


{"id":319459,"date":"2023-11-25T18:58:57","date_gmt":"2023-11-25T18:58:57","guid":{"rendered":"\/forum\/forums\/topic\/fail-to-find-a-converged-solution-for-the-stent-deployment-solution\/"},"modified":"2023-11-27T13:46:07","modified_gmt":"2023-11-27T13:46:07","slug":"fail-to-find-a-converged-solution-for-the-stent-deployment-solution","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/fail-to-find-a-converged-solution-for-the-stent-deployment-solution\/","title":{"rendered":"Fail to find a converged solution for the stent deployment solution"},"content":{"rendered":"<p>Hello,<\/p>\n<p>I&#8217;m trying to simulate the deployment of the stent and i&#8217;ve tried a lot of times but it always failed to find a converged solution for the deployment.<\/p>\n<p>The simulation is like in the image 1. The simulation has 2 steps. The first step i add a radial displacement also i<span class=\"Y2IQFc\" lang=\"en\"> added displacements Y=0 and Z=0 in the cylindrical reference of the stent on the 3 vertices in one end of the stent. So I was able to easily find a converged solution and in this step, the stent is well compressed. Second step, I deactivated the radial movement on the stent and the stent will touch the silicone cylinder (mock artery) but I cannot find the converged solution (image 2). I have already tried several methods or non-linear controls but in any case, it did not work. Can anyone help me resolve this problem please? Thank you so much.<\/span><\/p>\n<p><span class=\"Y2IQFc\" lang=\"en\">Some of the useful informations you can use:<\/span><\/p>\n<ul>\n<li><span class=\"Y2IQFc\" lang=\"en\">Superelastic Nitinol is used for stent <\/span><\/li>\n<li><span class=\"Y2IQFc\" lang=\"en\">The mock artery is assumed to be isotropic linear elastic (for now)<\/span><\/li>\n<li>Image 3 is the information about the substep of step 2<\/li>\n<li>Image 4 is the graph of times\/cumulative iteration ( the simulation were always stopped at the beginning of step 2)<\/li>\n<li>The simulation is in static and the large deflection is on.&nbsp;<\/li>\n<li>The simulation worked when the stent is assumed isotropic linear elastic and when the large deflection is off.<\/li>\n<\/ul>\n<p>Thank you for your help and help a good day\/evening.<\/p>\n<p><a class=\"wp-colorbox-image cboxElement\" href=\"\/forum\/wp-content\/uploads\/sites\/2\/2023\/11\/25-11-2023-1700938567-mceclip0.png\"><img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2023\/11\/25-11-2023-1700938567-mceclip0.png\"><\/a><\/p>\n<p><a class=\"wp-colorbox-image cboxElement\" href=\"\/forum\/wp-content\/uploads\/sites\/2\/2023\/11\/25-11-2023-1700938573-mceclip1.png\"><img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2023\/11\/25-11-2023-1700938573-mceclip1.png\"><\/a><\/p>\n<p><a class=\"wp-colorbox-image cboxElement\" href=\"\/forum\/wp-content\/uploads\/sites\/2\/2023\/11\/25-11-2023-1700938587-mceclip2.png\"><img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2023\/11\/25-11-2023-1700938587-mceclip2.png\"><\/a><\/p>\n<p><a class=\"wp-colorbox-image cboxElement\" href=\"\/forum\/wp-content\/uploads\/sites\/2\/2023\/11\/25-11-2023-1700938655-mceclip4.png\"><img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2023\/11\/25-11-2023-1700938655-mceclip4.png\"><\/a><\/p>\n","protected":false},"template":"","class_list":["post-319459","topic","type-topic","status-closed","hentry","topic-tag-stent"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"Hello,I&#039;m trying to simulate the deployment of the stent and i&#039;ve tried a lot of times but it always failed to find a converged solution for the deployment.The simulation is like in the image 1. 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