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...
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...
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...
