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Thanks GeoEnvGuy for your suggestion. I am doing an advanced stage of liquefaction with a phenomenon of mass flow with a very gentle slope of 1 - 2 degree, and to see the effect of pore pressure.

Hi All, Can Strand7 be used for performing liquefaction analysis? If yes, how effective is it?

Thank you.

In this case I am going to apply earthquake time history for site response analysis.

I am uploading the image file of the modelhttp://files.engineering.com/getfile.aspx?folder=8d2cfd5d-225b-4bb4-a9e2-4ac21cc42fd1&file=fig.JPG

IDS: I have some doubt in that, as I am using "transmitting base" condition so I am providing damping at the "bottom nodes" but I am bit confused for providing restraint conditions for the side and top nodes of the plate elements.

Do we need to provide node restraints at every node in the structure?

yes I got it, thank u for ur kind help and suggestions, expect u both to help further also.

sorry I am not a student but I am using this software for the 1st time so I asked for ur assistance

I am using rayleigh damping in my case and have both the frequencies w1 and w2 but i dnt know how to find the corresponding damping ratios.

Thank you jhardy1 and IDS , some of the problems are fixed, now I need to apply earthquake time history and determine the site response for the current structure, can u help me with that.

IDS: Can you please tell me which link should I use to connect nodes at the corners of plate (soil) element (in pink colour) to connect to beam elements.

jhardy1: here I need to connect plate (soil) element with beam element, I need to connect the plate free edges, how can I use grading for cleaning plate free edges on inner side.

Thank you IDS hope it works

Need to clean geometry and plate free edges, I am not able to connect/attach plate free edges. I am attaching a pic of the model, "yellow" outlines are plate free edges. please helphttp://files.engineering.com/getfile.aspx?folder=59e0567e-45af-410a-b4f7-59f297543a06&file=325.JPG

As I am using Rayleigh Damping for my structure do I need to put viscous damping coefficient in properties for beam and plate, and can u tell me how to increase lateral stiffness for columns in Strand7.

glass99: I should use simple plate elements or 2D plane strain elements for designing the footing,I have used beam element for designing the superstructure.

glass99: I got what u r saying, but while using Strand7 we need to define properties of elements which we use to make models. So if are using starnd7, and if u go in plates section in property tab, for isotropic materials u need to provide viscous damping value. Kinldy help me with that.

I need to make a 2D model of a simple building in strand7 with isolated footings, I have to use 2D plane strain plate elements for designing isolated/spread footings, i am using M32 conrete for footing design, how to determine the viscous damping coefficient of plate element in N.s/m/m3 if the...