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

Jeugarcon

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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Andy_20955

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

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

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

Thank you Andy! It really helps!

Best