I am working on liquefaction analysis. Can you tell me how and on which surface, I should apply the earthquake load? Surface displacement or a surface load? The geometry is quite simple, with foundation soil 45*45*6 and dam over it of height 4.5. Moreover I want to ask when applying the prescribed displacement, i usually keep ux and uy as 1.00 m. Will it effect my result, or is it not necessary to keep it like that?
While applying surface load , what should be value of Sigma x, y and z.
The dynamic boundary conditions are viscous for x and y but the deformation boundary conditions are confusing. What should I do with that.
Kindly suggest a module from which I can get the information. Thanking in anticipation.
No problem, we have the same example in PLAXIS 3D, too:https://communities.bentley.com/products/geotech-analysis/w/plaxis-soilvision-wiki/45580/plaxis-3d-tutorial-09-free-vibration-and-earthquake-analysis-of-a-building
In any case, the theory and applications are the same in PLAXIS 2D and PLAXIS 3D.
Thanks a lot for the reply. You have suggested plaxis 2d tutorials. I am working on 3d. Will it be effective
Dear Aamir,
From your questions, I understand that you are interested in the basics of running a seismic analysis.
In short, you can apply the signal using a surface prescribed displacement.
My first suggestion would be to follow our tutorial example: https://communities.bentley.com/products/geotech-analysis/w/plaxis-soilvision-wiki/45568/plaxis-2d-tutorial-16-free-vibration-and-earthquake-analysis-of-a-building
Then, you can continue reading more on our Wiki pages, such as the following. Note that the last two links are from webinars we have recorded in the past.