{"id":389213,"date":"2024-10-11T07:50:57","date_gmt":"2024-10-11T07:50:57","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/why-the-equivalent-von-mises-stress-is-excessivly-high-for-non-linear-nitinol\/"},"modified":"2024-10-11T07:50:57","modified_gmt":"2024-10-11T07:50:57","slug":"why-the-equivalent-von-mises-stress-is-excessivly-high-for-non-linear-nitinol","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/why-the-equivalent-von-mises-stress-is-excessivly-high-for-non-linear-nitinol\/","title":{"rendered":"Why the Equivalent (von-Mises) stress is excessivly high for non-linear Nitinol?"},"content":{"rendered":"

<p>Hi there,<\/p><p>I am currently performing stress analysis on a Nitinol self-expanding stent, following the guidelines provided in the course found at https:\/\/learninghub.ansys.com\/learn\/courses\/574\/self-expanding-stents<\/a>. I successfully replicated the entire model (see Fig. 1). <\/p><p>\"\"<\/p><p>However, when modeling my own different geometries using only the crimping analysis module, I am encountering an issue where the von Mises stress reaches a value of 2451 MPa, which is unexpectedly high \ud83d\udc47.<\/p><p><\/p><p>Despite this, both the equivalent plastic strain and elastic strain are within the acceptable range of 5-7%. Could you please advise if this might be an issue related to my geometry or a potential contact-related problem or any other else?<\/p><p>I would greatly appreciate your insight on this matter.<\/p><p>Kind regards,<br>Farhana Yasmin<\/p><\/p>\n","protected":false},"template":"","class_list":["post-389213","topic","type-topic","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