Displacement results in radians

[Nitin77]

Hi all,

I am working with Ideas 11.Presently the displacements are shown in mm as I am using the units mm(newton ).I need to display the displacments the tangential (Circumferential)displacements in radians.

How can i achieve this in Ideas 11. Are there any options availabe wherin we can prefer the units of the results in Post processing Or in the visualizer.

Thanks,
Nitin

 

[rb1957]

i don't know Ideas, but if if gives you tangential displacement, and you know the radius, then you can calculate the displacement in terms of radians (or degrees)

 

[GregLocock]

I think you'll need to switch to cylindrical coordinates, or as rb1957 says, work it out yourself.

I rather suspect that option 2 is more likely to be succesful.

Cheers

Greg Locock

Please see FAQ731-376 for tips on how to make the best use of Eng-Tips.

 

[prost]

I understand the concept of tangential displacement, which will have units of Length (millimeter, inches, etc.). How can a displacement have units of radians? Radians is a measure of angle, like degrees. What does a displacement of X degrees or Y radians mean?

 

[rb1957]

it'd mean that the part has twisted (rotated) X radians

 

[Nitin77]

I am working with a simple disc with ID and a OD applying torque(tangential force at OD)and fixing the ID.I get the displacement pattern with diffrent colour bands at certain radii from ID to OD.At the OD as "S" is the displacement in mm.So if if I need to measur the same in angle ,i.e. by what angle a point A is displaced after applying torque in the tangential direction,is given by "S= r*Sin*Theta" where are r is the radius and theta the angle by which the point A is displaced.

 

[prost]

An angular rotation, 'twist' from my mechanics of materials book.