You should check your Concrete02 input parameters for lambda, ft, and Ets
https://portwooddigital.com/2021/08/22/ ... oncrete02/
Search found 875 matches
- Fri Dec 08, 2023 5:08 am
- Forum: OpenSeesPy
- Topic: Nonconvergence problem of Concrete02
- Replies: 1
- Views: 9408
- Tue Dec 05, 2023 10:22 am
- Forum: OpenSees.exe Users
- Topic: modified the material
- Replies: 1
- Views: 2567
- Fri Dec 01, 2023 5:15 am
- Forum: OpenSeesPy
- Topic: BandSPDLinLapackSolver Error in OpenSeesPy?
- Replies: 1
- Views: 9322
Re: BandSPDLinLapackSolver Error in OpenSeesPy?
You are defining only truss elements in a 2D model with 3 DOF/node, so there is no rotational stiffness and the solver fails.
https://portwooddigital.com/2021/09/19/ ... ing-nodes/
https://portwooddigital.com/2021/09/19/ ... ing-nodes/
- Fri Dec 01, 2023 4:58 am
- Forum: Useful Scripts.
- Topic: Defining HystereticSM material
- Replies: 4
- Views: 13587
Re: Defining HystereticSM material
Use the latest version, i.e., upgrade openseespy
- Fri Dec 01, 2023 4:56 am
- Forum: OpenSees.exe Users
- Topic: SP command
- Replies: 1
- Views: 2734
Re: SP command
Displacement. Besides, strain is not a nodal property
- Thu Nov 30, 2023 9:39 am
- Forum: OpenSees.exe Users
- Topic: How to model the non-classical damping in OpenSees?
- Replies: 3
- Views: 2509
Re: How to model the non-classical damping in OpenSees?
The authors probably did something with the GimmeMCK integrator to extract the damping matrix
https://portwooddigital.com/2020/05/17/ ... fness-too/
https://portwooddigital.com/2020/05/17/ ... fness-too/
- Thu Nov 30, 2023 6:17 am
- Forum: Useful Scripts.
- Topic: Defining HystereticSM material
- Replies: 4
- Views: 13587
Re: Defining HystereticSM material
The documentation is here: https://opensees.github.io/OpenSeesDocu ... ticSM.html
- Thu Nov 30, 2023 6:14 am
- Forum: OpenSeesPy
- Topic: Two-Node Link - Damping
- Replies: 2
- Views: 6282
Re: Two-Node Link - Damping
I think you should test this out for yourself.
- Thu Nov 30, 2023 6:12 am
- Forum: OpenSees.exe Users
- Topic: How to model the non-classical damping in OpenSees?
- Replies: 3
- Views: 2509
Re: How to model the non-classical damping in OpenSees?
You can model the TMD directly using springs and dashpots: https://portwooddigital.com/2023/11/11/ ... er-models/
- Wed Nov 22, 2023 4:58 pm
- Forum: OpenSees.exe Users
- Topic: About numIntgrPts for Force-based beamcolumn element
- Replies: 4
- Views: 4699
Re: About numIntgrPts for Force-based beamcolumn element
Yes, the distributed loads enter the section state determination, in turn affecting the stiffness.
- Thu Nov 02, 2023 4:45 am
- Forum: OpenSeesPy
- Topic: Windows fatal exception: access violation
- Replies: 7
- Views: 10262
Re: Windows fatal exception: access violation
When you fix all DOFs, there are no equations to solve. Most of the solvers will give an error. Try switching to UmfPack.
http://portwooddigital.com/2020/08/27/m ... -marplots/
http://portwooddigital.com/2020/08/27/m ... -marplots/
- Wed Nov 01, 2023 3:01 am
- Forum: OpenSeesPy
- Topic: Windows fatal exception: access violation
- Replies: 7
- Views: 10262
Re: Windows fatal exception: access violation
This error can be due to so many things. Make a minimal example that replicates the issue.
- Wed Oct 25, 2023 3:00 am
- Forum: OpenSees.exe Users
- Topic: forceBeamColumn section recorder does not work in the latest version
- Replies: 2
- Views: 3740
Re: forceBeamColumn section recorder does not work in the latest version
Please post a minimal example that demonstrates the issue:
https://portwooddigital.com/2021/07/01/ ... g-example/
https://portwooddigital.com/2021/07/01/ ... g-example/
- Mon Oct 23, 2023 4:46 am
- Forum: OpenSeesPy
- Topic: Apply a triangular load on elements
- Replies: 4
- Views: 8044
Re: Apply a triangular load on elements
This post explains how: https://portwooddigital.com/2021/05/05/ ... eam-loads/
- Sun Oct 22, 2023 7:30 am
- Forum: OpenSees.exe Users
- Topic: Erratic nodal acceleration
- Replies: 4
- Views: 4165
Re: Erratic nodal acceleration
You say your model is "fairly complex". Try a smaller, simpler model to ensure the results make sense.