Search found 287 matches

by STKO Team
Tue Oct 20, 2020 9:13 am
Forum: OpenSees Sequential
Topic: How to consider the rotational mass in linear elastic static analysis?
Replies: 8
Views: 57

Re: How to consider the rotational mass in linear elastic static analysis?

Ok now I understand what you are trying to do. I remember that you asked me why STKO does not plot the rotational mass given by the translational mass rotating about the center of gravity... This is something done in post-processing, you don't need to put that rotational mass manually in the floor's...
by STKO Team
Mon Oct 19, 2020 3:58 pm
Forum: Post processing and data visualization
Topic: OpenSeesMP and Monitor Function
Replies: 4
Views: 38

Re: OpenSeesMP and Monitor Function

Hi Vefa, The monitor function should work for OpenSeesMP as well. Could you show the error that you have? Also it seems that "download files" link of the 14th webinar (interactions) directs us to the 13th webinar (common errors). Didn't want to open a new topic for this. This is the link on our webs...
by STKO Team
Mon Oct 19, 2020 3:56 pm
Forum: OpenSees Sequential
Topic: How to consider the rotational mass in linear elastic static analysis?
Replies: 8
Views: 57

Re: How to consider the rotational mass in linear elastic static analysis?

It is not really clear to me what you are asking for... If you want to input rotational masses you have the RotationalMass condition
by STKO Team
Mon Oct 19, 2020 3:09 pm
Forum: Interaction
Topic: Difference between RigidLink Beam or Bar
Replies: 17
Views: 265

Re: Difference between RigidLink Beam or Bar

Ok now it works. See the attached file: compositebeam.zip The main error was due to the lambda parameter of the Concrete02. You set it to 0.1, but it was too small, leading to a non-physical hysteretic loop (use the material tester to check that your parameters are correct) C02.png Then I made few o...
by STKO Team
Mon Oct 19, 2020 8:50 am
Forum: OpenSees MP
Topic: Parameter study
Replies: 8
Views: 448

Re: Parameter study

This is simple due to the fact that partitioned models renames the output MPCO and MPCO.CDATA files using another string to identify the partition number. Just change the last lines of the Initial Loop from this: # this is the name STKO gave it... make sure to use the escape character before the $ c...
by STKO Team
Mon Oct 19, 2020 8:40 am
Forum: Analysis
Topic: Plot Pushover Curve/Base shear Vs Top Disp Curve
Replies: 2
Views: 102

Re: Plot Pushover Curve/Base shear Vs Top Disp Curve

You don't see anything because the Monitor was places after the pushover analysis. Keep in mind the the monitor start plotting at the exact time you place it in your analysis steps. So I just moved it before the pushover analysis using the Up-Arrow button in the top-right corner of the work tree. Th...
by STKO Team
Mon Oct 19, 2020 8:29 am
Forum: Property
Topic: Material Property (Damage TC3D)
Replies: 1
Views: 30

Re: Material Property (Damage TC3D)

The description of each material parameter is given in the bottom text-box of the Property Editor, whenever you click on a material parameter. Here is a reference for the DamageTC3D material. Though, at the time that article was written, that material model was not implemented in OpenSees, but in an...
by STKO Team
Mon Oct 19, 2020 8:26 am
Forum: Interaction
Topic: Difference between RigidLink Beam or Bar
Replies: 17
Views: 265

Re: Difference between RigidLink Beam or Bar

It is correct, assuming that the zeroLength between the 2 nodes are correctly defined in all necessary directions. There could be many reasons for non-convergence. Start by giving the zerolength an elastic material. If you keep having convergence problems, then it means that it is not due to materia...
by STKO Team
Mon Oct 19, 2020 8:13 am
Forum: Geometry
Topic: Question about elastic shell element
Replies: 8
Views: 165

Re: Question about elastic shell element

1. What do "scaleDrilling" and "updateBasis" mean? I don't see the explanation in OpenSees manual. updateBasis : It is not documented but it is in the standard OpenSees code. If you check it, it will use nonlinear geometric analysis (large displacement and rotation) for those shell elements. scaleD...
by STKO Team
Thu Oct 15, 2020 8:29 am
Forum: Interaction
Topic: Difference between RigidLink Beam or Bar
Replies: 17
Views: 265

Re: Difference between RigidLink Beam or Bar

The "bar" type is like an equalDOF for the translational DOFs: let's say you select both displacement and rotations, is constraints the slave DOFs to be equal to the respective master DOFs. For a 2D case it enforces the following: Ux(slave) = Ux(master) Uy(slave) = Uy(master) If you look at it in ma...