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…

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.

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…

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 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…

Hi there, I am in the process of conducting a dynamic analysis on a deep excavation (>28m). The water table is close to the surface and the excavation wall consists of secant wall and anchors. Therefore, I am running a coupled flow analysis during…

I just doing a simulation for liquefaction on gentle relief slope with the dynamic load is 50s which consist 0.01s each data. I use PM4Sand for the constitutive model applied on the sand layer also HS Small for the clay. Currently I set the Max steps…

How can I set up a cyclic impact of a hammer while pile loading (preferably in 2D)? I would like to see the displacement in the surrounding soil while the pile was hit 100 times (for example). Thank you

Good morning, Is it possible to set manually the value of the parameter h0 for the PM4Sand model? The value is computed internally with equation 2.31 of the PM4Sand model manual. Thank you in advance, Andrea Balia

Hi all, What parameters are required to be altered to change the dynamic settlement in a soft soil model?

Hello everybody I perform seismic analysis in Plaxis 2D model by using a harmonic signal (0.11 g, 1 Hz). I set horizontally fixed lateral boundaries and used absorbent boundaries in dynamic analysis (free field for boundaryX and compliant for boundaryY…

Good morning, I am trying to run a dynamic analysis and the error code 33 appears stopping the analysis at the beginning. In the model there are not embdedded beams. Probably the issue is in the creation of free-field boundaries, because if I set…

Hi, I need to perform earthquake analysis of a slope but in terms of dynamic forces, all I have is response spectra of matched time histories (see example below). I am wondering if I can use these spectra as an input in PLAXIS 2D for my analysis or…

For the same model Mohr-Coulomb, HS and Hs small model is giving positive pore water pressure but the UBC3D-PLM model is giving negative results of excess pore water pressure. Is there any problem in software or I am doing something wrong.

Good evening, I have a relatively simple question. why Mohr Coulomb's constitutive model, if subjected to cyclic loads of constant amplitude repeated over time, in dynamic analyzes, produces an increase in plastic deformations? Thank you in advance

Hello Everyone! Does anybody know if its possible to view the plate forces (Bending Moment/Shear/Axial) for a chosen timestep in a dynamic analysis? At the moment I am only able to view these forces at the final step (Step 222, Time = 0.175s) of the…

Good Day Everyone I'm trying to plot a Load- Displacement curve for a Dynamic Analysis on Plaxis 2D but im not sure how to do so since the MStage Method doesnt work for Dynamic Analysis I have the Load-Time curve which I have input as a Load Multiplier…

I want to apply (input) a dynamic load of sinusoidal wave which is having a frequency of 20hz and amplitude of 5m/s2 at the base of model how can I apply that? Secondly, how can I use UBC3DPLM model for liquefaction and how can I get pre and post liquefaction…

Im doing a dynamic analysis of machine foundation with various freqencies. Im using geocell as reinforcement in 2D (by using ECA). but after reinforcement there was no shift in resonance. Definite reduction in aplitudes were observed but at same frequency…

Hi, I am modelling a largescale oedometer(like) setup with dynamic loading. I have tried different soil models (soft soil,MCC, Hardening,HS small etc) to simulate the dynamic behaviour but unable to produce the excess pore pressure accumulation. Excess…