zerolength element with uniaxialMaterial ENT

[nbazaraa]

Dears Frank/Silvia

Can you post me some basic examples on how to model zerolength element with uniaxialMaterial ENT including analysis specifications?

I have tried to model gap opening but i found that this zerolength element with ENT material resists tension and reduce the gap opening where it must not resist any tensile load or stress or tensile translations.

i am in a bad need to your help to carry on with my research work.
Thanks

[emjac]

Hi. I am also using ENT for some uplift modelling, but I am not getting any tension participation from the element. Here is how I define the material:

set E 200000;
set matCompSupport 1;
uniaxialMaterial ENT $matCompSupport $E;
element zeroLength 1 1 2 -mat $matCompSupport -dir 1 -orient 0 1 0 -1 0 0;

How do you know it resists the gap opening? Could you post some of your model?

[nbazaraa]

Simply you can know that by displaying the element forces at the end of the analysis, the axial tensile internal force must be zero in all loading cases but can be compression.

[emjac]

That is odd. I get zero axial in tension.