{"id":369824,"date":"2024-06-04T16:26:07","date_gmt":"2024-06-04T16:26:07","guid":{"rendered":"\/forum\/forums\/reply\/369824\/"},"modified":"2024-06-04T16:26:07","modified_gmt":"2024-06-04T16:26:07","slug":"369824","status":"publish","type":"reply","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/369824\/","title":{"rendered":"Reply To: Problems with fatigue calculations"},"content":{"rendered":"

<div>Hello, how do the element stress results compare to the S-N curve? Do the elements showing low fatigue life have higher stresses\/high damage ratio?<\/em><\/div><div> <\/div><div>- Sir, I have modified and simplified the SN curve for the test in this way, from the tensile strength of the material:<\/div><div> <\/div><div><\/div><div>Mises stress:<\/div><div><\/div><div> <\/div><div> <\/div><div>*CONTROL_TERMINATION, also see texpo parameter<\/em><\/div><div>- Sir, there is no such parameter<\/div><div><\/div><div> <\/div><div> <\/div><div>Regarding your question 3, expected fatigue cycles are computed as “expected fatigue life” times “zero-crossing frequency with positive slope”. For d3ftg generated in a time domain fatigue analysis, only cumulative damage ratio and expected fatigue life are provided. There is no “zero-crossing frequency” so no “expected fatigue cycle” is provided.<\/em><\/div><div> <\/div><div>- I understand sir, there will be no cycles. How then can I check the load, for example, for a task I will drill 10 mm, but I need to check the strength at 1000, how can I scale this? what maps or settings?<\/div><div> <\/div><div>___<\/div><div>PS<\/div><div><\/div><div> <\/div><div><span class=”HwtZe” lang=”en”><span class=”jCAhz”><span class=”ryNqvb”>Maybe I can upload a K-file here?<\/span><\/span> <span class=”jCAhz”><span class=”ryNqvb”>Can you watch it?<\/span><\/span><\/span><\/div><\/p>\n","protected":false},"template":"","class_list":["post-369824","reply","type-reply","status-publish","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t