Dear sir/madam, I'm studying on an earthquake analysis with Plaxis 2D (with an input motion whose duration is almost 12s). While acceleration values goes around 0m/s^2 after 8s (drift correction is applied), there is a sudden and significant increase…

I am applying input motion data at the base of the model with PGA as 0.349g, time = 34.96 sec. In PLAXIS I am using 40 sec and 4000 steps with subsets =1 as time step is of 0.01 sec. In the results it was observed (the node on the prescribed displacement…

Good morning. How could I extract the time-displacement curves in plaxis, using python, for the case of dynamic analysis. Has anyone tried this before? I have not found information in the script manual about data extraction in the case of dynamic analysis…

Since PM4sand and PM4 silt models are advanced constitutive models for dynamic analysis. I have read in one journal that for static analysis, they used Mohr-coulomb. Can we change the model after static analysis in one project? IS it possible?

Dear sir/madam, Is it normal to have plastic points in the model at the end of a dynamic analysis like in the figure i shared below? I'm facing with this situation in some of the earthquake records, but not all of them. When i tried another earthquake…

Dear sir/madam, I have two questions about the usage of rayleigh damping, 1) How should we assign the rayleigh damping coefficients in layered soils? I mean that sohuld we determine the f1 and f2 values for each layer or should we determine uniform…

Dear sir/madam, I have a question about the rock outcrop motion in dynamic analysis. When the input motion is a rock outcrop motion, we should scale this motion by 0.5 for the compliant base boundary. But, i'm wondering about if we can make deconvolution…

Dear sir/madam, I have a question about maximum step number and sub step number in dynamic analysis. For example, when we give an input motion (which has a duration of 33s and time interval of 0.01s) into to model, a) Setting the maximum step number…

Why liquefied points are observed in soil while using advanced constitutive models PM4sand and PM4silts before seismic loading? The liquefied points were observed in static phase only

Hello, I am applying uniform lateral load in a soil and the soil properties are shown in figure. I am applying lateral load on the soil of 1-unit uniform displacement. I am performing dynamic analysis of 20s, but I am receiving decayed amplitude in…

I am currently working on a liquefaction analysis using the PM4Silt and PM4Sand models for a layered soil model in PLAXIS 2D. However, I have encountered an issue where the liquefied points are observed in the static stage only before the dynamic analysis…

In the model, when the peak model is drawn on the node 2650 acceleration-time graph, it also shows abnormal behavior on the acceleration time graph. I couldn't find the cause of the problem.

Hi, I'm working on the seismic behavior of a T-shaped retaining wall. However, the dynamic calculation of the Plaxis 2D FEM model shows non-physical negative values in the total interface stress profile (wall-backfill material) in an active earth pressure…

Hi. I have a modelling problem for moving load analysis of road embankment on soft clay. The model is 57.5m long and 20m wide. I need to simulate a set of moving loads (all four moving loads) with a constant speed of 20m/s that will pass by a nearby…

I would like to know if altering the Mweight factor before a dynamic calculation will affect my results (Mass calculation and gravity constant). It is my understanding that the Mweight only affects the unit weight. Am I correct? Thank you.

Hello guys Could you help me, please I have 02 questions: 1) How do you get the full signal from the load applied over 1 second, knowing that it depends on the frequency each time you change it? 2) Does the load signal given by Plaxis allow me to…

Am trying to model the effect of thermal loading on the backfill behind integral abutment by using Plaxis 2D. I modelled the concrete bridge deck as Linear Plate element and provide a prescribed displacement near the top of the abutment. The applied displacement…

Hi, I am a civil engineering student and am trying to model a reclamation project with Plaxis-2D. I was trying to study the lateral deformation caused by wave loading on the artificial island, but since the boundaries are fixed, no lateral deformation…

Hi, im doing a dynamic analysis of an earth dam and I am a little confused of the boundary conditions I need to use because as you can see in the figure my model is moving like a rigid solid. I create a Line Displacement in the bottom with my Displacement…

Greetings everyone. I am trying to perform site response analysis for a 5 storey building on Plaxis 2D with a model consists of 20m thickness loose sand and below 10m thickness stiff clay layer. I have modelled the structure as a foundation and side/shear…

Hi, I am trying to evaluate the slope reinforced by a row of piles under dynamic conditions (earthquake data). I want to obtain maximum lateral displacement v/s dynamic time under lateral loading condition. So what should be the boundary condition of…

Hi, Plaxis3D wiki provides a great tutorial ( How to model moving loads to simulate train-induced vibrations - GeoStudio | PLAXIS Wiki - GeoStudio | PLAXIS - Bentley Communities ) on how to model moving loads to simulate train movement. However, I have…

Hi there, I am working on a comparison of a 1D wave propagation and Deepsoil, but I am seeing some large discrepancies. I am modeling a 15m thick soil column of clay (HS Small). The "bedrock" layer is a 1m thick linear elastic material wit vs = 550…

Hi there, I am in the process of conducting a dynamic analysis to asses the stresses and strains in a secant wall during an earthquake event. The parkade is about 28m deep. The water table is close to the surface and the excavation wall consists of…

I have been analyzing seismic response of the slope by using HSsmall model in plaxsis 2d. Questions: 1. How can use boundary condition for slope (fig 1.1)? I applied compliant base at the bottom with ux,ref=0.5 and free field for Xmin and X max…