Search found 30 matches

by armkam
Tue Dec 11, 2018 3:02 pm
Forum: OpenSees.exe Users
Topic: PM4Sand
Replies: 0
Views: 1501

PM4Sand

Hi all,

I want to use nDMaterial PM4Sand.
Although the material is in the source code and there are two examples on the website, I'm getting a warning saying "could not create nDMaterial: PM4Sand".
Any ideas?
by armkam
Sun Sep 16, 2018 9:55 pm
Forum: OpenSees.exe Users
Topic: Interlocking Effect
Replies: 2
Views: 2726

Re: Interlocking Effect

I just want to control the displacement so I wouldn't get huge displacements resulting in convergence problems.
by armkam
Tue Sep 11, 2018 4:51 pm
Forum: OpenSees.exe Users
Topic: Interlocking Effect
Replies: 2
Views: 2726

Interlocking Effect

Hi, Suppose I have a zerolength element with Elastic Perfectly Plastic (EPP) or Steel01 (with a minuscule hardening ratio). If I load my material, after I'd reach the yielding force, I'd get huge displacements due to plasticity. Is there any possible way that I can limit these displacements? Or alte...
by armkam
Sun Aug 19, 2018 8:17 pm
Forum: OpenSees.exe Users
Topic: ZeroLength Elements
Replies: 3
Views: 3306

Re: ZeroLength Elements

An update: I tested a couple of scripts and the conclusions are as follow: The zerolengthContact act as a zeroLength element with an ENT material in the direction normal to the frictional plane. If both the elements are used, they act parallel. Under the same load, the stiffness doubles and the norm...
by armkam
Sun Aug 19, 2018 3:41 pm
Forum: OpenSees.exe Users
Topic: Suitable Element Recorder Tag
Replies: 0
Views: 1509

Suitable Element Recorder Tag

Hi, What are the correct element recorder tags for zerolengthContact3D material? I have used 'force', 'forces', 'globalForce' and these just record bunch of zeros (while there is a force in the element, I've checked this by using a simple zeroLength element). I used 'deformation', 'stiff' and 'stiff...
by armkam
Sun Aug 19, 2018 3:04 pm
Forum: OpenSees.exe Users
Topic: ZeroLength Elements
Replies: 3
Views: 3306

Re: ZeroLength Elements

How about the recorders of the element (zeroLengthContact3D )?
I cannot record the forces!
by armkam
Wed Aug 15, 2018 7:20 pm
Forum: OpenSees.exe Users
Topic: ZeroLength Elements
Replies: 3
Views: 3306

ZeroLength Elements

Hi All, I want to define the interface between soil and shallow foundation. Suppose the followings are my soil and foundation nodes. Both nodes have 3 DOFs. Foundation: node 1 0.0 0.0 10.0 Soil: node 2 0.0 0.0 10.0 I want to have frictional behaviour in lateral DOFs (X- and Y-direction) and elastic ...
by armkam
Sun Feb 25, 2018 1:21 pm
Forum: Parallel Processing
Topic: Error on Running Jobs on an HPC
Replies: 3
Views: 9689

Re: Error on Running Jobs on an HPC

You're right Frank. There was a problem with their compilation and they've fixed it now.
by armkam
Tue Feb 13, 2018 5:04 pm
Forum: Parallel Processing
Topic: Solution to Mumps Error
Replies: 2
Views: 6244

Solution to Mumps Error

Hi, I have a large model and I'm using OpenSees on an HPC platform. My analysis script consists of two phases: static and transient analyses. Since my model is large I cannot use any system solver other than Mumps or the analysis would crash. If I use Mumps in both phases, the transient analysis doe...
by armkam
Mon Nov 27, 2017 2:27 pm
Forum: Parallel Processing
Topic: Error on Running Jobs on an HPC
Replies: 3
Views: 9689

Re: Error on Running Jobs on an HPC

I would appreciate if somebody can answer to this, is it do to Mumps?
by armkam
Tue Nov 21, 2017 7:34 pm
Forum: Parallel Processing
Topic: Error on Running Jobs on an HPC
Replies: 3
Views: 9689

Error on Running Jobs on an HPC

Hi, I want to run my script on an HPC (NeSI Pan cluster). When I run my script on Pan cluster with more than 1 cpu, I confront an error saying: "Input Error: Incorrect ncuts. DomainPartitioner::partition - too few elements for model to be partitioned WARNING before analysis; partition failed - ...
by armkam
Wed Mar 01, 2017 6:16 pm
Forum: OpenSees.exe Users
Topic: 6dof with pore pressure
Replies: 1
Views: 2178

6dof with pore pressure

Hi,

I want to model a 3D retaining wall while having pore pressure.
Since there is retaining wall in addition to soil, all 6dofs are needed.
Considering the fact that modelling pore pressure requires an additional dof, can this model be built?
Any recommendations and guides are truly appreciated.
by armkam
Mon Feb 13, 2017 5:46 pm
Forum: OpenSees.exe Users
Topic: Is Gauss Points location depend on numbering order of ele?
Replies: 2
Views: 3112

Is Gauss Points location depend on numbering order of ele?

Hi,

I want to know if the Gauss point location is dependent and same is numbering order of quad element nodes or Gauss point 1 will always be on bottom left corner, 2 on bottom right, 3 on top right and 4 on top left?
by armkam
Thu Jan 19, 2017 12:17 pm
Forum: OpenSees.exe Users
Topic: Not Getting Expected Unloading Results PDMY Material
Replies: 1
Views: 2522

Re: Not Getting Expected Unloading Results PDMY Material

I don't know whom I should ask this question and I have emailed code developers but got no answers so far.
by armkam
Mon Jan 16, 2017 2:18 pm
Forum: OpenSees.exe Users
Topic: Not Getting Expected Unloading Results PDMY Material
Replies: 1
Views: 2522

Not Getting Expected Unloading Results PDMY Material

Hi, I have modeled a simple medium sand soil column with PDMY material using four 1x1m quad elements which is fixed at based and constrained at 1st Dof (horizontally) at both sides. A series of loading/unloading vertical load is applied on upper surface nodes. This is like compression test (Oedomete...