{"id":319139,"date":"2023-11-23T07:20:22","date_gmt":"2023-11-23T07:20:22","guid":{"rendered":"\/forum\/forums\/topic\/how-to-perform-a-sine-on-random-vibration-analysis-in-ansys-mechanical\/"},"modified":"2023-11-23T07:20:22","modified_gmt":"2023-11-23T07:20:22","slug":"how-to-perform-a-sine-on-random-vibration-analysis-in-ansys-mechanical","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/how-to-perform-a-sine-on-random-vibration-analysis-in-ansys-mechanical\/","title":{"rendered":"How to perform a sine-on-random vibration analysis in Ansys Mechanical ?"},"content":{"rendered":"<p>I need to perform sine on random analysis, as ansys has no direct provison to perform these. From my own search, i found thatthere is indirect ways, first is to add sine tones to Random Vibration PSD curve and use this equivalent PSD in analysis, and second one is to&nbsp; Perform a separate harmonic response and random vibration analysis and convert the harmonic response results to &ldquo;RMS&rdquo;&rdquo; values. Then statistically add the RMS results from the harmonic analysis to random vibration results.<\/p>\n<p>Can anyone guide for performin any one out of these above methods, my vibration profiles are given below.<\/p>\n<table class=\"MsoNormalTable\" style=\"border-collapse: collapse\" border=\"0\" width=\"326\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr style=\"height: 16.85pt\">\n<td style=\"width: 126.75pt;border: solid windowtext 1.0pt;border-right: solid black 1.0pt;padding: 0cm 5.4pt 0cm 5.4pt;height: 16.85pt\" colspan=\"4\" valign=\"bottom\" nowrap=\"nowrap\" width=\"169\">\n<p class=\"MsoNormal\" style=\"margin-bottom: .0001pt;text-align: center;line-height: normal\" align=\"center\"><span lang=\"EN-US\" style=\"color: black\">Sine Tones<\/span><\/p>\n<\/td>\n<td style=\"width: 117.55pt;border-top: solid windowtext 1.0pt;border-left: none;border-bottom: solid windowtext 1.0pt;border-right: solid black 1.0pt;padding: 0cm 5.4pt 0cm 5.4pt;height: 16.85pt\" colspan=\"2\" valign=\"bottom\" nowrap=\"nowrap\" width=\"157\">\n<p class=\"MsoNormal\" style=\"margin-bottom: .0001pt;text-align: center;line-height: normal\" align=\"center\"><span lang=\"EN-US\" style=\"color: black\">Broadband Spectrum<\/span><\/p>\n<\/td>\n<\/tr>\n<tr style=\"height: 16.85pt\">\n<td style=\"width: 56.55pt;border: solid windowtext 1.0pt;border-top: none;padding: 0cm 5.4pt 0cm 5.4pt;height: 16.85pt\" colspan=\"2\" valign=\"bottom\" nowrap=\"nowrap\" width=\"75\">\n<p class=\"MsoNormal\" style=\"margin-bottom: .0001pt;text-align: center;line-height: normal\" align=\"center\"><span lang=\"EN-US\" style=\"color: black\">Freq(Hz)<\/span><\/p>\n<\/td>\n<td style=\"width: 70.2pt;border-top: none;border-left: none;border-bottom: solid windowtext 1.0pt;border-right: solid windowtext 1.0pt;padding: 0cm 5.4pt 0cm 5.4pt;height: 16.85pt\" colspan=\"2\" valign=\"bottom\" nowrap=\"nowrap\" width=\"94\">\n<p class=\"MsoNormal\" style=\"margin-bottom: .0001pt;text-align: center;line-height: normal\" align=\"center\"><span lang=\"EN-US\" style=\"color: black\">Amp(g)<\/span><\/p>\n<\/td>\n<td style=\"width: 49.6pt;border-top: none;border-left: none;border-bottom: solid windowtext 1.0pt;border-right: solid windowtext 1.0pt;padding: 0cm 5.4pt 0cm 5.4pt;height: 16.85pt\" valign=\"bottom\" nowrap=\"nowrap\" width=\"66\">\n<p class=\"MsoNormal\" style=\"margin-bottom: .0001pt;line-height: normal\"><span lang=\"EN-US\" style=\"color: