nArrayFirst of all, I looked at the Chapter 13 in the ANSYS Help documentation.nnThe notes I followed for the debonding setup from the documentation areIncluding CONTA172n
However, there is no difference in terms of results if I compare them when I include CONTA172 and do not include it.nnAugmented Lagrangian method or pure penalty method (KEYOPT(2) = 0 or 1)n
Pure Penalty has been already chosen for formulation criteria.nnBonded contact (KEYOPT(12) = 2, 3, 4, 5, or 6)n
Here is the cotact option as Bonded.nnBilinear material model to be includedn
Can you please tell me how I can include the bilinear models in the mechanical?.nBased on your suggestion, I configred a quite simple models where I used a pair of sheets. I investigated three different cases for which you can see the bondary conditions below.nSheets with physical gaps or without gap showed no difference in terms of results. In addition to that, I am also suspisious about the results when I see the animation for case I) where I applied 0.015mm displacement. You will see that he upper sheet is being buckled in a strange way; it bends upwards along the mid-section.nncase I)n
nstrange buckling behaviour)n
nanimation for case I)nArraycase II)n
nanimation for caseII)nArraycase III)n
nanimation for case III)nArraynPlease note that, for all, displayed results are animated in scale 16.nnI also conducted a convergence study on this simple model to figure out the optimum mesh size. In this convergence study, I used more than 150 design points ranging from 5mm to 0.0625mm. Below you will see the graphs for convergence analysis. I was expecting the curves to reach a plateu at a specific mesh size, see Figure 1). However, what I see is that the curves are continuously climbing as shown below in Figure 1) and in Figure 2).nn
nFigure 2)n
nnFigure 1)n
nI would apprecite it if you share your ideas.n
However, there is no difference in terms of results if I compare them when I include CONTA172 and do not include it.nnAugmented Lagrangian method or pure penalty method (KEYOPT(2) = 0 or 1)nPure Penalty has been already chosen for formulation criteria.nnBonded contact (KEYOPT(12) = 2, 3, 4, 5, or 6)nHere is the cotact option as Bonded.nnBilinear material model to be includednCan you please tell me how I can include the bilinear models in the mechanical?.nBased on your suggestion, I configred a quite simple models where I used a pair of sheets. I investigated three different cases for which you can see the bondary conditions below.nSheets with physical gaps or without gap showed no difference in terms of results. In addition to that, I am also suspisious about the results when I see the animation for case I) where I applied 0.015mm displacement. You will see that he upper sheet is being buckled in a strange way; it bends upwards along the mid-section.nncase I)nnstrange buckling behaviour)nnanimation for case I)nArraycase II)nnanimation for caseII)nArraycase III)nnanimation for case III)nArraynPlease note that, for all, displayed results are animated in scale 16.nnI also conducted a convergence study on this simple model to figure out the optimum mesh size. In this convergence study, I used more than 150 design points ranging from 5mm to 0.0625mm. Below you will see the graphs for convergence analysis. I was expecting the curves to reach a plateu at a specific mesh size, see Figure 1). However, what I see is that the curves are continuously climbing as shown below in Figure 1) and in Figure 2).nnnFigure 2)nnnFigure 1)nnI would apprecite it if you share your ideas.n
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