This topic needs a much better title

[sk_astroman]

hi all,


pls can anybody clear me that what is Redundancy in mechanism.


ie, when i usingCylinder and Planar constrains insteed of Pin jointsa Redundancy of 2 is resulting. but felt that conceptualy constrains are same for both. Pls clear me abt this...


-astroman

 

[jbuckl]

degrees of freedom


each connection type has a specific rotation and translation degree of freedom assigned to it.


The connection types and their degrees of freedom in both rotation and translation are shown below:-


Connection type; Degrees of freedom; Description


rotati on, translation


rigid 0&nbsp ; 0 component has no motion relative to other component.


pin 1&nbsp ; 0 component rotates about an axis.


slider 0&nbsp ; 0 component translates along an axis.


cylinder 1 1 component translates along and rotates about an axis


planar 1 2"can move in a plane + rotate about an axis normal to a plane


ball 3&nbsp ; 0 component rotates about a point


bearing 3 1component rotates about a point and translates along an axis


weld 0 0 component has no motion relative totheother component