Comparing outputs between steps

[geo2006]

Hi everyone,

I'm modeling a stepped excavation to analyze the increments in deformation as soil is taken out. I've defined 4 steps and want to know not only the total defs, but also between steps. Is it possible to define an output like

Ux_1-2 = Ux_step2 - Ux_step1

in such way that I can see in the visualization module the field output Ux_1-2 directly?

Thanks in advance.

 

[gurmeet2003]

geo2006,

You can do this in 'Create Field Output' in the 'Tool' menu. However the created output field is temporary and can not be saved.

Gurmeet

 

[geo2006]

Thanks gurmeet2003,

I tried to apply your advise, but I can't combine the displacements of 2 or more steps. Using the "Create Field" and "Edit Field Output Request" menus I can select a variable, make a combination of them, etc, but I don't know how to specify 2 values from different steps. I suppose it's a simple problem, but I can't get it. Any suggestion?

Thank you very much.

 

[gurmeet2003]

geo2006,
Try the following expression:
s2f1_U-s1f1_U.
Above assumes that your displacements are in frame 1. Otherwise use the appropriate frame number.

Gurmeet

 

[geo2006]

Thanks, gurmeet. I tried your suggestion and worked fine. Now I'm getting good results faster. Thanks again.