Difference between "User's Material Laws" and "Extended User Material Laws"

Jeugarcon
Jeugarcon Altair Community Member
edited October 2020 in Community Q&A

Hello, 

In 'RADIOSS User's Code Interface', there 2 types of usermat laws, one is  'User's Material Laws' and the other is 'Extended User Material Laws'.

 

1. What's the differences between the 2 different types? Or the latter 'Extended User Material Laws' is only a quantitative extension of the former 'User's Material Laws'? (That means someone can use more than 3 user-defined materials at the same time?)

 

2. If I only write one user-defined material, I can use any of them? It doesn't make any difference?

 

Could someone answer my doubt? Thanks a lot.

 

Best

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Answers

  • Andy_20955
    Andy_20955 New Altair Community Member
    edited April 2020

    Originally Radioss could only have 3 user material laws as described in User Material Laws 29, 30, 31. 

     

    Later, additional user material laws (99 max) could be created as Extended Material Laws.  The newer Extended material laws have newer features and  thus I would recommend creating one of the extended material laws.

    Thanks,

    Andy

  • Jeugarcon
    Jeugarcon Altair Community Member
    edited April 2020
    Altair Forum User said:

    Originally Radioss could only have 3 user material laws as described in User Material Laws 29, 30, 31. 

     

    Later, additional user material laws (99 max) could be created as Extended Material Laws.  The newer Extended material laws have newer features and  thus I would recommend creating one of the extended material laws.

    Thanks,

    Andy

    Thank you for your reply, Andy.

     

    Could you tell me some newer features in Extended Material Laws or share some documentations about it? Because in 'RADIOSS User's Code Interface 14.0 version', it says the variables in  Extended Material Laws are transferred through USERBUF, there's no detailed explanation.

    Thanks in advance.

     

    Best

     

  • Andy_20955
    Andy_20955 New Altair Community Member
    edited April 2020

    Hi,

    I would recommend updating to a newer version of Radioss.  Version 14 is very old.  The latest version is 2019.2.  I have attached the Radioss 2019 usercode pdf documentation.  I have also attached the usercode examples that are in the documentation.

    Thanks,

    Andy

    Unable to find an attachment - read this blog

  • Jeugarcon
    Jeugarcon Altair Community Member
    edited April 2020

    Thank you Andy! It really helps!

     

    Best

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