Search found 20 matches

by aylsworth
Mon Feb 26, 2018 7:26 am
Forum: OpenSees.exe Users
Topic: Modelling springs for plastic hinge of column/beam
Replies: 19
Views: 6915

Re: Modelling springs for plastic hinge of column/beam

No need for section aggregator if you just used zerolength element to assign the shear springs

You can use both. This might help you.

http://opensees.berkeley.edu/wiki/image ... Manual.pdf
by aylsworth
Mon Nov 20, 2017 7:51 am
Forum: Documentation
Topic: Hysteretic material reference
Replies: 2
Views: 2299

Re: Hysteretic material reference

Hi. I think I found the reference for this hysteretic material. Check "Modeling of cyclic shear behavior in RC members" by Angelo D'Ambrisi and Filip Filippou (1999). I think this is where this uniaxialmaterial was taken cchisari wrote: > Dear all, > > I would like to understand (and report in a pap...
by aylsworth
Sun Sep 24, 2017 7:33 am
Forum: OpenSees.exe Users
Topic: Error on new uniaxialmaterial
Replies: 2
Views: 940

Re: Error on new uniaxialmaterial

ismailqeshta wrote: > I think the load factor and number of steps need to be corrected. The first > step to identify the problem is to make sure that their multiplication is > always equal to 1. This can, at least, ensure that you obtain the targeted > total applied load. Thanks for your reply! Appa...
by aylsworth
Sun Sep 24, 2017 7:16 am
Forum: OpenSees.exe Users
Topic: stdBrick - truss element assembly
Replies: 0
Views: 578

stdBrick - truss element assembly

Hi, I am trying to model the on shown in the photo link below: https://drive.google.com/open?id=0BzIal1rnyVw9UHR6UU5wM3JZcXc I am trying to model it by using a stdBrick element for the prismatic column (8 nodes defined - disregarding the vertical links) connected by 8 diagonal truss elements (I just...
by aylsworth
Mon Sep 18, 2017 5:49 am
Forum: OpenSees.exe Users
Topic: Zero length elements with shear-axial interaction
Replies: 34
Views: 9293

Re: Zero length elements with shear-axial interaction

selimgunay wrote:
> Please indicate your contact email. I will send it to interested people
> soon.

Hi,

I am interested on the shear-flexure interaction on zero length element source code. My email address is pcgarcia@up.edu.ph. I am also working on the same topic.

Thanks,

Patrick
by aylsworth
Sat Sep 02, 2017 9:54 am
Forum: Documentation
Topic: Hysteretic material reference
Replies: 2
Views: 2299

Re: Hysteretic material reference

I also have the same question. But I think the best way is to just add a new hysteretic material with specific degradation rule
by aylsworth
Sat Sep 02, 2017 9:52 am
Forum: OpenSees.exe Users
Topic: Zero length elements with shear-axial interaction
Replies: 34
Views: 9293

Re: Zero length elements with shear-axial interaction

Hi! Can I also get a copy of your sourcecode? Thanks!

aylsworthgarcia@gmail.com
by aylsworth
Sat Sep 02, 2017 9:48 am
Forum: OpenSees.exe Users
Topic: Error on new uniaxialmaterial
Replies: 2
Views: 940

Error on new uniaxialmaterial

Hi, Need help on my new uniaxialmaterial. I already compiled and obtained a dll file. However, when I loaded it in Opensees, it says: WARNING: numeric analysis returns 1 -- Umfpackgenlinsolver::solve WARNING NewtonRaphson::solveCurrentStep() - the LinearSysofEqn failed in solve() StaticAnalysis::ana...
by aylsworth
Wed Jun 28, 2017 1:50 am
Forum: Documentation
Topic: We are collecting OPENSEES User-Requirements Data
Replies: 19
Views: 16232

Re: We are collecting OPENSEES User-Requirements Data

Hysteretic rule on loading, unloading, and reloading such as Takeda, Fukada, Clough, etc. in complement to uniaxialMaterial Hysteretic
by aylsworth
Tue Jun 27, 2017 6:41 am
Forum: OpenSees.exe Users
Topic: Modelling springs for plastic hinge of column/beam
Replies: 19
Views: 6915

Re: Modelling springs for plastic hinge of column/beam

Thanks for the help Sir! I was able to run the model now though the result is somehow different from the cyclic data that I have.
by aylsworth
Fri Jun 16, 2017 6:49 am
Forum: OpenSees.exe Users
Topic: Modelling springs for plastic hinge of column/beam
Replies: 19
Views: 6915

Re: Modelling springs for plastic hinge of column/beam

Yes SIr. The code I used is uniaxialMaterial Hysteretic $ColMatTagFlex $Mcr $Mdcr $My $Mdy $Mu $Mdu [expr -$Mcr] [expr -$Mdcr] [expr -$My] [expr -$Mdy] [expr -$Mu] [expr -$Mdu] $pinchX $pinchY 0 0 0 4 6; When I remove the 4 6 in the last part of the code, the programs terminates automatically when I...
by aylsworth
Thu Jun 15, 2017 2:44 am
Forum: OpenSees.exe Users
Topic: Modelling springs for plastic hinge of column/beam
Replies: 19
Views: 6915

Re: Modelling springs for plastic hinge of column/beam

For the rotation spring, is it possible to have a user-define limit curve for the uniaxialMaterial Hysteretic as when I try to run the code, it says to define limitcurve after $damage2 and DOF right after it. uniaxialMaterial Hysteretic $matTag $s1p $e1p $s2p $e2p <$s3p $e3p> $s1n $e1n $s2n $e2n <$s...
by aylsworth
Thu Jun 08, 2017 11:00 pm
Forum: OpenSees.exe Users
Topic: Modelling springs for plastic hinge of column/beam
Replies: 19
Views: 6915

Re: Modelling springs for plastic hinge of column/beam

selimgunay wrote: > Please use the axial material directly in the zerolength element in > direction 2 and define your beam column element as elasticBeamColumn. Thank you Sir! I was able to model the springs. By the way, I have another question, is the shear spring incorporated in zerolength element ...