Search results
Results From The WOW.Com Content Network
It can also be used to study issues of biomechanics, with applications including sports medicine, osteopathy, and human-machine interaction. [4] [5] [6] The heart of any multibody simulation software program is the solver. The solver is a set of computation algorithms that solve equations of motion.
Rigid body dynamics deals with the motion of objects that cannot change shape, size, or mass but can change orientation and position. To account for rotational energy and momentum, we must describe how force is applied to the object using a moment , and account for the mass distribution of the object using an inertia tensor .
Featherstone's algorithm is a technique used for computing the effects of forces applied to a structure of joints and links (an "open kinematic chain") such as a skeleton used in ragdoll physics. The Featherstone's algorithm uses a reduced coordinate representation.
In the physical science of dynamics, rigid-body dynamics studies the movement of systems of interconnected bodies under the action of external forces.The assumption that the bodies are rigid (i.e. they do not deform under the action of applied forces) simplifies analysis, by reducing the parameters that describe the configuration of the system to the translation and rotation of reference ...
A body is usually considered to be a rigid or flexible part of a mechanical system (not to be confused with the human body). An example of a body is the arm of a robot, a wheel or axle in a car or the human forearm. A link is the connection of two or more bodies, or a body with the ground.
Bullet is a physics engine which simulates collision detection as well as soft and rigid body dynamics.It has been used in video games and for visual effects in movies. Erwin Coumans, its main author, won a Scientific and Technical Academy Award [4] for his work on Bullet.
In order to define the twist of a rigid body, we must consider its movement defined by the parameterized set of spatial displacements, D(t) = ([A(t)], d(t)), where [A] is a rotation matrix and d is a translation vector. This causes a point p that is fixed in moving body coordinates to trace a curve P(t) in the fixed frame given by
A final modification to the SHAKE algorithm is the P-SHAKE algorithm [20] that is applied to very rigid or semi-rigid molecules. P-SHAKE computes and updates a pre-conditioner which is applied to the constraint gradients before the SHAKE iteration, causing the Jacobian J σ {\displaystyle \mathbf {J} _{\sigma }} to become diagonal or strongly ...