In the XFEM technique used by Abaqus for describing a crack, only three propagation criteria are defined: MTS, normal to element 1 direction, normal to element 2 direction.
How could I define another criterion? Which kind of subroutine could I use?
I am performing a fatigue analysis (direct cyclic procedure) with XFEM crack growth. I would like to change modulus and strength of the material during the direct cyclic step after every cycle to simulate the oxidation process. I know the values of E and strength to attribute to the elements at...
I am making a model to predict the crack propagation due to termal stresses in a 2D micro-model (unit cell). I am using Abaqus v6.10 with XFEM technique.
After a quasi-static analysis of one cycle, the crack initiates but the subsequent thermal cycles do not make the crack propagate. The crack...
I got the model, but results are quite unrealistic since the cracks propagates from the matrix inside the fiber section. Do you know how to describe the interface between fibers and matrix in a 2D unit cell?
Hello,
I am modelling a 2D cell of a composite material using ABAQUS. I created a single part and assigned two different sections to fiber and matrix and then studied the crack initiation and propagation through XFEM analysis. The results that I get are quite unrealistic, since the cracks seems...
Hello,
I am struggling to get data for the transverse CTE and modulus of AS4 carbon fibers and Hexcel 8552 epoxy resin as a function of temperature. Do you know where could I get such data?
Thanks for your answer.
Hello everyone, I am performing a termal fatigue simulation on a 2D unit cell of composite material. I created a static,general step and, as predefined field, I inserted the temperature cycles (100 steps, each of them alternatively associated with max/min temperature of the cycle). The crack is...
I don't get how can I apply what you said...
The various parts of the model are expanding or contracting according to their coefficient of termal expansión. I would like to:
1) analyze the fatigue issue due to these cyclic thermal stresses directly using the same ABAQUS program
OR
2) run the...
Hello, I am quite new to ABAQUS and I am trying to analyze the effects of termal fatigue on the crack initiation and propagation in a 2D unite cell of composite material.
I made a program which calculates the termal stresses induced by the temperature cycles, using temp/disp. coupled elements...
