SAP2000

Here's a thread for questions and suggestions specific to the Geometry Gym addon to interact with SAP2000 Structural Analysis. Note you can filter my blog for posts/examples specific to SAP 2000 using the tag cloud or this link here:

http://geometrygym.blogspot.com/search/label/SAP2000

First post relates to questions raised here: http://www.grasshopper3d.com/xn/detail/2985220:Comment:597170?xg_so...

SAP2000 uses slightly different terms to other structural analysis software (ie Load Patterns are equivalent to Load Cases in most other software). I am trying to do my best to ensure the GH plugin terminology matches, but still needs improving and this doesn't help with what connects to what. If you spot something you think can be improved, please let me know.

I've attached my subtle changes to your GH def. Note that at least one of the forces needs to be activated to true to get results to emit.

I had a request to report stress the other day, but when I went to check you can only extract the force using the API, so I need to find some time to do some additional coding to calculate these from the section properties. Axial force you might be able to quickly calculate from the force using GH components.

Note also I recently enabled the ability to nominate the SAP model units (ie Feet and kips) from a right click on the ssiBake button. This should be done prior to the first exchange to SAP, so either save, close and restart Rhino, or disable the solver prior to first opening the model to make the change.

Hope it helps, look forward to hearing more.

Cheers,

Jon

Attachments:

firstdef_forsimplecase_SAP.gh, 38 KB

Replies to This Discussion

Permalink Reply by Qi WU on February 29, 2016 at 2:31pm

Hi Jon,

For the latest version of ggSAP (V18), the ggSAPCreateFrameProp component is not working properly. Is that a bug? It was working fine in your v16.1.

I have attached an example for your review.

Thanks!

Attachments:

ggSapCreateFrameProp_Error.gh, 6 KB

Permalink Reply by Jon Mirtschin on February 29, 2016 at 7:46pm

I uploaded a new installer, maybe it's something I fixed in the past two weeks (but I don't recall).

http://www.geometrygym.com/downloads If it still not working, email me and I'll help you troubleshoot.

Thanks,

Jon

Permalink Reply by Ghazal Javidan on May 15, 2017 at 5:42am

Hi Qi

I wonder if your problem solved.

I had the same problem and found that it was because of incompatibility between the Sap2000 version and the ggSap plugin version.

Just want to share this here as for others!!:

ggSap Erro

Permalink Reply by Wilbur Wong on March 15, 2016 at 4:02am

Hi Jon,

I notice there is a ggSAPBuckling Load Case component for buckling analysis. But I don't see an input for connecting a load pattern component. And there is no buckling factor query or result decompose component either. Just want to ask whether the buckling function is still in progress.

Thanks,

Wilbur

Permalink Reply by Alexia Ch on October 24, 2016 at 2:40pm

why do I get this error message? I do have sap2000 14 installed on my pc, I installed geogym, bulland ggsap and some other stuff. What do I do wrong?

Permalink Reply by Gery on March 6, 2017 at 6:45am

Hi everyone,

I'm trying to explore ggSAP.

When I want to bake examples by first going on "Open Model in SAP", Rhino crashes.

If I click on "Bake model", nothing opens neither. I'm using latest v19 of SAP2000.

Thanks in advance for your help.

Regards,

Permalink Reply by JJ T on May 1, 2017 at 12:11pm

Are there any known issues with the ggSAPLoadCrvPatch? We are having problems trying to specify different values for Pos1 and Pos2. No matter what we try in regards to positive/negative numbers we can't get the component to do anything else other than apply the loads at 0 and 1 absolute unit location of the frame element.

Can you elaborate more on what the program expects for the A and B inputs of this component or what issues might exist?

Attachments:

ggSAPLoadCrvPatch.gh, 29 KB
Capture.PNG, 70 KB

Permalink Reply by Jon Mirtschin on May 6, 2017 at 5:40am

Hi JJ T,

Thanks for reporting this, I've traced the code and implemented a fix in the latest builds.

http://www.geometrygym.com/downloads

Let me know if this doesn't help.

Cheers, Jon

Permalink Reply by Gery on May 10, 2017 at 3:37am

Hi,

I've failed to create a RC beam section property.

ggSAPCreateSectionProp requires the input "Profile" that seems to be related to the steel profile from Bull Ant list.

Could you help me ?

Thanks !

Gery

Permalink Reply by Jon Mirtschin on May 10, 2017 at 7:50am

Hi Gery,

Bullant provides some standard shape components, the RHS generates a rectangular profile if wall thickness is zero. Refer to the attached.

Let me know if that doesn't help.

Cheers,

Jon

Attachments:

170510 rectangular property.gh, 8 KB

Permalink Reply by JJ T on May 15, 2017 at 9:32am

This fixed it. Thanks!

Permalink Reply by Jeremy Thomas on July 10, 2017 at 10:51am

Hi Jon (or anyone else who is willing to provide an answer),

I've been playing with the Geometry Gym SAP2000 (v.19) API for about a month and I am having a little trouble figuring out what I'm doing wrong. I'm trying to set up a simple beam or a simple truss that I can send to SAP...just to see how things work. However, if I use some of the examples you've uploaded as a reference I get the following error message:

1. Object reference not set to an instance of an object. at GGYM.GH.Structure.ggCreateSectionProperty.SolveInstance(IGH_DataAccess DA)

It happens whenever I use the ggSAP Create Frame Properties element and plug in information into the Profile input. I've tried using the ggIFC CatalogueProfileDef as the name and profile, I've tried using ggAsymmetricIShape and inputting section property info directly...each time I get the same error. Am I doing something totally wrong or am I on the correct track?

Any help with this would be GREATLY appreciated!

Thanks,

Jeremy