Hello, I am student of the Civil Engineering department of Aristotle University of Theassaloniki. I tried to run the analysis of the file THEMA_QUAKE.txt and i got the following reports. Could you please give me some advice? Thank you in advance! Michail Voutsis OpenSees > source THEMA_QUAKE.txt WARNING BandGenLinLapackSolver::solve() -factorization failed, matrix singular U(i,i) = 0, i= 1 WARNING NewtonRaphson::solveCurrentStep() -the LinearSysOfEqn failed in solve() DirectIntegrationAnalysis::analyze() - the Algorithm failed at time 0.01 OpenSees > analyze failed, returned: -3 error flag WARNING BandGenLinLapackSolver::solve() -factorization failed, matrix singular U(i,i) = 0, i= 1 WARNING BandGenLinLapackSolver::solve() -factorization failed, matrix singular U(i,i) = 0, i= 1 WARNING BandGenLinLapackSolver::solve() -factorization failed, matrix singular U(i,i) = 0, i= 1 WARNING BandGenLinLapackSolver::solve() -factorization failed, matrix singular U(i,i) = 0, i= 1 WARNING BandGenLinLapackSolver::solve() -factorization failed, matrix singular U(i,i) = 0, i= 1 WARNING BandGenLinLapackSolver::solve() -factorization failed, matrix singular U(i,i) = 0, i= 1 WARNING BandGenLinLapackSolver::solve() -factorization failed, matrix singular U(i,i) = 0, i= 1 WARNING BandGenLinLapackSolver::solve() -factorization failed, matrix singular U(i,i) = 0, i= 1 WARNING BandGenLinLapackSolver::solve() -factorization failed, matrix singular U(i,i) = 0, i= 1 WARNING BandGenLinLapackSolver::solve() -factorization failed, matrix singular U(i,i) = 0, i= 1 WARNING BandGenLinLapackSolver::solve() -factorization failed, matrix singular U(i,i) = 0, i= 1 WARNING BandGenLinLapackSolver::solve() -factorization failed, matrix singular U(i,i) = 0, i= 1 WARNING BandGenLinLapackSolver::solve() -factorization failed, matrix singular U(i,i) = 0, i= 1 0.00015037593984962403 0.00015037593984962405 0.00015037593984962405 0.00015037593984962408 0.00015037593984962408 0.00015037593984962411
Hello Farzad Tat Shahdost,
My task is to run the structural analysis of a 6 floor building, that is made with reinforced concreet.
The file: < ΤΗΕΜΑ_ELASTIC.txt > is reffering to the elastic model of the structure.
The file: < ΤΗΕΜΑ_STATIC_LOADING.txt > is reffering to the static loading of the structure.
I attach you these 2 txt files, the overview of every floor (diaphragm) and also 2 screenshots with the Warnings of the Analysis in OpenSees version 3.2.2
I cannot find where the mistake is.
I would appreciate your help.
Michail Voutsis
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