Learning Forum

[dhirar313]

Hello, I'm currently doing fatigue crack analysis using SMART Crack Growth under Life Cycle Prediction Method (LC). From what i have read in the HELP section, function based loads and tabular loads with time as independent variable are not supported for fatigue crack growth analysis in SMART. So when I apply stress on my specimen, it is set to 'ramped' application. I had try to input load tabular data, but it really seem that it not supported in SMART. When I run the solution, the crack propagates and surprisingly there also number of cycles provided in the result. I have charted two graph from the result, and I really don't know whether the stress is apply in valid loading type (constant cycle) or cyclical loading type (stress magnitude changes after number of cycles). Also how can I obtain the charted graph of the stress cycle (stress vs time graph in cycle) from result? I have attach the two charted graph from the simulation result. 

Stress vs Time graph

 

Stress vs Number of Cycles graph

[tsiriaks]

I would recommend to ask this question in Physics Simulation  ->  Structural Mechanics  section to get more attention.

Thanks,

Win

[dhirar313]

alright, thank you.

[hakimshittu]

I have been trying to get the plots dhirar313 got but havent been able to instead I'm getting just one result for number of cycles probe. I am using ANSYS 19.1 version and I have followed every steps in setting up the SMART crack growth analysis function on workbench as described in these videos https://www.youtube.com/watch?v=8fy0hmTITEQ, https://www.youtube.com/watch?v=FqMsWXGUPAQ. Please find attached the screen shot of the results obtained as well as the ones expected. Is there a particular setting hat has been introduced in ANSYS 19.1 to make it produce these results? because I didn't miss any of the steps as described in the two videos which were using ANSYS 19.0.

[hoda2020]

I study fatigue crack growth on notched steel beam in my point of research. I used ansys workbench 19.2 to use SMART crack growth method. I read more in this method and found that load should be step applied not ramped applied. But l didn't find source to learn how to insert load as step applied. nand i watched the same video, dear hakimshittu, but it is not explained how this is donenplease, can clarify this partn