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thankyou vesna you were right. the problem was solved and now I can run my sccript. but again I have some questions. I use zerolength elements as interface elements of soil and structure and assign springs for these elements. but I'm not sure wich materials is good for a nonlinear springs. could you...

thank you for reply, here is the warnings. Finshed creating all soil nodes... WARNING: updateMaterialStage - MaterialStageParameter::setDomain() - no effect w ith material tag 1 Finished creating all soil materials... Finished creating all soil elements... Finished creating all fixities... Finished ...

hi vesna I wrote a smaller script for my problem and in that case my analyses completed. but again in big script the analyses have errors:( the big script is exactly same as the small one just number of elements is more. what is the problem in your idea? here is the small script. please take a look ...

Hi every one, I'm doing dynamic analyses with Opensees but it takes a lot of time for completing the analyses. I’ve checked the CPU usage of my computer and mentioned that it just uses about 30% of its capacity. My computer CPU is core i5 and I want to run the Opensees with whole capacity of it. Any...

Thank you vesna,

I'll check it

I tie the left side of soil mesh to right side of it with equalDOF command. Is it right?

thank you vesna

I've tried 2 nodes with same material but I got error with Dof. I'll try it again and post it's problems.

Thank you again

and here is the warnings that I got from analyses of above code. ProfileSPDLinDirectSolver::solve() - aii < 0 (i, aii): (1, 0) WARNING Linear::solveCurrentStep() -the LinearSOE failed in solve() StaticAnalysis::analyze() - the Algorithm failed at iteration: 0 with domain at load factor 0.1 OpenSees ...

Thank you vesna. OK you are right. let me explain my problem and I hope you will reply. I really need it. As I explained in my 1st post I used 3 nodes with same coordination for defining a wall (element elasticBeamColumn) in a soil mesh. and I used a zero length element with an spring and dashpot in...

any idea about this problem?

I'm trying to model the project of "PEER 2008/104" for verifying my own project. I wrote the script of that but I couldn't setup the analysis commands. Here is the script. I have 3 analyze but none of them work properly :( Anybody can help me? wipe #--------------------------------------------------...

No body to help me? How should I set up the analysis commands in the upper script?

I'm trying to model the project of "PEER 2008/104" for verifying my own project. I wrote the script of that but I couldn't setup the analysis format. Here is the script. Anybody can help me? wipe #----------------------------------------------------------------------------------------- # 1. CREATE S...

Hi Vesna, I think I solved this problem. I defined 3 nodes with same coordinate and joined 2 of nodes with a zero length element and joined one side of zerolength element with the third node. After this changes it hasn't that warning but I've got other errors with analyze commands. Is defining 3 nod...

Hi, I’m trying to model a retaining wall and I want to use zero length elements with a parallel material (an elastic no tension material parallel with a viscous material) as interface elements between wall and soil elements. I use quadrilateral elements for soil and elastic beam column elements for ...