Thank you for answering so quickly. The pictures above show a static step, but I also tried implicit dynamic and it did not change anything.
Which solver controls would you recommend to change? I have basically no experience with this.
Hello,
I have a model consisting of three components: Fibre (Isotropic), Interface (Cohesive Elements) and Matrix (Ductile Damage).
If I run the model without the ductile damage, it works fine -> Interface fails
If I run the model without the interface, it works fine (second picture) ->...
Thank you for the quick answer :)
The thing is: I have to use µm as I ultimately want to analyze a representative Volume element for a fiber composite. So basically only the length is set.
Which consequent units would you use in that case? I am a complete novice so picked them in a way that...
Hello everyone,
I thought I had it figured out, but somehow my explicit model won't work. I have a very simple part (5x5):
with a relatively fine mesh (0.1):
Only Density, Elastic and Plastic properties were definded:
I somehow suspect, that the units are responsible. I use the...
Not even the step changed. Mentioning the implicit calculation probably only caused confusion, I just wanted to say, that the PBC did work in previous model.
What I have shown above (the working model) is already an explicit one. So I basically just changed the boundary conditions.
The .log...
Hello,
the title says it pretty much. I have an error message that I don't know how to address: REAL VALUE FOR PARAMETER RELATIVE MUST BE BETWEEN 2.22000E-16 AND 1.0000
I haven an explicit model that works fine with normal boundary conditions:
Fixed support at the bottom and displacement at...
Thank you very much. In the meantime this approach was successful.
But for anyone who just wants to use it: Abaqus has it already implement (I don't know, how I did overlook this for so long), though it is somewhat hidden: Porous Metal...
Hello everybody,
does someone have a UMAT code for Abaqus for the Gurson Tvergaard Needleman model for Abaqus and would be willing to share it?
I would like to use the model, but I am just getting started with Abaqus. It would be very helpful :)
Kind regards
Mike
+5.926e-01 for the second one (as it is still open - I assume it is the same for the first one - if it is important I check it). The geometry is modeled in µm. Will do so - but if anyone has an idea what causes this strange behavior I a
Thank you both for the elaboration.
@Compositepro: You are of course correct and I did not consider this aspect (I found out, that even the Abaqus does not consider compressive stress for damage initiation - I did no know that before and basically wanted to take care of that). However...
I have now a setup that looks like this:
What is now the best practice to combine the different components?
For the first time step I have to bind the green to the white (cohesive) and the white to the red area -> Should I use tie constraints for this?
And for when the cohesive layer fails I...
Hello everyone,
I am trying to model a fiber reinforced part:
This is a single part with internal boundaries. The white/grey area represent cohesive elements. Now I am wondering how I can deal with compressive failure of the cohesive elements.
Once the cohesive elements fail, there is no...
