Rotation measure in MECHANICA

[twinnie]

I am wondering if anyone could state a simple procedure for determining the rotation of a point on a part in MECHANICA. I have set that measure up, but the result keeps coming back as zero radians, which I know isn't the case. I am wondering if I'm setting it up wrong.


Thanks!

 

[mechg]

Dear Twinnie,

If the point is connected to solid elements, then since solids do not have rotational degrees of freedom, the rotation at the point will be zero. If the point is attached to a shell or beam element, then rotations will be present - but be careful this will be the local rotation of the point, which is not nescessarily the same as the 'bulk' rotation. In either case it is better to measure the deflection at two points a known distance apart, then work out the rotation from that.

Regards,

Rod