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Thank you. Dr.Silvia for your answer. I try to change the ENT material for truss element with Elastic material, but it still have the same problem. error message WARNING BandGenLinLaplackSolver:solve<> -LAPACK routine returned 9 WARNING NewtonLineSearch::solveCurrentStep<> -the LinearSysOfEqn failed...

I analyze a 2D frame, one bay one story, the original frame have 4 node (node 1 2 3 and 4) and 3 elements. When I introduce node 5, element 4 (node 3 and node 5) and element 5 (node 5 and node 2), there are some error messages, but when I delete node 5 and directly connect element 4 (node 3 and node...

I run the example file " ZeroLength1.tcl" (node 1 and 2 is the same location 0.0 0.0), and I try to change the location of node 1 to -0.1 0.0 (previous value is 0.0 0.0) and run the program. The results of the new script is the same as the results from ZeroLength.tcl, but there is some war...

Dear Dr.Silvia I try to change as you recommendation, and it still have an error. But if I try to delete a zero length element with hysteretic material and corresponding node(5,6), there is no error . I think I have some problem with rigid link command or hyteretic material or zerolength element, bu...

I try to change my model, but it still have the same problem. Can anybody help me please? This is my new tcl script. # -------------------------------------------------------------------------------------------------- # Frame IW1-- Build Model # nonlinearBeamColumn element, inelastic fiber section #...

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uniaxialMaterial Hysteretic $matTag $s1p $e1p $s2p $e2p <$s3p $e3p> $s1n $e1n $s2n $e2n <$s3n $e3n> $pinchX $pinchY $damage1 $damage2 <$beta> For this type of material, how I can define these value:$pinchX $pinchY $damage1 $damage2 <$beta> What are the practical range of this value ? where can I get...

For Zero element length, is it necessary that the i and j node should be the same loacation ?