{"id":52011,"date":"2021-02-08T10:37:29","date_gmt":"2021-02-08T10:37:29","guid":{"rendered":"\/forum\/forums\/topic\/harmonic-analysis-reducing-computation-time-and-disc-usage\/"},"modified":"2021-02-08T10:37:29","modified_gmt":"2021-02-08T10:37:29","slug":"harmonic-analysis-reducing-computation-time-and-disc-usage","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/harmonic-analysis-reducing-computation-time-and-disc-usage\/","title":{"rendered":"Harmonic analysis – Reducing computation time and disc usage"},"content":{"rendered":"
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Hello,<\/p>\n

I am running a harmonic analysis on relatively big model of a building (all shell elements). I am using constant modal damping. The mesh is optimized and cant be reduced. In the model there is total number of 118284 nodes and 267954 elements.<\/p>\n

Modal analysis (for first 20 modes) takes around 15 minutes. Harmonic analysis (modal invironment) takes 120 minutes. The disc space usage during calculation is about 600 GB. I am suspecting that the program is calculating and storing unnecessary things like stress and strain. I only need to calculate 2 accelerations (x,y) FRF in a single point.<\/p>\n

1) In the Modal analysis setting – can I turn off the marked outputs, since all I need for Harmonic analysis are mode shapes and eigenfrequencies:<\/p>\n

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