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Comparing outputs between steps

Comparing outputs between steps

Comparing outputs between steps

(OP)
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.

RE: Comparing outputs between steps

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

RE: Comparing outputs between steps

(OP)
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.
 

RE: Comparing outputs between steps

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

RE: Comparing outputs between steps

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

 

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