{"id":395170,"date":"2024-11-25T12:33:59","date_gmt":"2024-11-25T12:33:59","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/395170\/"},"modified":"2024-11-25T12:33:59","modified_gmt":"2024-11-25T12:33:59","slug":"395170","status":"publish","type":"reply","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/395170\/","title":{"rendered":"Reply To: Self-made car jack &#8211; static structural analysis"},"content":{"rendered":"<p>&lt;p&gt;Hi,&lt;\/p&gt;&lt;p&gt;I can&#8217;t see exactly where you&#8217;ve applied your joints\/contacts so you may not be doing too much wrong already but do you not need 16 revolute joints in total, one at each end of each arm?&lt;\/p&gt;&lt;p&gt;You could delete all of the contacts and apply fixed joints between the screw and the two parts it feeds through.&lt;\/p&gt;&lt;p&gt;With a fixed boundary condition on the bottom face of the jack base that should then be stable but not over constrained.&lt;\/p&gt;&lt;p&gt;&#8217;Joints are being used with large deflection turned off&#8217; I believe is an automatic message when using joints and in this case can be ignored as long as deformations look sensible in the results.&lt;\/p&gt;&lt;p&gt;Regards, Josh&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-395170","reply","type-reply","status-publish","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"Hi,I can&#039;t see exactly where you&#039;ve applied your joints\/contacts so you may not be doing too much wrong already but do you not need 16 revolute joints in total, one at each end of each arm?You could delete all of the contacts and apply fixed joints between the screw and the two parts it feeds\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/395170\/\" \/>\n\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 4.9.10\" \/>\n\t\t<meta property=\"og:locale\" content=\"en_US\" \/>\n\t\t<meta property=\"og:site_name\" content=\"Ansys Learning Forum | Ansys Innovation Space\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"Reply To: Self-made car jack \u2013 static structural analysis | Ansys Learning Forum\" \/>\n\t\t<meta property=\"og:description\" content=\"Hi,I can&#039;t see exactly where you&#039;ve applied your joints\/contacts so you may not be doing too much wrong already but do you not need 16 revolute joints in total, one at each end of each arm?You could delete all of the contacts and apply fixed joints between the screw and the two parts it feeds\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/395170\/\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2024-11-25T12:33:59+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2024-11-25T12:33:59+00:00\" \/>\n\t\t<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n\t\t<meta name=\"twitter:title\" content=\"Reply To: Self-made car jack \u2013 static structural analysis | Ansys Learning Forum\" \/>\n\t\t<meta name=\"twitter:description\" content=\"Hi,I can&#039;t see exactly where you&#039;ve applied your joints\/contacts so you may not be doing too much wrong already but do you not need 16 revolute joints in total, one at each end of each arm?You could delete all of the contacts and apply fixed joints between the screw and the two parts it feeds\" \/>\n\t\t<script type=\"application\/ld+json\" class=\"aioseo-schema\">\n\t\t\t{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/reply\\\/395170\\\/#breadcrumblist\",\"itemListElement\":[{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum#listItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/reply\\\/395170\\\/#listItem\",\"name\":\"Reply To: Self-made car jack &#8211; 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