Hi! Thank you for your time, attention, and support.
I am currently using FEM solver Abaqus to perform a set of balloon inflation simulations, trying to understand the deformation shape, stress, and strain when a positive pressure is applied to the internal chamber of the balloon.
The material I considered is silicone rubber Ecoflex30, with 900% elongation at break (https://www.smooth-on.com/tb/files/ECOFLEX_SERIES_TB.pdf); the material model I implemented is a built-in hyperelastic Neo-Hookean model; the type of element adopted is C3D10MH (i.e. standard, quadratic, 3D stress, hybrid formulation tet); I firstly considered a static step with nonlinear geometry on. The solver managed to simulate the inflation behavior until the max strain (LE) reaches to ~175%, then it aborts. I also tried with dynamic explicit step yet unrealistic deformation occurred after certain increments.
In this context, I am wondering if Abaqus itself is capable to perform such simulation, say if I need the strain reaches up to 300%? If not, any suggestions for a numerical solver that is effective for this kind of large inflation simulation?
Most FEM packages have the option of using explicit solvers. There are also smaller special purpose packages called BEM, Boundary Element Methods. Brebbia is a well known promotor of e.g. elastostatics.
You can try Madymo airbag simulation module.
Madymo is the software famous for human dummies application but also capable of explicit and coupled cfd calculation to handle the inflation of fabric airbag and then its impact with object.
Airbag does not elongate. IT GETS inflated shape( volume) when subjected to pressure. The individual elements do not get elongated...
- Badges
- Science topic