Hi all,
After untyring efforts i was able to do modal analysis and i am happy that alot people are helping at this forum. Now the problem i am facing is that after modal analysis i am carrying our spectrum analysis. I have selected PSD as my spectrum analysis. I have all the statistical data of PSD table i.e Frequency Vs PSD. After entring the PSD table i have to apply the boundary conditions. I use following path to for Boundary Conditions.
Main Menu>>Preprocessor>>loads>>Define loads>>apply>>structural>>spectrum
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