Curvature units

Forum for OpenSees users to post questions, comments, etc. on the use of the OpenSees interpreter, OpenSees.exe

Moderators: silvia, selimgunay, Moderators

Post Reply
k.manoj
Posts: 26
Joined: Sun Nov 19, 2006 10:53 pm
Location: Tokyo Institute of Technology,
Contact:

Curvature units

Post by k.manoj »

Dear Dr. silvia:

I have a small question about units of the curvature. If I define my basic length unit as mm, what will be the units of curvature given by the recorder section deformation output. Is it (rad/mm) or (1/mm).

Thanks in advance
manoj
silvia
Posts: 3909
Joined: Tue Jan 11, 2005 7:44 am
Location: Degenkolb Engineers
Contact:

Post by silvia »

should be 1/mm
but test it out.
Silvia Mazzoni, PhD
Structural Consultant
Degenkolb Engineers
235 Montgomery Street, Suite 500
San Francisco, CA. 94104
silvia
Posts: 3909
Joined: Tue Jan 11, 2005 7:44 am
Location: Degenkolb Engineers
Contact:

Post by silvia »

by the way, rotation, for example, is inch/inch -- small deformation theory applies here, where theta=tan(theta)
Silvia Mazzoni, PhD
Structural Consultant
Degenkolb Engineers
235 Montgomery Street, Suite 500
San Francisco, CA. 94104
silvia
Posts: 3909
Joined: Tue Jan 11, 2005 7:44 am
Location: Degenkolb Engineers
Contact:

Post by silvia »

actually, it probabily is rotation/length = radians/length.....
again, it should give you the same results for small defo.
Silvia Mazzoni, PhD
Structural Consultant
Degenkolb Engineers
235 Montgomery Street, Suite 500
San Francisco, CA. 94104
hugo.esquivel
Posts: 71
Joined: Sat Nov 29, 2008 10:18 am
Location: -

Re: Curvature units

Post by hugo.esquivel »

There's not difference, since 1 rad is a pure number which doesn't need a unit symbol. So, for large or small deformations, you can use both.
Hugo Esquivel
Post Reply