Cervenka Consulting Forums — Modelling Foam

Re: Modelling Foam

null@example.com (dpryl) — Mon, 13 Feb 2012 12:42:02 +0000

To model foam as NLCem2 is quite unusual. If you need some nonlienar response of the foam, I would recommend to use the von Mises material (originally developed for plastic steel).

Re: Modelling Foam

null@example.com (gjsopal) — Wed, 08 Feb 2012 14:14:02 +0000

Thanks for the guidance.

I modelling a foam which is transferring stresses between concrete surfaces. What kind of basic material should I define for foam (isotropic or nonlinear cementitous)? I tried to define it as cementitous with low modulus of elasticity. But seems need to define appropriate GAP elements to make the forces transfer.

Sincerely,

Re: Modelling Foam

null@example.com (dpryl) — Tue, 07 Feb 2012 09:08:02 +0000

What kind of situation are you modelling? In most typical cases, foams used for insulation or to save weight can be modelled elastic with a relatively low Young modulus (e.g., 1/10-1/100 of the concrete E modulus) and a perfect connection to the surrounding concrete.

For modelling interfaces between 2 materials (volume macroelements), see the ATENA 3D User's and Theory manuals with information about the Interface (GAP) material model.

Modelling Foam

null@example.com (gjsopal) — Mon, 06 Feb 2012 16:52:07 +0000

Can a foam and foam-concrete bond model be built in ATENA engineering?

Thanks,