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Hi all, I'm working on a 3d model with temperature variation. The 2D model works perfectly fine but in the 3D cant apply the temperature load. I was wondering it is working on the latest version, or maybe not compiled yet. The error I get is: "SectionForceDeformation::getTemperatureStress<doubl...

Hi everyone, I'm using hystertic material in my model, it is working perfectly using Opensees version 2.4.5 but while using new version (2.4.6) I get this error message: Want: uniaxialMaterial Hysteretic tag? mom1p? rot1p? mom2p? rot2p? <mom3p? rot3p?> mom1n? rot1n? mom2n? rot2n? <mom3n? rot3n?> pin...

Hi everyone, I m trying to model a horizontal cable which is in tension, both ends are fully fixed. 100 meter in length, 114.09 kg/m for mass, tension force is 5.017x10^6 N, Diameter is 0.225 m I used Elastic-beam column, theoretical value of frequency should be 6.5 Hz, based on this equation w=pi/L...

Hi vesna, I want to use Brick8N_u_p_U in my model with one of the nDMaterials, but it seems that this element is not working in the latest version (is it removed?). Do you know which version supports u_p_U elements? Here is my code. Thank you. wipe model basicBuilder -ndm 3 -ndf 7 #soil nodes node 1...

Hi all, I'm trying to use Brick up and upU elemnts, the first one work fine but the last one stop after element command. I followed the opensees manual page 258. the version i used is 2.3.2 i think maybe it does not support u_p_U elements or maybe i made a mistake with my code!!! thank you for your ...

thanks vesna,

Hi all, In my code I have soil nodes with 4DOF, (3 translation and 1 pore pressure) which is connected to Zero Length element node with 3DOF. From the error I found out that in Zero Length elements, nodes must have equal degree of freedom. What is your solution for this? How can I connect these node...

Hi all, is there any example which is done by Brick8N_u_p_U elements? I can find the command in OpenSees manual but why it's not in wiki? is it still working? also the manual says: $alpha 1-Ks/Kt (ratio of void space =1 for soils, =0.6 for concrete...) in Brick8N_u_p_U while in opensees wiki we have...

thank you jinlu, I used the equalDOF to join the connection element to the soil nodes, is it wrong? soil nodes are slaved to pile connection nodes in x & y equalDOF 1001 9 1 2 equalDOF 1002 7 1 2 equalDOF 1003 12 1 2 equalDOF 1004 14 1 2 equalDOF 3001 8 1 2 What is your suggestion to join the pi...

Dear Vesna, thank you for your helpful response, I wrote the code by FluidSolidPorousMaterial with 3D bbarBrick element (each soil nodes with 3DOF) , it works good. But when I used solid-fluid fully coupled material with BrickUP elements (soil nodes with 4DOF) there is a problem and it does not conv...

Thank you Vesna, I will do the analysis in loop.
Is there any reference for knowing the analysis procedure and the commands better.

Hi All, I’m trying to model a 2D pile and compare with ALP. The first step is soil gravity analysis which is done. The second step is pile installation by using beam-column and connecting the pile nodes (3 DOF) with soil nodes (2 DOF). It can be done by connection beam- column element,(also equalDOF...

dear sir, i want to model a concrete foundation on soil, i apply the soil by PressureIndependent material with tag 1 and it works good (i use GID to build 861 nodes and 800 quad elements). i add the concrete foundation like this: model BasicBuilder -ndm 2 -ndf 2 #nodes for foundation node 862 -1 20 ...