LGDISP

Altair Forum User
Altair Forum User
Altair Employee
edited October 2020 in Community Q&A

Hello,

I have a Model with 2 Load Steps. I applied a force just in one direction with differnet magnitude .  For load step 1 =4000N and for load step 2= 10000N.

(I do not use CNTNLSUB)

 

I wonder, why the force vs. displacement curve is not equal for both load steps until 4000N. So the stresse are actually also not equal at the same force magnitude.

Do somebody has an idea?

 

Attached a Diagram of the 2 curves (force vs displacement), and the model files .fem and .h3d

 

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

 

Unable to find an attachment - read this blog

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Answers

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited March 2018

    Hi @Oli

     

    Thank you for sharing the files. I will check and update you soon. 

     

    But I think the load increments may be different for both subcases and this is the reason you see some offset

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited March 2018

    Thank you.

    Actually I checked it with smaller increments but the effect is the same. Keep me updated, please.

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