How to simulate rubber material for solid element in NVH simulation?

Thanh Tung Ho

Hello,
Currently I am building a VTF simulation model to calculate vibration and I am having a hard time simulating the rubber material for the solid element of the damper. I can simulate rubber material through 1D element - CBUSH, but with solid element I really don't know how.
I want to ask if it is possible to simulate elastic material like rubber for solid element? and if so, how?

Thank you very much.

Brian_20847

Hi Tung,

You can use hyperelastic materials for rubber.

OptiStruct support some models of hyperelastic materials:

• Mooney-Rivlin
• Yeoh
• Arruda-Boyce
• Ogden
• HyperFoam
• Several other types of mathematical models.

You can create hyperelastic material through MATHE card and PLSOLID for solid element as an image below:

Thanks.

 

Thanh Tung Ho

Brian_20847 said:

Hi Tung,

You can use hyperelastic materials for rubber.

OptiStruct support some models of hyperelastic materials:

• Mooney-Rivlin
• Yeoh
• Arruda-Boyce
• Ogden
• HyperFoam
• Several other types of mathematical models.

You can create hyperelastic material through MATHE card and PLSOLID for solid element as an image below:

Thanks.

 

Hi Brian,

Thank you so much for answer my question. I have also read through a few documents related to elastic material simulation through the MATHE card. But it seems this card is only suitable for nonlinear simulation, while I am doing VTF simulation. Perhaps using 1D element as CBUSH and CVISC is suitable for simulation for rubber material.

Thanks.