MAT Card for ROHACELL solid foam?

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

Hi all,

 

As a part of structural simulation of a wing section, I use aluminium alloy (works perfectly) and foam (facing problems) material in my simulation.

 

Foam properties are downloaded from official ROHACELL website (attached screenshot) which are used in aircraft.

 

(Refer screenshot) We have 3 different materials as mentioned below

 

ROHACELL 31A: E = 36, G=13 & nu = 0.384615 (Calculated using this formula nu= E/2G - 1)

ROHACELL 51A: E = 70, G= 19 & nu = 0.8421

ROHACELL 71A: E = 92, G = 29 & nu = 0.5862

 

I wanted to use 51A material, Is there an appropriate MAT Card for these kind of material parameters?

 

Thanks in advance.

 

Regards,

Sachin.

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Answers

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited August 2017

    Hi Sachin,

    Please try with /MAT/LAW33, which is used to model visco-elastic plastic foam material. This law is applicable only for solid elements and is typically used to model low density, closed cell polyurethane foams such as impact limiters.

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