Search found 50 matches

by Ashok
Thu Feb 11, 2021 8:57 pm
Forum: OpenSees.exe Users
Topic: Step time dependent material
Replies: 5
Views: 4038

Step time dependent material

Hi, I am writing a new material - it's response depends on the step time. How can we give material class - an access to step time and time increment ? Currently the only way I can think of is - using "strainRate" in "setTrailStrain()" method i.e. (deltastrain)/strainRate = time increment . Any alter...
by Ashok
Wed Jan 13, 2021 1:49 am
Forum: OpenSees.exe Users
Topic: 3D truss model
Replies: 1
Views: 1174

Re: 3D truss model

Ok ! I got the point
the support condition should be

fix 1 1 1 1 1 1 1
fix 2 0 0 1 1 1 1
fix 3 0 0 1 1 1 1
fix 4 1 1 1 1 1 1
All the rotational dof's should be restrained + out of plane restraints also should be added.
by Ashok
Tue Jan 12, 2021 10:32 pm
Forum: OpenSees.exe Users
Topic: 3D truss model
Replies: 1
Views: 1174

3D truss model

# Remove existing model wipe model BasicBuilder -ndm 3 -ndf 6 node 1 0 0 0 node 2 0 2400 0 node 3 1200 2400 0 node 4 1200 0 0 fix 1 1 1 1 0 0 0 fix 4 1 1 1 0 0 0 fix 2 0 0 1 0 0 0 fix 3 0 0 1 0 0 0 uniaxialMaterial Elastic 1 3000 # Create truss elements - command: element truss trussID node1 node2 ...
by Ashok
Thu Jan 07, 2021 3:39 am
Forum: OpenSees.exe Users
Topic: get node and element tags
Replies: 0
Views: 3955

get node and element tags

Hi, In opensees wiki - I am unable to find getEleTags and getNodeTags commands. The pages have been deleted. Do you know the reason. I see it in OpenSeesPy. But unable to find in OpenSees. Even in developer wiki - many things are missing - for example - adding an nDmaterial, adding used defined solv...
by Ashok
Sat Nov 28, 2020 5:47 pm
Forum: OpenSees.exe Users
Topic: Simple fixed beam question
Replies: 3
Views: 2599

Re: Simple fixed beam question

Hi,
I am not sure about STKO, but see if this helps.
https://portwooddigital.com/2020/08/27/ ... -marplots/
This is a article written by Prof. Scott.
by Ashok
Fri Nov 27, 2020 10:47 pm
Forum: OpenSees.exe Users
Topic: OpenSees original framework
Replies: 2
Views: 901

Re: OpenSees original framework

Dear sir, Sorry for troubling you but, it gives me an error - "cannot open input file 'ifconsol.lib' I have included intel parallel studio version of 'ifconsol.lib' in the additional library directories and OpenSees Tcl version compiles well with that and even OpenSeesPy compiles well with that. But...
by Ashok
Thu Nov 26, 2020 8:23 am
Forum: OpenSees.exe Users
Topic: OpenSees original framework
Replies: 2
Views: 901

OpenSees original framework

Hi, Where can I find the original framework of OpenSees - without Tcl or Python interpreters, where user can supply his own main function. Does the current github version support that thing i.e. can I insert my own main function with all the current elements and materials in place? Please tell me th...
by Ashok
Sat Nov 21, 2020 11:08 pm
Forum: OpenSeesPy
Topic: compiling OpenSeespy on windows
Replies: 5
Views: 3641

Re: compiling OpenSeespy on windows

Thank you sir. I followed the same process you have shown in your video. It's compiling ! One reason the compels me to use OpenSees is the support that we get from the developers directly. They give time and help for others to benefit from their software. This is the unique feature of this project. ...
by Ashok
Sat Nov 21, 2020 9:00 am
Forum: OpenSeesPy
Topic: compiling OpenSeespy on windows
Replies: 5
Views: 3641

Re: compiling OpenSeespy on windows

Thank you sir. I tried your approach. But because I am on the other part of the globe - mine is 11/21/2020 version of OpenSees. (Shouldn't be a problem) But I get this error for all elements: "getRayleighDampingForces" is not a member of "ForceBeamColumn2" .... .... .. like this I am getting errors ...
by Ashok
Thu Nov 19, 2020 5:53 pm
Forum: OpenSeesPy
Topic: compiling OpenSeespy on windows
Replies: 5
Views: 3641

compiling OpenSeespy on windows

Hi,
Can somebody tell me the process of compiling OpenSeespy from OpenSees source code on windows.


Thank you,
Ashok.
by Ashok
Thu Nov 05, 2020 5:19 am
Forum: OpenSees.exe Users
Topic: How to apply the cyclic lateral load from a file
Replies: 2
Views: 841

Re: How to apply the cyclic lateral load from a file

Dear Pham, Refer to this " https://opensees.berkeley.edu/wiki/index.php/Pinching4MaterialExample " page. Download the three '.tcl' files. One of them, procRCycDAns.tcl has the code by which you can adjust the parameters such that cyclic loading pattern matches your experimental input cyclic loading ...
by Ashok
Tue Oct 27, 2020 12:28 am
Forum: OpenSeesPy
Topic: OpenSees Support Group
Replies: 1
Views: 2906

Re: OpenSees Support Group

Good initiative ! Thank you.
by Ashok
Tue Oct 27, 2020 12:11 am
Forum: OpenSeesPy
Topic: compiling OpenSeespy from OpenSees source
Replies: 1
Views: 1622

compiling OpenSeespy from OpenSees source

Hi,
I am able to compile OpenSees from source on my windows machine.
How to compile OpenSeespy?
Should I download something else ? Can you kindly direct me please...

Thank you,
Ashok
by Ashok
Thu Oct 22, 2020 12:20 am
Forum: OpenSees.exe Users
Topic: Frame buckling analysis
Replies: 2
Views: 904

Frame buckling analysis

Hi, I am trying to do stability analysis of steel structures... Can I do a critical load analysis of a frame with vertical load? It's a single bay, single storey steel frame. I am trying with eigen - but it is for natural frequency analysis I think - it is asking for mass. Is it possible to get the ...
by Ashok
Sat Sep 05, 2020 2:11 am
Forum: OpenSeesPy
Topic: A simple column buckling analysis
Replies: 11
Views: 3643

Re: A simple column buckling analysis

I am getting the answer with the following code. But the value seems to be wrong, from calculation and from MASTAN2 Pcr = (pi)^2*E*I/L^2 The value is supposed to be 18545 N. But OpenSees is giving 5980 N. The working code: import openseespy.opensees as ops import openseespy.postprocessing.Get_Render...