The OpenSees Community

can anyone help me ?

dear fmk I have found a serious problem about “eleLoad -ele $i -type -stdBrickW” it seems that I cann't apply ”integrator LoadControl “ command on it it means that I want to apply selfweight gravity on the model in 1000 steps , while it also solve it in one step , why ? it does'nt matter in elastic ...

it seems that I cann't download OpenSeesParallel2.2.0.zip .
dear all ,can you sent me one ?
my email is
liushuhao2009@hotmail.com
thank you !!

yes I have found the errror eletype b1 b2 b3 Brick8N 0 0 $g bbarBrick 0 0 [expr $g*$massden ] stdBrick 0 0 [expr $g*$massden ] am I right ?? here is the result ***************Brick8N *************** Node: 2 Coordinates : 0 1 1 Disps: -0.08829 0.08829 -0.632745 unbalanced Load: 0 0 0 ID : 6 7 8 *****...

dear fmk , you have mentioned that stdbrick element can also apply body force element stdBrick $eleTag $node1 $node2 $node3 $node4 $node5 $node6 $node7 $node8 $matTag <$b1 $b2 $b3> I have a cube model .compared the Brick8N and bbarBrick with stdBrick . here is the script， ###########################...

thanks fmk now I have another qusetion it seems that if I use stdBrick , my PC can calculate more elements .nearly 25,000 elements. but the Brick8N and bbarbrick work baddly . the solution failed more than 30,000 dofs ,why ?is it the numerber problem ? dear fmk , can you run the tcl below ?it is 70,...

thanks fmk， it is the result: i use system ProfileSPD : 12,500 elements 8 nodes Brick8N : failed barBrick : solved successful , but the results seem wrong stdBick : solved successfu in a short time ,and the results seem right . can you explain it ? i really want to use stdBrcik , but how can I apply...

ElasticIsotropic3D material

thanks fmk. the model has 90,000 dofs. it has the same error when I use Brick8N elements . the solution? what's wrong ? system ProfileSPD set Nstep 1 ; # apply gravity in 10 steps set DGravity [expr 1./$Nstep ]; # first load increment; # system BandGeneral integrator LoadControl $DGravity; # determi...

dear fmk I have tried all systems including # system ProfileSPD # system BandGeneral #system BandSPD #system SparseGeneral system UmfPack #system SparseSPD #system SparseGEN #system BandGEN while all failed besides system UmfPack, it solved in a short time no warnings and no errors ,but the result i...

dear all , i want to model a stone arch bridge .the erro is like this: ProfileSPDLinSOE::ProfileSPDLinSOE : ran out of memory for A (size,Profile) (586 98, 2.78287e+008) StaticAnalysis::handle() - LinearSOE::setSize() failedStaticAnalysis::analyze() - domainChanged failed at step 0 of 1 so I want to...

dear all . how can I update this material during the job？
for example , the material is elastic, when the principal stress of one of the gausspoints reachs $a , then I change the elastic material to EPlastic .
how can I do it ? thanks

sos....please

dear all , some questions about Brick8N ,bbarBrick and bbarBrickWithSensitivity 1 : what is the differences between bbarBrick and bbarBrickWithSensitivity ？the results are the same ! 2 the bbar method is used to avoid "volumetric locking", am I right ? 3 compared with ANSYS a ： node load static anal...

I want to remove mp constraints .thanks!!