Search found 868 matches

by mhscott
Wed Mar 06, 2024 10:57 am
Forum: OpenSeesPy
Topic: Cannot Solve Eigenvalues
Replies: 7
Views: 241

Re: Cannot Solve Eigenvalues

I didn't see that. You'll have to figure out what's going on. Start with simple models and build up from there.
by mhscott
Wed Mar 06, 2024 9:29 am
Forum: OpenSeesPy
Topic: Cannot Solve Eigenvalues
Replies: 7
Views: 241

Re: Cannot Solve Eigenvalues

I see. Your model has no mass.
by mhscott
Wed Mar 06, 2024 6:03 am
Forum: OpenSeesPy
Topic: Cannot Solve Eigenvalues
Replies: 7
Views: 241

Re: Cannot Solve Eigenvalues

There is an error in your model definition, e.g., insufficient boundary conditions or floating nodes.
by mhscott
Tue Feb 27, 2024 6:12 am
Forum: Framework
Topic: A C++ ElasticBeam3d problem
Replies: 3
Views: 280

Re: A C++ ElasticBeam3d problem

Your vecxz is parallel to the x-axis of the element

https://portwooddigital.com/2020/08/08/ ... x-z-plane/
by mhscott
Tue Jan 23, 2024 4:17 pm
Forum: Parallel Processing
Topic: Ability to compile newer version of OpenSeesSP
Replies: 2
Views: 1167

Re: Ability to compile newer version of OpenSeesSP

You may want to try a virtual machine with OpenSeesSP already pre-compiled for Tcl and Python:
https://secondsees.com/opensees-ami-usage-instructions/

Even though it runs on LInux, you can access the virtual machine from Windows.
by mhscott
Thu Jan 18, 2024 9:19 pm
Forum: OpenSees.exe Users
Topic: Please help us to resolve the error!!
Replies: 1
Views: 830

Re: Please help us to resolve the error!!

Check your boundary conditions and nodal fixities. You have a rigid body mode in your model.

https://portwooddigital.com/2021/09/12/ ... -to-solve/
by mhscott
Wed Jan 10, 2024 5:01 am
Forum: OpenSees.exe Users
Topic: Mainshock-aftershock sequences
Replies: 6
Views: 1529

Re: Mainshock-aftershock sequences

It's likely sendSelf and recvSelf are not implemented for that material. You can inquire with the developer.
by mhscott
Tue Jan 09, 2024 7:23 am
Forum: OpenSees.exe Users
Topic: Mainshock-aftershock sequences
Replies: 6
Views: 1529

Re: Mainshock-aftershock sequences

Which material model in the layered shell elements?
by mhscott
Mon Jan 08, 2024 5:43 am
Forum: OpenSees.exe Users
Topic: Mainshock-aftershock sequences
Replies: 6
Views: 1529

Re: Mainshock-aftershock sequences

sendSelf and recvSelf are not implemented correctly for the elements and materials you are using.

Which elements and materials are in your model?
by mhscott
Sat Jan 06, 2024 7:20 am
Forum: OpenSees.exe Users
Topic: 3DRCframe-Vertical frequency/period/eigenvalue
Replies: 2
Views: 1021

Re: 3DRCframe-Vertical frequency/period/eigenvalue

There is no difference between "horizontal" and "vertical" periods. Periods are periods.

Define mass and stiffness in the vertical direction and you will get an eigenvalue that corresponds to vibration in the vertical direction.
by mhscott
Wed Jan 03, 2024 3:01 pm
Forum: OpenSees.exe Users
Topic: BoucWen Material Yield Point
Replies: 4
Views: 1219

Re: BoucWen Material Yield Point

I don't know all the details, but check Table 5.1 and Figure 5.5 of the Haukaas and ADK PEER report shown on the wiki page.
by mhscott
Wed Jan 03, 2024 1:53 pm
Forum: OpenSees.exe Users
Topic: BoucWen Material Yield Point
Replies: 4
Views: 1219

Re: BoucWen Material Yield Point

Which material? There's a few variations/implementations of BoucWen