{"id":310948,"date":"2023-10-10T23:50:24","date_gmt":"2023-10-10T23:50:24","guid":{"rendered":"\/forum\/forums\/reply\/310948\/"},"modified":"2023-10-10T23:50:24","modified_gmt":"2023-10-10T23:50:24","slug":"310948","status":"publish","type":"reply","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/310948\/","title":{"rendered":"Reply To: Pre-stressed modal why changing end time causes natural frequency to change?"},"content":{"rendered":"<p>&lt;p style=&#8221;color: #252525;&#8221;&gt;Hi Weihan,&lt;\/p&gt;&lt;p style=&#8221;color: #252525;&#8221;&gt;Yes, this is the reason you are getting different natural frequencies, as the static structural data is coming at different time in Modal analysis. If you want to have the prestress data at the end of static structural, then you can change the option to program controlled, as I have shown above.&lt;\/p&gt;&lt;p style=&#8221;color: #252525;&#8221;&gt;&nbsp;&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-310948","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 Weihan,Yes, this is the reason you are getting different natural frequencies, as the static structural data is coming at different time in Modal analysis. If you want to have the prestress data at the end of static structural, then you can change the option to program controlled, as I have\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/310948\/\" \/>\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: Pre-stressed modal why changing end time causes natural frequency to change? | Ansys Learning Forum\" \/>\n\t\t<meta property=\"og:description\" content=\"Hi Weihan,Yes, this is the reason you are getting different natural frequencies, as the static structural data is coming at different time in Modal analysis. If you want to have the prestress data at the end of static structural, then you can change the option to program controlled, as I have\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/310948\/\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2023-10-10T23:50:24+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2023-10-10T23:50:24+00:00\" \/>\n\t\t<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n\t\t<meta name=\"twitter:title\" content=\"Reply To: Pre-stressed modal why changing end time causes natural frequency to change? | Ansys Learning Forum\" \/>\n\t\t<meta name=\"twitter:description\" content=\"Hi Weihan,Yes, this is the reason you are getting different natural frequencies, as the static structural data is coming at different time in Modal analysis. 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