{"id":165219,"date":"2022-01-02T14:12:08","date_gmt":"2022-01-02T14:12:08","guid":{"rendered":"\/forum\/forums\/topic\/evaluate-failure-in-composite-specimen\/"},"modified":"2025-01-16T10:15:43","modified_gmt":"2025-01-16T10:15:43","slug":"evaluate-failure-in-composite-specimen","status":"answered","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/evaluate-failure-in-composite-specimen\/","title":{"rendered":"Evaluate failure in composite specimen"},"content":{"rendered":"
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Hi everyone!<\/p>\n

I made a traction test of a composite specimen. I plotted the stress-strain curve and i want to identify the point where the failure occurs. I inserted inverse reserve factor but i have some questions about how it works: <\/p>\n

The IRF is the inverse of the safety factor, so it's the ratio between max stress and stress limit, but, if the IRF is related to the entire composite which are the stress limits? How can i use IRF to determine the failure stress of the composite?<\/p>\n

Another related question: i made two simulations, one with the damage initiation criteria and evolution law, and one without. If the damage occurs only when limits defined by a criteria are rached (I used Hashin), why the slope of the two curves (the one from damage and the one without damage) are different even before reaching the limit?<\/p>\n

Maybe these are dumb questions but i hope you'll help me. <\/p>\n

Thanks for your help!<\/p>\n","protected":false},"template":"","class_list":["post-165219","topic","type-topic","status-answered","hentry","topic-tag-damage-1","topic-tag-failure","topic-tag-s-1","topic-tag-static-structural"],"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