Search found 875 matches
- Fri Sep 01, 2023 6:04 am
- Forum: OpenSeesPy
- Topic: What is the openseespy error message 'R is negative in ReinforcingSteel::SetMP()' about?
- Replies: 3
- Views: 4662
Re: What is the openseespy error message 'R is negative in ReinforcingSteel::SetMP()' about?
I'm not sure, but here is the line of source code: https://github.com/OpenSees/OpenSees/bl ... l.cpp#L941
- Thu Aug 31, 2023 6:21 pm
- Forum: OpenSeesPy
- Topic: What is the openseespy error message 'R is negative in ReinforcingSteel::SetMP()' about?
- Replies: 3
- Views: 4662
Re: What is the openseespy error message 'R is negative in ReinforcingSteel::SetMP()' about?
You should consider using other material models for your steel. ReinforcingSteel is very unstable.
- Mon Aug 28, 2023 6:21 am
- Forum: OpenSees.exe Users
- Topic: ERROR in running OpenSessMP
- Replies: 1
- Views: 3143
Re: ERROR in running OpenSessMP
You can use the OpenSees AMI on Amazon: https://aws.amazon.com/marketplace/pp/p ... zfieycxidk
Usage instructions: https://secondsees.com/opensees-ami-usage-instructions/
Everything you need is pre-installed and ready to use!
Usage instructions: https://secondsees.com/opensees-ami-usage-instructions/
Everything you need is pre-installed and ready to use!
- Sun Aug 27, 2023 12:36 pm
- Forum: Documentation
- Topic: 3D Benchmark
- Replies: 1
- Views: 5585
Re: 3D Benchmark
Your post and what you're validating are unclear. You should be the one to provide particulars and outcomes.
- Sun Aug 27, 2023 12:32 pm
- Forum: OpenSees.exe Users
- Topic: Opensees Analysis is not Valid
- Replies: 4
- Views: 3898
Re: Opensees Analysis is not Valid
Contact the authors of Protastructure Software
- Sun Aug 27, 2023 12:29 pm
- Forum: OpenSees.exe Users
- Topic: How to apply a dynamic load time history at node and a ground motion simultaneously in Transient analysis?
- Replies: 2
- Views: 2985
Re: How to apply a dynamic load time history at node and a ground motion simultaneously in Transient analysis?
Define a separate time series and load pattern for the wind load, in addition to the ground motion and uniform excitation
- Wed Aug 23, 2023 7:28 am
- Forum: OpenSeesPy
- Topic: 'Factorization failed' warning for spring static analysis using displacement control
- Replies: 2
- Views: 6294
Re: 'Factorization failed' warning for spring static analysis using displacement control
You are hitting zero stiffness on your p-y curve (you have two points with same p values 4.61E+04, 4.61E+04) and the system of equations is singular.
- Tue Aug 22, 2023 5:59 am
- Forum: OpenSees.exe Users
- Topic: Getting same pushover curves
- Replies: 12
- Views: 8309
Re: Getting same pushover curves
You haven't really shown / provided enough information for someone to know what the issue is. I know for a fact that the section aggregator works for shear, so there's something wrong with your model or your results interpretation.
I recommended starting from zero with an elastic cantilever because you know what the solution should be and you can practice building models. Many examples online have subtle differences compared to what you want to do.
I recommended starting from zero with an elastic cantilever because you know what the solution should be and you can practice building models. Many examples online have subtle differences compared to what you want to do.
- Tue Aug 22, 2023 4:11 am
- Forum: OpenSees.exe Users
- Topic: Getting same pushover curves
- Replies: 12
- Views: 8309
Re: Getting same pushover curves
I don't know what you're showing via the screenshots.
Build a simple cantilever with elastic sections, then aggregate shear. Don't start from someone else's script. Do it yourself, from zero.
Build a simple cantilever with elastic sections, then aggregate shear. Don't start from someone else's script. Do it yourself, from zero.
- Mon Aug 21, 2023 6:46 am
- Forum: OpenSees.exe Users
- Topic: Getting same pushover curves
- Replies: 12
- Views: 8309
Re: Getting same pushover curves
Try a simple cantilever with shear deformation and build up from there.
- Mon Aug 21, 2023 6:04 am
- Forum: OpenSees.exe Users
- Topic: Getting same pushover curves
- Replies: 12
- Views: 8309
Re: Getting same pushover curves
Probably a modeling issue. You have to provide more details.
- Sat Aug 19, 2023 10:47 am
- Forum: OpenSeesPy
- Topic: Viscous damper under sinusoidal displacement
- Replies: 3
- Views: 3822
Re: Viscous damper under sinusoidal displacement
Print the nodal response after the analyze command
- Tue Aug 15, 2023 4:40 am
- Forum: OpenSeesPy
- Topic: Does the cyclic analysis work in python?
- Replies: 3
- Views: 7711
Re: Does the cyclic analysis work in python?
You can dereference a list in Python by putting a * in front.
It is not uncommon to use different algorithms. Usually 'Newton' is sufficient, but you can switch through other algorithms. There are better switching strategies out there though. Search for "OpenSees smart analyze"
It is not uncommon to use different algorithms. Usually 'Newton' is sufficient, but you can switch through other algorithms. There are better switching strategies out there though. Search for "OpenSees smart analyze"
- Sun Aug 13, 2023 6:17 pm
- Forum: OpenSeesPy
- Topic: Linearly Distributed Element Load
- Replies: 3
- Views: 6493
- Sat Aug 12, 2023 7:49 am
- Forum: OpenSees.exe Users
- Topic: Validation of MITC4 element
- Replies: 1
- Views: 2818
Re: Validation of MITC4 element
Please give a reference for the pinching cylinder test.