{"id":381672,"date":"2024-09-05T19:30:48","date_gmt":"2024-09-05T19:30:48","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/ques3\/"},"modified":"2025-02-27T10:35:30","modified_gmt":"2025-02-27T10:35:30","slug":"ques3","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/ques3\/","title":{"rendered":"ques3"},"content":{"rendered":"<p>&lt;div&gt;! Define parameters&lt;\/div&gt;&lt;div&gt;*SET, M1, 1.0&nbsp; &nbsp; &nbsp; &nbsp;! Mass 1&lt;\/div&gt;&lt;div&gt;*SET, M2, 1.0&nbsp; &nbsp; &nbsp; &nbsp;! Mass 2&lt;\/div&gt;&lt;div&gt;*SET, M3, 1.0&nbsp; &nbsp; &nbsp; &nbsp;! Mass 3&lt;\/div&gt;&lt;div&gt;*SET, M4, 1.0&nbsp; &nbsp; &nbsp; &nbsp;! Mass 4&lt;\/div&gt;&lt;div&gt;*SET, K1, 10.0&nbsp; &nbsp; &nbsp; ! Spring constant 1&lt;\/div&gt;&lt;div&gt;*SET, K2, 10.0&nbsp; &nbsp; &nbsp; ! Spring constant 2&lt;\/div&gt;&lt;div&gt;*SET, K3, 10.0&nbsp; &nbsp; &nbsp; ! Spring constant 3&lt;\/div&gt;&lt;div&gt;*SET, K4, 10.0&nbsp; &nbsp; &nbsp; ! Spring constant 4&lt;\/div&gt;&lt;div&gt;*SET, C, 0.5&nbsp; &nbsp; &nbsp; &nbsp; ! Damping coefficient&lt;\/div&gt;&lt;div&gt;&nbsp;&lt;\/div&gt;&lt;div&gt;! Define the model&lt;\/div&gt;&lt;div&gt;\/FILNAME, FourMassSystem, 1&lt;\/div&gt;&lt;div&gt;\/PREP7&lt;\/div&gt;&lt;div&gt;&nbsp;&lt;\/div&gt;&lt;div&gt;! Create nodes&lt;\/div&gt;&lt;div&gt;N, 1, 0, 0&lt;\/div&gt;&lt;div&gt;N, 2, 1, 0&lt;\/div&gt;&lt;div&gt;N, 3, 2, 0&lt;\/div&gt;&lt;div&gt;N, 4, 3, 0&lt;\/div&gt;&lt;div&gt;&nbsp;&lt;\/div&gt;&lt;div&gt;! Create elements (Spring elements)&lt;\/div&gt;&lt;div&gt;ET, 1, LINK180&lt;\/div&gt;&lt;div&gt;R, 1, K1&lt;\/div&gt;&lt;div&gt;R, 2, K2&lt;\/div&gt;&lt;div&gt;R, 3, K3&lt;\/div&gt;&lt;div&gt;R, 4, K4&lt;\/div&gt;&lt;div&gt;KEYOPT, 1, 1, 1&lt;\/div&gt;&lt;div&gt;KEYOPT, 2, 1, 1&lt;\/div&gt;&lt;div&gt;KEYOPT, 3, 1, 1&lt;\/div&gt;&lt;div&gt;KEYOPT, 4, 1, 1&lt;\/div&gt;&lt;div&gt;&nbsp;&lt;\/div&gt;&lt;div&gt;! Define element connectivity&lt;\/div&gt;&lt;div&gt;E, 1, 2&lt;\/div&gt;&lt;div&gt;E, 2, 3&lt;\/div&gt;&lt;div&gt;E, 3, 4&lt;\/div&gt;&lt;div&gt;&nbsp;&lt;\/div&gt;&lt;div&gt;! Define mass and damping&lt;\/div&gt;&lt;div&gt;MP, EX, 1, K1&lt;\/div&gt;&lt;div&gt;MP, EX, 2, K2&lt;\/div&gt;&lt;div&gt;MP, EX, 3, K3&lt;\/div&gt;&lt;div&gt;MP, EX, 4, K4&lt;\/div&gt;&lt;div&gt;MP, D, 1, C&lt;\/div&gt;&lt;div&gt;&nbsp;&lt;\/div&gt;&lt;div&gt;! Define boundary conditions&lt;\/div&gt;&lt;div&gt;D, 1, ALL, 0&lt;\/div&gt;&lt;div&gt;D, 4, ALL, 0&lt;\/div&gt;&lt;div&gt;&nbsp;&lt;\/div&gt;&lt;div&gt;! Apply loads (forces)&lt;\/div&gt;&lt;div&gt;F, 2, FX, F0 * SIN(omega * t)&lt;\/div&gt;&lt;div&gt;F, 3, FX, F0 * COS(omega * t)&lt;\/div&gt;&lt;div&gt;&nbsp;&lt;\/div&gt;&lt;div&gt;! Solution&lt;\/div&gt;&lt;div&gt;\/SOLU&lt;\/div&gt;&lt;div&gt;ANTYPE, 4&lt;\/div&gt;&lt;div&gt;SOLVE&lt;\/div&gt;&lt;div&gt;&nbsp;&lt;\/div&gt;&lt;div&gt;! Post-processing&lt;\/div&gt;&lt;div&gt;\/POST1&lt;\/div&gt;&lt;div&gt;PLDISP, 2&lt;\/div&gt;&lt;div&gt;&nbsp;&lt;\/div&gt;<\/p>\n","protected":false},"template":"","class_list":["post-381672","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=\"! Define parameters*SET, M1, 1.0 ! Mass 1*SET, M2, 1.0 ! Mass 2*SET, M3, 1.0 ! Mass 3*SET, M4, 1.0 ! Mass 4*SET, K1, 10.0 ! 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