black\">Freq(Hz)<\/span><\/p>\n<\/td>\n<td style=\"width: 67.95pt;border-top: none;border-left: none;border-bottom: solid windowtext 1.0pt;border-right: solid windowtext 1.0pt;padding: 0cm 5.4pt 0cm 5.4pt;height: 16.85pt\" valign=\"bottom\" nowrap=\"nowrap\" width=\"91\">\n<p class=\"MsoNormal\" style=\"margin-bottom: .0001pt;line-height: normal\"><span lang=\"EN-US\" style=\"color: black\">Amp(g<sup>2<\/sup>\/hz)<\/span><\/p>\n<\/td>\n<\/tr>\n<tr style=\"height: 16.85pt\">\n<td style=\"width: 19.75pt;border: solid windowtext 1.0pt;border-top: none;padding: 0cm 5.4pt 0cm 5.4pt;height: 16.85pt\" valign=\"bottom\" nowrap=\"nowrap\" width=\"26\">\n<p class=\"MsoNormal\" style=\"margin-bottom: .0001pt;line-height: normal\"><span lang=\"EN-US\" style=\"color: black\">f1<\/span><\/p>\n<\/td>\n<td style=\"width: 36.8pt;border-top: none;border-left: none;border-bottom: solid windowtext 1.0pt;border-right: solid windowtext 1.0pt;padding: 0cm 5.4pt 0cm 5.4pt;height: 16.85pt\" valign=\"bottom\" nowrap=\"nowrap\" width=\"49\">\n<p class=\"MsoNormal\" style=\"margin-bottom: .0001pt;text-align: right;line-height: normal\" align=\"right\"><span lang=\"EN-US\" style=\"color: black\">3.5<\/span><\/p>\n<\/td>\n<td style=\"width: 23.65pt;border-top: none;border-left: none;border-bottom: solid windowtext 1.0pt;border-right: solid windowtext 1.0pt;padding: 0cm 5.4pt 0cm 5.4pt;height: 16.85pt\" valign=\"bottom\" nowrap=\"nowrap\" width=\"32\">\n<p class=\"MsoNormal\" style=\"margin-bottom: .0001pt;line-height: normal\"><span lang=\"EN-US\" style=\"color: black\">A1<\/span><\/p>\n<\/td>\n<td style=\"width: 46.55pt;border-top: none;border-left: none;border-bottom: solid windowtext 1.0pt;border-right: solid windowtext 1.0pt;padding: 0cm 5.4pt 0cm 5.4pt;height: 16.85pt\" valign=\"bottom\" nowrap=\"nowrap\" width=\"62\">\n<p class=\"MsoNormal\" style=\"margin-bottom: .0001pt;text-align: right;line-height: normal\" align=\"right\"><span lang=\"EN-US\" style=\"color: black\">0.0972<\/span><\/p>\n<\/td>\n<td style=\"width: 49.6pt;border-top: none;border-left: none;border-bottom: solid windowtext 1.0pt;border-right: solid windowtext 1.0pt;padding: 0cm 5.4pt 0cm 5.4pt;height: 16.85pt\" valign=\"bottom\" nowrap=\"nowrap\" width=\"66\">\n<p class=\"MsoNormal\" style=\"margin-bottom: .0001pt;text-align: right;line-height: normal\" align=\"right\"><span lang=\"EN-US\" style=\"color: black\">10<\/span><\/p>\n<\/td>\n<td style=\"width: 67.95pt;border-top: none;border-left: none;border-bottom: solid windowtext 1.0pt;border-right: solid windowtext 1.0pt;padding: 0cm 5.4pt 0cm 5.4pt;height: 16.85pt\" valign=\"bottom\" nowrap=\"nowrap\" width=\"91\">\n<p class=\"MsoNormal\" style=\"margin-bottom: .0001pt;text-align: right;line-height: normal\" align=\"right\"><span lang=\"EN-US\" style=\"color: black\">0.002<\/span><\/p>\n<\/td>\n<\/tr>\n<tr style=\"height: 16.85pt\">\n<td style=\"width: 19.75pt;border: solid windowtext 1.0pt;border-top: none;padding: 0cm 5.4pt 0cm 5.4pt;height: 16.85pt\" valign=\"bottom\" nowrap=\"nowrap\" width=\"26\">\n<p class=\"MsoNormal\" style=\"margin-bottom: .0001pt;line-height: normal\"><span lang=\"EN-US\" style=\"color: black\">f2<\/span><\/p>\n<\/td>\n<td style=\"width: 36.8pt;border-top: none;border-left: none;border-bottom: solid windowtext 1.0pt;border-right: solid windowtext 1.0pt;padding: 0cm 5.4pt 0cm 5.4pt;height: 16.85pt\" valign=\"bottom\" nowrap=\"nowrap\" width=\"49\">\n<p