Analysis due to matrix singularity

[Asad005]

Dear Stko team,
I am receiving an error when I run 3d fem model.
Please help me out with the following error. Waiting for your kind response.
thanks & regards
The file is attached herewith.

WARNING MumpsParallelSolver::solve(void)- Error -10 returned in substitution dmumps()
cause: Matrix is Singular Numerically
WARNING ModifiedNewton::solveCurrentStep() -the LinearSysOfEqn failed in solve()
StaticAnalysis::analyze() - the Algorithm failed at iteration: 0 with domain at load factor 0.1
WARNING MumpsParallelSolver::solve(void)- Error -10 returned in substitution dmumps()
cause: Matrix is Singular Numerically

[STKO Team]

Here is a working copy (I just tested the first vertical analysis):

3D, RealF, Solid.zip

(709.28 KiB) Downloaded 201 times

The problem was in the solid-bar interaction:
The solid should be the master and the bars should be the slaves.

I also increased the penalty parameters of the first analysis to 1.0E16. Do the same in the second analysis (I forgot to do it)

I also increased the peak strain of your concrete model, it was too small. It should be larger than fcp/E.

[Asad005]

Thanks for being so kind.
regards