Dynamics

Dynamics is concerned with the effects of forces on the motion of any and all objects, and controls the way objects and avatars interact and move relative to one another. A sound understanding of dynamics is essential for any physics engine.

Below, we offer a selection of links from our resource databases which may match this term.

Brain Emulator CFD Computational Fluid Dynamics Deformable Body Dynamics

Rigid Body Dynamics Soft Body Dynamics Soft Body Dynamics Engine

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Biped Robots > Petman
The Petman robot, created by Boston Dynamics, is a possible successor to BigDog. Built using the same engineering principles, it is essentially a two-legged version of the go-anywhere workhorse.

Quadruped Robots > LittleDog
Created by Boston Dynamics at request from DARPA, shortly after the BigDog pack mule prototype was created. LittleDog is a timid-looking four-legged robot about the size of a Chihuahua.

Simulating the Connection Between Fluid Droplets and a Solid Surface
German researchers develop a simulation that approaches fluid dynamics from a new angle. Considering the makeup of the solid structures the droplets hit, as every bit as important as the physics of the droplet itself.

VR Interfaces: Novint Falcon
Novint Falcon is a commercial grade haptics unit. Essentially, it is a 3D joystick that responds with the full range of force: Weight, shape, texture, dimension, dynamics and force effects.

Robot Dynamics Algorithms

Whilst over 30 years old now, this book is one of those whose usefulness is never likely to fade. It is a physics book, dealing with the mathematics and physical constraints of getting any rigid body jointed system to move as desired. Designed initially with robots in mind, long before the avatar, the maths contained within is ideal for grounding on ragdoll physics as used with avatars.

Quadruped Robots > Big Dog
BigDog, a creation of Boston Dynamics, is the poster child for quadruped robots. A large, bulky pack-bot, it is designed to go anywhere a human soldier can go, walkingh across any terrain, with four firm feet. It can walk on almost any surface, run on those same surfaces, recover from being whacked hard when standing still or running, and carry half a tonne with every step whilst it does all this.

Robot Cheetah breaks Legged Robot Land Speed Record
Modelled loosely on the design of the robot BigDog, Boston Dynamics' latest quadruped combat robot prototype manages to shatter a 23 year-old record for the fastest legged robot on Earth.

Modelling the Songbird's Vocalization Apparatus
Researchers at the University of Southern Denmark are tackling the virtual voice problem from the other end. They are attempting to understand how the zebra finch makes the noises it does, and accomplishes its range of sounds, by capturing the existing organs in its throat, modelling them in 3D, converting to a virtual environment and attempting to animate the model to produce the same sounds via fluid dynamics.

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