maxroucool
Mechanical
- Apr 6, 2010
- 6
Hi all,
I would like to simulate stamping of composite laminates (I start with a simple lamina!).
The goal is to be able to see the re-orientation of fibers, possibly the appearance of wrinkles. Not much more in a first time...
To do that, I tried in a first approach to model it with classical elastic lamina material. Results are bad, as we expected.
Now I am trying to couple elastic elements (with resin's characteristics) to elements having a *FABRIC material assigned to it (with the glass fabric characteristics). These are superposed S4 elements sharing the same 4 nodes.
It works pretty much, but the problem is that *FABRIC material does not have any bending rigidity (from what I understood). Only traction, compression and shear. Thus, a lot of undesired (not real) wrinkles appear...
What can I do to take into account the fact that fibers have bending rigidity? Should I use VFABRIC routine (I would like to avoid this...) or do you have any other idea? Or should I choose a totally different approach?
What do you think about using shell with Rebar? It is made to model reinforced concrete, but do you think it could give good results. The problem is that there is no shear rigidity between rebars...
Thank you very much.
Best regards,
Max
I would like to simulate stamping of composite laminates (I start with a simple lamina!).
The goal is to be able to see the re-orientation of fibers, possibly the appearance of wrinkles. Not much more in a first time...
To do that, I tried in a first approach to model it with classical elastic lamina material. Results are bad, as we expected.
Now I am trying to couple elastic elements (with resin's characteristics) to elements having a *FABRIC material assigned to it (with the glass fabric characteristics). These are superposed S4 elements sharing the same 4 nodes.
It works pretty much, but the problem is that *FABRIC material does not have any bending rigidity (from what I understood). Only traction, compression and shear. Thus, a lot of undesired (not real) wrinkles appear...
What can I do to take into account the fact that fibers have bending rigidity? Should I use VFABRIC routine (I would like to avoid this...) or do you have any other idea? Or should I choose a totally different approach?
What do you think about using shell with Rebar? It is made to model reinforced concrete, but do you think it could give good results. The problem is that there is no shear rigidity between rebars...
Thank you very much.
Best regards,
Max
