2 model comparision

jakub.ziontek

Hi i have 2 results files, same node number and ID. Is it possible to plot model which is first model stress values  - second model stress values? So in the end i see model with stress values (first - second)?

 

 

regards
Jakub

Altair Forum User

Hi Jakub,

 

You can load models in two windows using page window layout option.

 

Please see the attached image

<?xml version="1.0" encoding="UTF-8"?>

jakub.ziontek

yes, that i know, but i would like to have 1 page with visualization values stress 1st model minus strresses of 2nd model

jakub.ziontek

there is no such possibility?

Altair Forum User

Hi Jakub,

 

This may not be possible with result math function in HyperView.

 

I am trying out a workaround with derived load steps options with type as linear superposition assuming you have linear static analysis results, you can have both result files a single HyperView window.

 

I will update you soon about my findings.

Altair Forum User

Hi Jakub,

 

The derived loadstep workaround is working for component stresses.

 

But, if you are looking at Vonmises combo, V1+V2 is not correct. In linear combination for Von Mises stress you don’t have to check on the scalar value but on the tensor. 

 

In the attached image the First image on the left is a linear superposition but with a negative scale factor. This means result1-result2 and this matches with the calculation.

 

 

<?xml version="1.0" encoding="UTF-8"?>

Altair Forum User

Steps for Workaround:

 

1) Load the First result file in HyperView and open Derived LoadStep panel

2) In derived loadsteps panel click result file and select the second result file, Now you should see two result files

3) Create a NEW derived loadstep of the type Linear superposition.

4)Select the first result file's load case and add this using the arrows in the panel. Make sure the constant scale factor is set to '1' for this

5) Repeat the same for the second result file's load case but this time the scale factor is '-1'

6) Click apply and Go to Loadstep Result browser and from the drop down select the Derived loadstep you have created and contour for component stresses.

 

<?xml version="1.0" encoding="UTF-8"?>

jakub.ziontek

i found out... it is in Derived Results :-)

Altair Forum User

Hi Jakub,

 

Works either ways,

 

Thanks for the update,.

Altair Forum User

Hi,

Is there a way this could be done for a non linear analysis? for example the belt region of a tyre?

Altair Forum User

Hi,

 

Could you please explain in detail?