The OpenSees Community

gerber wrote: > I also try to use Drucker Prager material to simulate concrete behavior. > I made a uniaxial loading test in a conrete cube and I noticed an elastic > totally plastic behavior. > The strength was right ( 20 MPa) but the strain was very small in the end > of the elastic area (0,07%). ...

fmk wrote:
> what is the material command.
I have used "nDMaterial Drucker Prager"....all responses I am getting otherthan strain.

ok..i ll try...

Hi all, Strain recorder not defined for ShellMITC4/ or any other shell element, though stress recorder is defined for those.. Its very strange. It need to be updated. Plz. look into the matter. Can we do the coding for this purpose. Plz. give some idea how to do this... waiting for your valuable sug...

Hi all, For SSPBrick element strain recorder is not working...other recorders are working fine...vesna, silvia plz. look into the matter... ### basic format of the code ### model BasicBuilder -ndm 3 -ndf 3 .... element SSPbrick 1 1 2 3 4 5 6 7 8 $matTag 0.0 0.0 0.0 .... recorder Element -ele 1 -time...

Hi all, Is "nDMaterial Template3Dep" is there in OpenSees2.3.1 or it has been removed? I tried this material to model concrete using the some example file by B. Jeremic. But it's showing following ERROR: ### ERROR #### nDMaterial Template3Dep Invalid material tag -DP.. Warning: Could not c...

vesna wrote: > To achieve the accurate response in nonlinear range of behavior you need to > use several displacement based beam-column elements in place of one > force-based beam-column element. Check this out: > http://opensees.berkeley.edu/wiki/index.php/Discovering_OpenSees_--_Force-based_Elemen...

Hi all, I was trying to model concrete as nDMaterial drucker prager. Doing so, I found that: (1) Beyond yield it doesn't consider the flow of material. That's why the stress-strain curve NEVER goes down, it is continuously increasing. and The stress values get magnified when hardening parameters are...

gerber wrote:
> How can you match Drucker Prager with shell element via plate fiber
> section??? Does it work??
> i thought that I couldn`t use plate fiber section in the last versions
yea. it works. but it can not record the strain..only stresses..

vesna wrote: > It seems that the Plate Fiber wrapper material does not support recorder > arguments of Drucker Prager material. > > You can only record forces and stresses of shell elements. Here is how you > can record stresses: > recorder Element -file $output/stress1.out -time -ele 1 stresses I n...

vesna wrote:
> your stress/strain recorders look ok to me. however, if there is any
> recorder upfront that was not defined properly the later ones won't work.
Plz. run this code in your pc and check if it's working properly. Thank U in advance.

vesna wrote: > your stress/strain recorders look ok to me. however, if there is any > recorder upfront that was not defined properly the later ones won't work. Hi Vesna, I have check my code once again. The node recorders, Element force recorder is working properly giving outputs of nodal displaceme...

Hi all, I was trying to check which element type is suitable for my work: forceBeamColumn or dispbeamcolumn. In my work I need to aggregate a fiber section with a uniaxial material to incorporate the shear behaviour. what I can found that: (1) Modal period values and nodal response values are coming...

vesna wrote: > "Reset" command sets the state of the domain to its original > state ("virgin" state). It is very different from "remove > loadPattern" command. "remove loadPatter" command brings the > forces of the specified load pattern to zero. This does not...

vesna wrote: > When you see something like that that indicates inappropriate definition of > the recorder. > > This one is not define properly: > recorder Node -file $output/disp$mon_node$C.out -time -node $mon_node -dof > $mon_dof disp; > > Try this one: > recorder Node -file [format "$output/...