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Whenever there is a convergence problem i.e. your problem is not getting converged in opensees, the reasons could be - 1. There is some problem in your model. Check for norms in that case while you do the analysis. 2. If your model is correct and big, then push the model. For geotechnical analysis,w...

Good Morning Community, Please tell me what are the various responses for elastic beam column element that can be obtained in pvd recorder in OpenSees? I know that for a pdmy quad element or any quad element, we can obtain displacement, velocity, acceleration , stress and strain in OpenSees using pa...

Good Evening Community, I was performing wall backfill analysis using rigidLink Bar command. When I performed opensees analysis, I got this - RigidRod::RigidRod - mismatch in numDOF between constrained Node 1 and Retained node 1001 Can someone please tell me what does this command mean? Please help ...

Good Morning Community, I am working on Wall - Backfill problems. Please tell me how to connect two different soil domains of pdmy consitutive model vertically, as there is a big problem of rigid body motion here. I mean to say that what kind of connecting element should I be using to connect the di...

Thank You Selimgunay. That was very nice of you. You have helped me a lot.

Good Morning Community,

Can someone please tell me where from I will get the earthquake ground motion data for application in OpenSees wall - backfill problems ?

Please kindly help me. Your kind help will be appreciated a lot.

Thank You.

Thank You . That was very nice of you.

Good Afternoon Community, Please tell me how to find the deformation in a quad element in OpenSees? I mean What command should I use to find the deformation in a quad element, as the only valid queries for a quad element are forces and stresses, as mentioned in the OpenSees page of quad element. Ple...

Good Evening Community, Actually, I am not being able to extract the values from output files obtained in OpenSees. I heard that we can extract it using Matlab or Scilab programs. Can anyone please provide me matlab or scilab scripts of opensees post processing files so that I can plot graphs from t...

Good Evening Community, I had a confusion with my output unit in my stress.out files. So I am asking my doubt here. I am working on Static Earth Pressure of Soil Model in which I have considered a 1m x 1m Soil Box of PDMY Loose Sand having phi = 29 degrees subjected to static anaysis.I have provided...

Thank You Sir.

Thank You Sir.

Respected Sir/Ma,am I am a final year student of Geotechnical Engineering working on Wall-Backfill problems in OpenSees. I have followed the excavation example provided in OpenSees webiste to model my problems in Contact Beams. But whenever, I start my analysis, it shows analysis failed like this - ...

Good Morning Community, Please tell me what are the valid queries to a zero length contact element? Should I take them the same as provided in BeamContact2DElement such as force, friction force, forcescaler and masterforce? Please tell me is there any documentation available for Zero Length Contact ...

Good Morning Community, While using the Zero Length Contact Element in Wall- Backfill Problems, we have to provide Penalty in normal direction and penalty in tangential direction. The element command in OpenSees is as follows - element zeroLengthContact2D $eleTag $sNode $mNode $Kn $Kt $mu -normal $N...