obtaining coefficients for ogden foam

[niziol.m]

Hi everybody,

I'm new in ANSYS simulations so maybe my problem is really trivial. 3
I have to simulate impact test of foam specimens in ANSYS Structural using Ogden material model(have to use Ogden model). I know that I need all coefficients to use (TB,HYPER,,,FOAM) function. I was trying curve fitting tools in different programs(also SolidWorks and Autodesk Algor Simulation) but couldn't obtain good approximation. I have uniaxial tension and compression stress-strain data but as I know model fitting for compression should be enough.

Is there any other way to obtain material model coefficients than tools I've been using? Maybe ANSYS also can help me if I have experimental data only or maybe I should find other program?

I would be really grateful if anyone have idea what I should do know. I can't start simulations without reliable material model.

Thanks in advance,

niziol.m

[Jorgen]

Good question. I always use the MCalibration software for material model calibration.
It is an advanced and easy to use program that has been designed to solve exactly the problem that you are interested in.

I can give you a free trial license if you are interested. Just send me a message.

-Jorgen