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Different Mass on .OUT file and on imported file - Free Size Optimization

User: "Altair Forum User"
Altair Employee
Updated by Altair Forum User

Hello everyone,

 

I'm currently running an composite optimization on a part and today I noticed that the mass I get on the .out file and on the model I import after the size optimization is different.

 

On this optimization, I try to minimize the compliance of the part while constraining the mass between 3200g and 3600g.

 

Here is what I get on the .out file:

<?xml version="1.0" encoding="UTF-8"?>1635471183_outmass.thumb.png.8712cebc5a26dfea6146362c5e9d6361.png

 

Here is what I get on the imported model:

<?xml version="1.0" encoding="UTF-8"?>1399479077_HWMASS.thumb.png.305743e8bdce419f81c4c3ebb551eff0.png

 

While on the output file I get a total mass of 3600 as requested, when I import the model, the total mass is now 5322.

 

I've searched around, followed tutorials and nothing helped.

 

I tried opening the *.inc file as suggested on tutorial OS-3400 but the result is the same (the same as if I just import the .fem file resulting from the free size optimization).

 

I've looked on this forum and I found something about the CMF file instead but after the free size optimization, I only get the *.HM.ent.cmf and not the *.HM.comp.cmf as mentioned here:

https://community.altair.com/community?id=community_question&sys_id=6486883a1b2bd0908017dc61ec4bcbc5

 

I also tried running the optimization with MATINIT set to 1 on opticontrol but once again, the result is the same...

 

Can someone please help?

 

Thank you very much!

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