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 Jon Mirtschin on July 31, 2017 at 2:54pm

Hi Jeremy,

Sorry for the problems. I've sent you an email.

Cheers,

Jon

Permalink Reply by Josef Taylor on August 23, 2017 at 3:37pm

Hi Jon, I've got a problem with the ggSAPConstraintLocal component; no matter what I supply to the Point input, it gives me an Invalid cast error, as shown below (using the create or find point component):

I can change the error by supplying other inappropriate data to P, but can't make it work. What's meant to go in here?

Permalink Reply by Jon Mirtschin on August 23, 2017 at 11:31pm

Hi Josef,

Constraints in SAP2000 seem to be allocated by group, so the input reflects this. Attached is an example of diaphragm constraints, local are generated in a similar way.

Let me know if this doesn't help.

Cheers,

Jon

Attachments:

170316 diaphragm constraints.gh, 22 KB

Permalink Reply by Josef Taylor on August 24, 2017 at 10:00am

Thanks Jon, that worked perfectly!

Permalink Reply by Valerio S on March 18, 2019 at 9:55am

Hi Jon/All,

I'm trying to use the GG components with mixed results.

Using the ggSAPsolver, I'm able to launch SAP and run the analysis however I'm struggling to extract results.

For instance, I've connected the ggSAPQueryNodeDisplacement into the Result Queries but the solver doesn't output any result.

What am I doing wrong?

I've flattened the inputs.

Permalink Reply by Jon Mirtschin on March 30, 2019 at 11:27pm

Hi Valerio,

Unfortunately there was an issue with the plugin, I have just updated all installer links with a new version on the downloads page at www.geometrygym.com Can you please update and let me know if it still doesn't work?

Cheers,

Jon

Permalink Reply by Gery on June 22, 2020 at 7:17am