Hello.
We are writing a master thesis on microstructures of composite materials and we want to combine the cohesive zone model (CZM) for delamination of fibres and the phase-field model (PFM) for matrix/fibre failure in Abaqus.
I started off by constructing a CZM for a very simple 2D unit cell, where I defined cohesive contact between two separate parts in an assembly; e.g. fibre and matrix.
My partner has tried to implement phase-field modelling and has found a code she can implement. However, the description states that the only way to make the code work is to have an assembly as one merged part.
I have tried to research possibilities but had no success in implementing a CZ surface for the model as a merged part consisting of fibre and matrix material. Do you have any suggestions on how to do it?
We want to use a cohesive surface, not elements, to make the model as simple as possible.
We are also very new to Abaqus, so any help or reference is welcome :)
Hi, You shouldn't merge parts. Instead, create two contact surfaces and define Surface-to-surface interaction with small sliding (Interaction > Create…). Also prescribe contact interaction property (Interaction > Property > Create…) including desired cohesive behavior (maybe with stiffness coefficients specified).
Hello Victor. Thank you for the answer.
I have done just that, but as I stated in my question, I need the parts to be merged in order to make the PFM code work. Is it possible to implement a cohesive surface for a merged part?
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