation of a bike running on an uneven pavement. The ragdoll has been built according to the antropometric data of the 'Winter man model'.
Two-stages epicicloidal reducer
Kinematic simulation of the inner part of a two-stages epicicloidal reducer. Note that Chrono::R3D could also simulate also bevel-gears.
Four-bar linkage
Dynamical simulation of a typical four-bar linkage. The shaft rotates thank to a motor model. Chrono::R3D here simulates also a digital controller with resolver feedback, which tries to keep the motor speed as constant as possible. Moreover, a revolute joint exploit some backlash. Reaction forces and vibrations have been outputted and studied.
Granular flow
Simulation of 15000 spheres falling into a container, where a rotating mixer is spinning on the vertical axis. More than 35'000 contact points are created, leading to a complementarity problem with more than 100'000 unknowns for each step. The animation shows the OpenGL viewer for the Chrono::Engine.
Stacking, friction, collisions
Falling boxes
This animation shows how the Chrono::Engine kernel can handle multiple contacts between stacking bodies with friction. Our HyperOCTANT technology can solve the non-linear complementarity problem in few milliseconds: about 1000 times faster than using the classical Dantzig/Lemke simplex method.
Collisions
A sphere collides with some buildings, causing a chain-effect...
This animation shows how Chrono::R3D handles many types of contacts and collisions, avoiding interpenetration. Also, a spherical joint is used too (see the swinging pendulum).
Destruction
Animation showing a low-motion destruction of brick-made walls (friction and gravity are not simulated).
Floor explosion
Animation showing a large object colliding with tiled blocks. Our HyperOCTANT technology is used to solve the non-linear complementarity problem (NCP) using a fast iterative method.
Sphere cascade
Animation showing 100 spheres falling onto an oddly-shaped static mesh. This simulation was used as a benchmark: our HyperOCTANT solver performed very well, solving the mixed NCP problems with almost one thousand of unknowns in real time.


Remember to look also the animations in the tutorials page!
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News
25 March 2008
Email addresses changed.

2 May 2007
Chrono::R3D plugin released!

1 May 2007
Revolution4D plugin released! (for free!)