Hi all,
I have never had this problem before when using ANSYS Classic but for this particular 3D model, when I plot the nodal contour plots, the elemental plot seems to be overlayed on the results (or vice versa). I want the contour plot to just show the volumes or areas even. If I go and play...
Hi everyone,
I have an interesting problem that has been plaguing me for a while now. I have a 2D model created using APDL which is a dynamic one in that each iteration, there is a moving part which moves based on its temperature until a certain convergence criteria is met for the temperatures...
Hi VzHache,
Thank you for your reply. I was using the Newton-Raphson method previously. It seems that the Newton-Raphson method is unsuitable when there is a change in slope.
Of the continuation methods you mentioned, Rik's method seems the most promising. Seeing as I haven't used this method...
Hi everyone,
I am modelling a material (Honeycomb) that exhibits stress-softening (reduction in yield stress with increasing strain after peak yield stress) behaviour when undergoing quasi-static compression.
I have tried to model this stress-softening behaviour in ABAQUS by trying both...
Hi all,
I have been trying for a while now to model the quasi-static compression of a natural fibre reinforced thermoplastic material honeycomb using ABAQUS. I have experimental data for both the quasi-static compression of the honeycomb and the material.
The problem arises in that the...
Hi,
The experimental data I am modelling shows stress-softening behaviour. However it seems that when specifying the stress-plastic strain data using the *plastic command, a curve following stress-softening cannot be input (ABAQUS gives the error: "The independent variables must be input in...
Hi Rob,
Thank you very much for the clarifications. I have decided to try either inputting plastic data using a isotropic hardening law or using a crushable foam model by obtaining the parameters from the experimental data. I will see how they go.
Once again thanks for the advice.
Hi rstupplebeen,
Thank you very much for your reply. I'm so sorry for the late reply, I just saw your post!
I have modelled the linear elastic case and ABAQUS results match up well with the experimental (true stress strain) data.
However post yield, my attempts at specifying the stress vs...
Hi all,
I am in need of some help with an elastic-plastic analysis of the compression of a honeycomb. The data I have available is the experimental compressive stress versus compressive strain results.
I am considering using a crushable foam plasticity model (please correct me if you can...
