Learning Forum

[Tim Fricke]

Hey guys,

I've been sitting at the pc for 3 days trying to reproduce the material curve from the tensile test with a material I created myself in Ansys. Unfortunately, I can't get it to work and I'm slowly getting desperate :D

The model in Ansys works. I was also able to load the curve from the experimental test into the signal processing (see picture).
I would now like to display various force-displacement curves in Optislang with a parameter study. So I can slowly approach the experimental curve.

Unfortunately, I can't get other curves to be displayed in the signal plot apart from the test curve.

What am I doing wrong or where is my mistake?

Best regards

Tim

[Ashish Khemka]

Hi Tim,

The stress-strain curve from analysis should be the same as the input material properties under engineering data. For a variation in load deflection curve are you modifying the material input as well?

Regards,

Ashish Khemka

[Tim Fricke]

Hi Khemka,

 

thanks for the answer. Yes i choose the nonlinear settings and the Gurson Model for the material failure. Like this below

For the first step i set the Gurso Parameter constant to focu on the course in the plastic and elastic area.

My goal is to get a signal plot like the picture below.

[Tim Fricke]

i think i need to creat the right responses in the ETK application but i dont know how to get the right Signals and how to work with them. Maybe someone has an idea ?

 

[Markus]

Hi Tim,

I think the man reason for seeing only one curve is the "Base path mode" in the "Variables" tab in the Signal Processing.
This is set to "Centrally registered". I would suggest the following: 
Can you 1) open the Signal Processing and 2) change that "Relative to project" by double clicking in the cell.

Please run it again, check the signal plot again and see if it is working now.

(By the way, you can use the calculator to extract values and derive new responses for the calibration,
e.g. here the calculator is used in a tutorial: Calibration of a Damped Oscillator (ansys.com)

I hope this helps,

Markus