Search found 43 matches

by johnnyontheweb
Tue Nov 24, 2020 7:38 am
Forum: OpenSees.exe Users
Topic: ShellMITC4 stress calculation
Replies: 4
Views: 954

Re: ShellMITC4 stress calculation

I think I found the point - theElement->strain was always zero, due to the fact that

Code: Select all

algorithm Linear
does not set any trial strain on the element.
I used this because at this stage my model is linear, anyway I turned into

Code: Select all

algorithm Newton
and now I have forces.
by johnnyontheweb
Sun Nov 22, 2020 7:51 am
Forum: OpenSees.exe Users
Topic: ShellMITC4 stress calculation
Replies: 4
Views: 954

Re: ShellMITC4 stress calculation

Hello, I read here that one can use: recorder Element -file ele1gp1forces.out -time -ele 1 material 1 forces to get results in this order: [Time Nxx, Nyy, Nxy, Mxx, Myy, Mxy, Vxz, Vyz] If I use ShellMITC4 and PlateFiber, like this: nDMaterial ElasticIsotropic 3 210000 0.3 nDMaterial PlateFiber 2 3 s...
by johnnyontheweb
Tue Apr 17, 2018 5:19 am
Forum: OpenSees.exe Users
Topic: Response Spectrum Analysis dll Module Release
Replies: 2
Views: 1512

Re: Response Spectrum Analysis dll Module Release

cromance wrote: > Is there anyone who use this dll for response spectrum analysis? > I can't perfrom eigen value analysis with pFactor command using Opensees > 2.5.0. Please tell about the error encountered. The DLL was updated a few months ago. If you can, uploading your model will be of great help.
by johnnyontheweb
Mon Nov 07, 2016 7:29 am
Forum: OpenSees.exe Users
Topic: Linear stability analysis?
Replies: 1
Views: 868

Linear stability analysis?

Hi everyone,
can OpenSees perform linear stability (buckling) analysis?
I cannot find any reference on that, and I've never seen any geometric stiffness matrix in the elements' code.

Thanks
by johnnyontheweb
Sun Jun 14, 2015 1:49 am
Forum: OpenSees.exe Users
Topic: A problem with adding a new material
Replies: 2
Views: 958

Re: A problem with adding a new material

I'm trying me too, but I get an overflow error when trying to read "theParam" array. It seems that the c_f_pointer it's not working.
Moreover, you must correct the "if results != 1" in TCLelement_api in "if results != 0".
Still looking to solve...
by johnnyontheweb
Fri Jun 05, 2015 7:18 am
Forum: OpenSees.exe Users
Topic: New software for pre- and post-processing
Replies: 2
Views: 1326

New software for pre- and post-processing

Dear all, it is available from now a brand-new software that supports, amongst the other features, pre- and post- processing for OpenSees. Some applications will be presented in the upcoming OpenSees Days Italy in Salerno. It can be downloaded from http://www.nextfem.eu and it is free. I kindly ask ...
by johnnyontheweb
Tue Apr 07, 2015 1:11 pm
Forum: Framework
Topic: windows DLL for new system
Replies: 1
Views: 964

windows DLL for new system

Deaf fmk,
is there an example for ms visual studio on how to compile a new system as external DLL?
if not, can you tell me please which template I can use (maybe the one for the new element or for newCommand)?

thanks in advance,
Giovanni
by johnnyontheweb
Sun Feb 15, 2015 11:08 am
Forum: Framework
Topic: GetNodeIncrDeltaDisp or GetNodeIncrDisp?
Replies: 2
Views: 1024

Re: GetNodeIncrDeltaDisp or GetNodeIncrDisp?

got it, it's clear now.
Thanks
by johnnyontheweb
Wed Feb 11, 2015 7:29 am
Forum: Framework
Topic: GetNodeIncrDeltaDisp or GetNodeIncrDisp?
Replies: 2
Views: 1024

GetNodeIncrDeltaDisp or GetNodeIncrDisp?

Dear fmk,
what is exactly the difference between OPS_GetNodeIncrDeltaDisp and OPS_GetNodeIncrDisp in the element APIs?

thanks,
Giovanni
by johnnyontheweb
Sun Feb 01, 2015 1:37 am
Forum: Parallel Processing
Topic: How to compile OpenSeesMP in Windows?
Replies: 11
Views: 8204

Re: How to compile OpenSeesMP in Windows?

The point was the name of the libs. It is necessary to publish some instructions on the wiki.
by johnnyontheweb
Mon Jan 26, 2015 2:17 am
Forum: Parallel Processing
Topic: How to compile OpenSeesMP in Windows?
Replies: 11
Views: 8204

Re: How to compile OpenSeesMP in Windows?

dear fmk, thanks for your reply. However, it seems harder that described. As I said, I got mumps (and blacs) and scalapack for windows, but the referenced LIB files in OpenSeesSP and MP projects are not so clear. I found: blacsCinit_MPI-Win32 blacs_MPI-Win32 scalapackd mumpsFortran mumps Can you pro...
by johnnyontheweb
Tue Jan 13, 2015 1:35 pm
Forum: OpenSees.exe Users
Topic: OpenSees and VBA
Replies: 4
Views: 1618

Re: OpenSees and VBA

There is not what I intended. An API allows you to call the function inside OS.
by johnnyontheweb
Sat Jan 10, 2015 12:26 pm
Forum: OpenSees.exe Users
Topic: OpenSees and VBA
Replies: 4
Views: 1618

Re: OpenSees and VBA

Sap has APIs for Vba.
Can the opensees apis be called from vba or .net?
by johnnyontheweb
Tue Jan 06, 2015 1:57 am
Forum: OpenSees.exe Users
Topic: eigen on large models
Replies: 16
Views: 6362

Re: eigen on large models

Dear fmk, thanks for your reply. I could agree with that, but I cannot share the reasons. I lost more than one month to catch this error and as I said, the comparison with other solvers (such as Abaqus and SAP) didn't help too much because they automatically correct these errors (that, let me say, a...