class=\"MsoNormal\" style=\"margin-bottom: .0001pt;text-align: right;line-height: normal\" align=\"right\"><span lang=\"EN-US\" style=\"color: black\">17.5<\/span><\/p>\n<\/td>\n<td style=\"width: 23.65pt;border-top: none;border-left: none;border-bottom: solid windowtext 1.0pt;border-right: solid windowtext 1.0pt;padding: 0cm 5.4pt 0cm 5.4pt;height: 16.85pt\" valign=\"bottom\" nowrap=\"nowrap\" width=\"32\">\n<p class=\"MsoNormal\" style=\"margin-bottom: .0001pt;line-height: normal\"><span lang=\"EN-US\" style=\"color: black\">A2<\/span><\/p>\n<\/td>\n<td style=\"width: 46.55pt;border-top: none;border-left: none;border-bottom: solid windowtext 1.0pt;border-right: solid windowtext 1.0pt;padding: 0cm 5.4pt 0cm 5.4pt;height: 16.85pt\" valign=\"bottom\" nowrap=\"nowrap\" width=\"62\">\n<p class=\"MsoNormal\" style=\"margin-bottom: .0001pt;text-align: right;line-height: normal\" align=\"right\"><span lang=\"EN-US\" style=\"color: black\">2.625<\/span><\/p>\n<\/td>\n<td style=\"width: 49.6pt;border-top: none;border-left: none;border-bottom: solid windowtext 1.0pt;border-right: solid windowtext 1.0pt;padding: 0cm 5.4pt 0cm 5.4pt;height: 16.85pt\" valign=\"bottom\" nowrap=\"nowrap\" width=\"66\">\n<p class=\"MsoNormal\" style=\"margin-bottom: .0001pt;text-align: right;line-height: normal\" align=\"right\"><span lang=\"EN-US\" style=\"color: black\">100<\/span><\/p>\n<\/td>\n<td style=\"width: 67.95pt;border-top: none;border-left: none;border-bottom: solid windowtext 1.0pt;border-right: solid windowtext 1.0pt;padding: 0cm 5.4pt 0cm 5.4pt;height: 16.85pt\" valign=\"bottom\" nowrap=\"nowrap\" width=\"91\">\n<p class=\"MsoNormal\" style=\"margin-bottom: .0001pt;text-align: right;line-height: normal\" align=\"right\"><span lang=\"EN-US\" style=\"color: black\">0.02<\/span><\/p>\n<\/td>\n<\/tr>\n<tr style=\"height: 16.85pt\">\n<td style=\"width: 19.75pt;border: solid windowtext 1.0pt;border-top: none;padding: 0cm 5.4pt 0cm 5.4pt;height: 16.85pt\" valign=\"bottom\" nowrap=\"nowrap\" width=\"26\">\n<p class=\"MsoNormal\" style=\"margin-bottom: .0001pt;line-height: normal\"><span lang=\"EN-US\" style=\"color: black\">f3<\/span><\/p>\n<\/td>\n<td style=\"width: 36.8pt;border-top: none;border-left: none;border-bottom: solid windowtext 1.0pt;border-right: solid windowtext 1.0pt;padding: 0cm 5.4pt 0cm 5.4pt;height: 16.85pt\" valign=\"bottom\" nowrap=\"nowrap\" width=\"49\">\n<p class=\"MsoNormal\" style=\"margin-bottom: .0001pt;text-align: right;line-height: normal\" align=\"right\"><span lang=\"EN-US\" style=\"color: black\">35<\/span><\/p>\n<\/td>\n<td style=\"width: 23.65pt;border-top: none;border-left: none;border-bottom: solid windowtext 1.0pt;border-right: solid windowtext 1.0pt;padding: 0cm 5.4pt 0cm 5.4pt;height: 16.85pt\" valign=\"bottom\" nowrap=\"nowrap\" width=\"32\">\n<p class=\"MsoNormal\" style=\"margin-bottom: .0001pt;line-height: normal\"><span lang=\"EN-US\" style=\"color: black\">A3<\/span><\/p>\n<\/td>\n<td style=\"width: 46.55pt;border-top: none;border-left: none;border-bottom: solid windowtext 1.0pt;border-right: solid windowtext 1.0pt;padding: 0cm 5.4pt 0cm 5.4pt;height: 16.85pt\" valign=\"bottom\" nowrap=\"nowrap\" width=\"62\">\n<p class=\"MsoNormal\" style=\"margin-bottom: .0001pt;text-align: right;line-height: normal\" align=\"right\"><span lang=\"EN-US\" style=\"color: black\">3.75<\/span><\/p>\n<\/td>\n<td style=\"width: 49.6pt;border-top: none;border-left: