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Hyperelastic modeling of a materiall

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Posts: 2
Topic starter
(@nicburgr63)
New Member
Joined: 12 years ago

Hello

Im looking for a model of a material named TangoBlack Fullcure 930 (a rapid prototyping material).

The main problem is that I dont have a lot of data about it (Tensile strenght, elongation at break, modulus of elasticity...).

Anyway, I found two papers on the internet from people who did some tests on the material (I attach them to this post).

Here is my problem :

For the first model : C10 = 6.7664 e-2 MPa and C01 = -9.1133 e-2 MPa. The other model is C10 = 9.1054 e-2 MPa and C01 = 5.3337 e-3 MPa.

In the first model, the sum of C01 and C10 is negative, so my simulation tools doesnt accept those parameters !

The second models seems to be working but it doesnt correspond to the experimental data from the first model...

Could you help me figuring the right model for this material ?

Thank you !

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Posts: 3998
(@jorgen)
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Joined: 5 years ago

What FE software do you use?
(Many FE programs can find hyperelastic constants for you).

-Jorgen

Topic Tags
3 Replies
Posts: 2
Topic starter
(@nicburgr63)
New Member
Joined: 12 years ago

[QUOTE=Jorgen,9657]What FE software do you use?

(Many FE programs can find hyperelastic constants for you).

-Jorgen

I would like to use Creo Element to simulate the deformation of the part. (But I have access to Patran/Nastran too)

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Posts: 3998
(@jorgen)
Member
Joined: 5 years ago

With that limited data set I would simply use the Neo-Hookean material model.
It is easy to use and always stable.

-Jorgen

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