{"id":187870,"date":"2021-08-17T03:40:30","date_gmt":"2021-08-17T03:40:30","guid":{"rendered":"\/forum\/forums\/reply\/187870\/"},"modified":"2021-08-17T03:53:41","modified_gmt":"2021-08-17T03:53:41","slug":"187870","status":"publish","type":"reply","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/187870\/","title":{"rendered":"Reply To: How to perform two step dynamic analysis in Ansys Mechanical"},"content":{"rendered":"<p>Here is the F vs D plot where step 1 up to 0.1 s is gravity ramping up while the top rail is held fixed, then step 2 is the bottom rail moving up 30 mm. You can see that about 3 N is perfect force to be in the middle of the flat region.<br \/>\n<img loading=\"lazy\" decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/forum-uploads\/245\/9VCTITAUYUTL.png\" width=\"664\" height=\"632\" \/>Checking the mass, it is at the sweet spot of 0.30 kg.<br \/>\n<img loading=\"lazy\" decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/forum-uploads\/409\/DA0MZKLWUC07.png\" width=\"541\" height=\"260\" \/>Adjusting the mass up just slightly causes a gravity powered Static Structural solution to shoot well past the middle and end up on the far end of the flat. It is very difficult to adjust the mass to put it on the flat, especially with the wavyness.<br \/>\nTo answer your question on Damping, you should watch the videos in this course: <a href=\"\/courses\/index.php\/courses\/damping-effects\/\" target=\"blank\">\/courses\/index.php\/courses\/damping-effects\/<\/a><\/p>\n","protected":false},"template":"","class_list":["post-187870","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=\"Here is the F vs D plot where step 1 up to 0.1 s is gravity ramping up while the top rail is held fixed, then step 2 is the bottom rail moving up 30 mm. You can see that about 3 N is perfect force to be in the middle of the flat region.\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/187870\/\" \/>\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: How to perform two step dynamic analysis in Ansys Mechanical | Ansys Learning Forum\" \/>\n\t\t<meta property=\"og:description\" content=\"Here is the F vs D plot where step 1 up to 0.1 s is gravity ramping up while the top rail is held fixed, then step 2 is the bottom rail moving up 30 mm. You can see that about 3 N is perfect force to be in the middle of the flat region.\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/187870\/\" \/>\n\t\t<meta property=\"og:image\" content=\"https:\/\/innovationspace.ansys.com\/forum\/forum\/wp-content\/uploads\/forum-uploads\/245\/9VCTITAUYUTL.png\" \/>\n\t\t<meta property=\"og:image:secure_url\" content=\"https:\/\/innovationspace.ansys.com\/forum\/forum\/wp-content\/uploads\/forum-uploads\/245\/9VCTITAUYUTL.png\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2021-08-17T03:40:30+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2021-08-17T03:53:41+00:00\" \/>\n\t\t<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n\t\t<meta name=\"twitter:title\" content=\"Reply To: How to perform two step dynamic analysis in Ansys Mechanical | Ansys Learning Forum\" \/>\n\t\t<meta name=\"twitter:description\" content=\"Here is the F vs D plot where step 1 up to 0.1 s is gravity ramping up while the top rail is held fixed, then step 2 is the bottom rail moving up 30 mm. 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