none;border-bottom: solid windowtext 1.0pt;border-right: solid windowtext 1.0pt;padding: 0cm 5.4pt 0cm 5.4pt;height: 16.85pt\" valign=\"bottom\" nowrap=\"nowrap\" width=\"66\">\n<p class=\"MsoNormal\" style=\"margin-bottom: .0001pt;text-align: right;line-height: normal\" align=\"right\"><span lang=\"EN-US\" style=\"color: black\">300<\/span><\/p>\n<\/td>\n<td style=\"width: 67.95pt;border-top: none;border-left: none;border-bottom: solid windowtext 1.0pt;border-right: solid windowtext 1.0pt;padding: 0cm 5.4pt 0cm 5.4pt;height: 16.85pt\" valign=\"bottom\" nowrap=\"nowrap\" width=\"91\">\n<p class=\"MsoNormal\" style=\"margin-bottom: .0001pt;text-align: right;line-height: normal\" align=\"right\"><span lang=\"EN-US\" style=\"color: black\">0.02<\/span><\/p>\n<\/td>\n<\/tr>\n<tr style=\"height: 17.7pt\">\n<td style=\"width: 19.75pt;border: solid windowtext 1.0pt;border-top: none;padding: 0cm 5.4pt 0cm 5.4pt;height: 17.7pt\" valign=\"bottom\" nowrap=\"nowrap\" width=\"26\">\n<p class=\"MsoNormal\" style=\"margin-bottom: .0001pt;line-height: normal\"><span lang=\"EN-US\" style=\"color: black\">f4<\/span><\/p>\n<\/td>\n<td style=\"width: 36.8pt;border-top: none;border-left: none;border-bottom: solid windowtext 1.0pt;border-right: solid windowtext 1.0pt;padding: 0cm 5.4pt 0cm 5.4pt;height: 17.7pt\" valign=\"bottom\" nowrap=\"nowrap\" width=\"49\">\n<p class=\"MsoNormal\" style=\"margin-bottom: .0001pt;text-align: right;line-height: normal\" align=\"right\"><span lang=\"EN-US\" style=\"color: black\">52.5<\/span><\/p>\n<\/td>\n<td style=\"width: 23.65pt;border-top: none;border-left: none;border-bottom: solid windowtext 1.0pt;border-right: solid windowtext 1.0pt;padding: 0cm 5.4pt 0cm 5.4pt;height: 17.7pt\" valign=\"bottom\" nowrap=\"nowrap\" width=\"32\">\n<p class=\"MsoNormal\" style=\"margin-bottom: .0001pt;line-height: normal\"><span lang=\"EN-US\" style=\"color: black\">A4<\/span><\/p>\n<\/td>\n<td style=\"width: 46.55pt;border-top: none;border-left: none;border-bottom: solid windowtext 1.0pt;border-right: solid windowtext 1.0pt;padding: 0cm 5.4pt 0cm 5.4pt;height: 17.7pt\" valign=\"bottom\" nowrap=\"nowrap\" width=\"62\">\n<p class=\"MsoNormal\" style=\"margin-bottom: .0001pt;text-align: right;line-height: normal\" align=\"right\"><span lang=\"EN-US\" style=\"color: black\">2.25<\/span><\/p>\n<\/td>\n<td style=\"width: 49.6pt;border-top: none;border-left: none;border-bottom: solid windowtext 1.0pt;border-right: solid windowtext 1.0pt;padding: 0cm 5.4pt 0cm 5.4pt;height: 17.7pt\" valign=\"bottom\" nowrap=\"nowrap\" width=\"66\">\n<p class=\"MsoNormal\" style=\"margin-bottom: .0001pt;text-align: right;line-height: normal\" align=\"right\"><span lang=\"EN-US\" style=\"color: black\">500<\/span><\/p>\n<\/td>\n<td style=\"width: 67.95pt;border-top: none;border-left: none;border-bottom: solid windowtext 1.0pt;border-right: solid windowtext 1.0pt;padding: 0cm 5.4pt 0cm 5.4pt;height: 17.7pt\" valign=\"bottom\" nowrap=\"nowrap\" width=\"91\">\n<p class=\"MsoNormal\" style=\"margin-bottom: .0001pt;text-align: right;line-height: normal\" align=\"right\"><span lang=\"EN-US\" style=\"color: black\">0.002<\/span><\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"template":"","class_list":["post-319139","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"I need to perform sine on random analysis, as ansys has no direct provison to perform these. 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