Dynamic/Kinematic Motion Simulation explanation?
Dynamic/Kinematic Motion Simulation explanation?
(OP)
Hello,
When making a motion simulation, there is a point where the user is asked to choose the environment: Dynamic of Kinematic. I've been having some trouble understanding the Kinematics part. When i try to use the kinematics environment I always get the error message that there are degrees of freedom left. But doesn't it mean that having no degrees of freedom left, there can be no movement? But to my knowledge, kinematics is the study of movement.
I usually always use the dynamics option but i was curious as to when i should actually use the kinematics option instead. The NX documentation only confuses me more.
Could anyone clarify this for me?
When making a motion simulation, there is a point where the user is asked to choose the environment: Dynamic of Kinematic. I've been having some trouble understanding the Kinematics part. When i try to use the kinematics environment I always get the error message that there are degrees of freedom left. But doesn't it mean that having no degrees of freedom left, there can be no movement? But to my knowledge, kinematics is the study of movement.
I usually always use the dynamics option but i was curious as to when i should actually use the kinematics option instead. The NX documentation only confuses me more.
Could anyone clarify this for me?





RE: Dynamic/Kinematic Motion Simulation explanation?
Kinematics does not use gravity or anything other than the joints and driving inputs you define to drive the mechanism. As a result, it requires zero degrees of freedom to operate. The issue you have is that where there are any degrees of freedom, because gravity and momentum etc. are not taken into consideration, the solver doesn't know what should happen.
Chris Abbott
TEAM Engineering
www.team-eng.com
RE: Dynamic/Kinematic Motion Simulation explanation?
Dynamics is much more rigid in terms of the outputs you get, but is a much more realistic representation of the problem.
Chris Abbott
TEAM Engineering
www.team-eng.com
RE: Dynamic/Kinematic Motion Simulation explanation?
Thanks for the quick reply!