Learning Forum

[sahua1]

Hi, is there any limit to time steps in the static structure? I defined the time step till 143. I am getting absurd results in the end. 

The problem only happens when I use nonlinear material. With nonlinear material, I have at least 4 substeps in each step.

If I use a smaller number of time points like 11 with the same loads as the end steps of the previous case, I get correct results.

[Ashish Khemka]

Hi,

Please see if the following link helps: You don’t wanna step to this: Breaking down Loadsteps and Substeps in ANSYS Mechanical - PADT (padtinc.com)

Regards,

Ashish Khemka

[sahua1]

Hi Ashish, Thanks for the response.

I tried it. But my issue is still not resolved. I have multiple loads, which are independent of each other.

When any of the loads reach a point where the stresses are above yield, the next step does not give correct results. While it provides proper results when I solve just that time step. 

I want the results of each step at a single results file so that I can carry out the fatigue simulation.

Do you have any more suggestion for me.

Regards,

Ashish Sahu

 

[Ashish Khemka]

Hi Ashish,

From a single result file, you can select the step for which the result is to be read. By the way which tool are you using for fatigue simulation? I think the fatigue simulation tool should give the option for which step results are to be used. Can you please check on the same?

Regards,

Ashish Khemka

 

 

 

[sahua1]

Hi Ashish, Thanks for the suggestion. I am using nCode. Yes, the fatigue tool gives the option, but it will be too much manual work. I have more than 500 steps and it could be more for different design, that is why I am using the tabular option to get the results for all loads in a single file.

I am trying to use "store results at the last point option" to avoid the intermediate steps for nonlinear analysis.