Search found 586 matches

by mhscott
Tue Mar 16, 2021 6:28 am
Forum: OpenSees.exe Users
Topic: problem with using remove element command in SSPbrickUP element
Replies: 3
Views: 518

Re: problem with using remove element command in SSPbrickUP element

Sounds like a bug. Please post the issue and a minimum working example at OpenSees GitHub:

https://github.com/OpenSees/OpenSees/issues
by mhscott
Sun Mar 14, 2021 7:04 am
Forum: OpenSees.exe Users
Topic: the problem of could not create uniaxialMaterial ConcreteD?
Replies: 6
Views: 798

Re: the problem of could not create uniaxialMaterial ConcreteD?

Try with the latest download, which is version 3.2.2
by mhscott
Sat Mar 13, 2021 6:50 am
Forum: OpenSees.exe Users
Topic: the problem of could not create uniaxialMaterial ConcreteD?
Replies: 6
Views: 798

Re: the problem of could not create uniaxialMaterial ConcreteD?

Seems to be working with the latest source code. What version of OpenSees are you using?
by mhscott
Thu Mar 11, 2021 6:15 am
Forum: OpenSeesPy
Topic: openseespy on HPC parallel scheduler
Replies: 2
Views: 622

Re: openseespy on HPC parallel scheduler

This video might be helpful: https://youtu.be/vjGm2kM5Ihc
by mhscott
Mon Mar 08, 2021 6:06 am
Forum: OpenSees.exe Users
Topic: large displacement large strain
Replies: 7
Views: 1120

Re: large displacement large strain

Yes
by mhscott
Fri Mar 05, 2021 7:11 am
Forum: OpenSeesPy
Topic: Kernel dead with node recorder
Replies: 3
Views: 644

Re: Kernel dead with node recorder

Can you provide a minimum working example script that replicates the issue?
by mhscott
Thu Mar 04, 2021 6:32 am
Forum: OpenSees.exe Users
Topic: large displacement large strain
Replies: 7
Views: 1120

Re: large displacement large strain

An easy way to do both material and geometric nonlinear with frame elements is to use a "corotational mesh": https://wp.me/pbejzW-Bh
by mhscott
Thu Mar 04, 2021 6:30 am
Forum: OpenSees.exe Users
Topic: WARNING insufficient arguments (with geomTransf function)
Replies: 1
Views: 539

Re: WARNING insufficient arguments (with geomTransf function)

For 3D models, you have to specify a vector in the x-z plane.

https://youtu.be/1IMasmvlVwc
by mhscott
Mon Mar 01, 2021 5:39 am
Forum: OpenSees.exe Users
Topic: Lumped Mass system
Replies: 2
Views: 621

Re: Lumped Mass system

Do not use the Linear algorithm if you have nonlinear response! Use Newton.
by mhscott
Sun Feb 28, 2021 6:14 am
Forum: OpenSees.exe Users
Topic: MDOF lumped mass model
Replies: 4
Views: 750

Re: MDOF lumped mass model

No
by mhscott
Sat Feb 27, 2021 6:08 am
Forum: OpenSees.exe Users
Topic: MDOF lumped mass model
Replies: 4
Views: 750

Re: MDOF lumped mass model

Eigenvalue analysis is not required to do response history analysis.
by mhscott
Thu Feb 25, 2021 5:38 am
Forum: OpenSeesPy
Topic: Openseespy can't calculate all seismic load steps completely
Replies: 2
Views: 648

Re: Openseespy can't calculate all seismic load steps completely

Please provide more details. Are you sure the models are exactly the same?
by mhscott
Sun Feb 21, 2021 9:17 pm
Forum: OpenSeesPy
Topic: WARNING element type ShellNLDKGT is unknown
Replies: 1
Views: 521

Re: WARNING element type ShellNLDKGT is unknown

Thanks for reporting this. Looks like this element is in Tcl but not in the Python interpreter for some reason. I will add it.
by mhscott
Wed Feb 17, 2021 6:00 am
Forum: OpenSees.exe Users
Topic: only-compression material
Replies: 1
Views: 508

Re: only-compression material

Use Hysteretic or MultiLinear material and set the strength values on the tension side to be very low. It's not elegant, but it should work.
by mhscott
Wed Feb 17, 2021 5:57 am
Forum: OpenSees.exe Users
Topic: When buckling analysis in OpenSees?
Replies: 1
Views: 533

Re: When buckling analysis in OpenSees?

Probably not. But you can perform direct analyses to get buckling loads: https://wp.me/pbejzW-Bh