Search found 14 matches

by ankitprakashntpc
Mon Feb 17, 2014 11:25 pm
Forum: OpenSees.exe Users
Topic: Damage Index in fatigueMaterial
Replies: 8
Views: 5770

Re: Damage Index in fatigueMaterial

Thank you very much fmk for your help. Sorry for late acknowledgement. I tried damage recorder with various combination to record DI for different fibers of many non-linear beam column element in my model. One thing I want to know is whether any code or command is available to record maximum damage ...
by ankitprakashntpc
Tue Jan 21, 2014 11:28 pm
Forum: OpenSees.exe Users
Topic: Damage Index in fatigueMaterial
Replies: 8
Views: 5770

Damage Index in fatigueMaterial

Hi all, I am working on SCBF with braces modeled with steel02 material wrapped with fatigueMaterial. I would like to know that is there any way to capture final damage indices (DI) of the brace elements during analysis run? This variable is used in the source code of fatigueMaterial. Also is there a...
by ankitprakashntpc
Mon Jan 20, 2014 7:09 am
Forum: OpenSees.exe Users
Topic: Cycle counting in fatigueMaterial
Replies: 4
Views: 3823

Damage Index/ Cycle counting in fatigueMaterial

Hi all, Let me post my query in another way. Is there any way by which I can record final damage indices (DI) of elements wrapped with fatigueMaterial? This variable I suppose is used in the source code of fatigueMaterial. Always appreciate your informative replies. Thanks and regards, Ankit Prakash...
by ankitprakashntpc
Mon Jan 20, 2014 3:19 am
Forum: OpenSees.exe Users
Topic: Plastic Hinge Monitoring
Replies: 4
Views: 5901

Re: Plastic Hinge Monitoring

Thank you very much Ameri for your help.
by ankitprakashntpc
Sat Jan 18, 2014 8:06 am
Forum: OpenSees.exe Users
Topic: Plastic Hinge Monitoring
Replies: 4
Views: 5901

Re: Plastic Hinge Monitoring

Waiting for a reply. Kindly oblige.
by ankitprakashntpc
Fri Jan 17, 2014 9:56 pm
Forum: OpenSees.exe Users
Topic: Cycle counting in fatigueMaterial
Replies: 4
Views: 3823

Re: Cycle counting in fatigueMaterial

Please reply, if anybody has any idea.
by ankitprakashntpc
Thu Jan 16, 2014 3:50 am
Forum: OpenSees.exe Users
Topic: Plastic Hinge Monitoring
Replies: 4
Views: 5901

Plastic Hinge Monitoring

Hi all, I'm working on non-linear analysis of SCBF structures. I am a bit confused regarding checking for plastic hinge formation and rotation at plastic hinge after reading some of the earlier posts. I have used nonlinearBeamColumn elements with 3 integration points with fiber section for modelling...
by ankitprakashntpc
Wed Jan 15, 2014 9:38 pm
Forum: OpenSees.exe Users
Topic: Cycle counting in fatigueMaterial
Replies: 4
Views: 3823

Cycle counting in fatigueMaterial

Dear all,

Can anybody please guide me about the method of counting no. of equivalent complete cycles experienced by an element of material wrapped with fatigueMaterial (Uriz)?

Thanks and regards,
Ankit Prakash
by ankitprakashntpc
Sat Jan 11, 2014 12:28 am
Forum: OpenSees.exe Users
Topic: SCBF Example: rigid truss elements for beams
Replies: 2
Views: 2759

Re: SCBF Example: rigid truss elements for beams

Thank you sir for the quick reply and reminding me of the basic principle of floor diaphragm. :)
by ankitprakashntpc
Fri Jan 10, 2014 2:23 am
Forum: OpenSees.exe Users
Topic: SCBF Example: rigid truss elements for beams
Replies: 2
Views: 2759

SCBF Example: rigid truss elements for beams

Dear all, I have one question about the SCBF 2D example script available on the website. The model includes "rigid truss elements to assure that the beam nodes move horizontally together" provided between the beam nodes at shear tabs. I want to know the reasoning/principle behind this, why...
by ankitprakashntpc
Sat Nov 02, 2013 6:03 pm
Forum: OpenSees.exe Users
Topic: About SCBF 2D example
Replies: 0
Views: 1417

About SCBF 2D example

Dear Vesna, For the given SCBF 2D example, can you please share the calculation for nodal masses (horizontal & vertical) or any reference for the same? I have some doubt about it. The gravity load given in the file is 0.11238 kips/in. whereas nodal horizontal mass is only 2.513 kips. If we assum...
by ankitprakashntpc
Tue Oct 29, 2013 10:33 pm
Forum: OpenSees.exe Users
Topic: calibration low cycle fatigue uriz
Replies: 2
Views: 2717

Re: calibration low cycle fatigue uriz

Perhaps, it is true that the SCBF example posted on the site does not work for drifts higher than 1% or so. Since this problem is faced by many OpenSees users including myself, I request Vesna/fmk sirs to kindly share any remedy if they have. It would be quite useful for many researchers/scholars wh...
by ankitprakashntpc
Thu Oct 24, 2013 11:59 pm
Forum: OpenSees.exe Users
Topic: SCBF 2D Analysis - Solver Problem
Replies: 9
Views: 9807

Re: SCBF 2D Analysis - Solver Problem

Dear fmk, Thank you very much for your prompt reply. I've tried all three options suggested but I'm getting the same error message. May be the problem is somewhere else in the script which I'll try to find out. Meanwhile, I've created another script for 3-storey single bay SCBF frame using Vesna's s...
by ankitprakashntpc
Tue Oct 22, 2013 3:40 am
Forum: OpenSees.exe Users
Topic: SCBF 2D Analysis - Solver Problem
Replies: 9
Views: 9807

SCBF 2D Analysis - Solver Problem

I am trying to model a multi-bay 3 storey steel frame using the script by Vesna. I have used almost all the solvers including BandGeneral and UmfPack but they are failing from start showing the following as error: WARNING BandGenLinLapackSolver::solve() -LAPACK routine returned 1 WARNING NewtonRaphs...