Thanks Prof. Scott, the issue has been solved. I meshed the beam and constrained its lateral movement with the fix command.
Search found 6 matches
- Mon Apr 03, 2023 10:47 pm
- Forum: OpenSeesPy
- Topic: How to constrain lateral movement?
- Replies: 2
- Views: 2504
- Wed Mar 29, 2023 12:49 pm
- Forum: OpenSeesPy
- Topic: How to constrain lateral movement?
- Replies: 2
- Views: 2504
How to constrain lateral movement?
Hello there,
I want to constrain the lateral movement of a simple elastic beam in 3D space. Since the Fix command only works on nodes, how can I implement this?
I want to constrain the lateral movement of a simple elastic beam in 3D space. Since the Fix command only works on nodes, how can I implement this?
- Thu Mar 16, 2023 9:28 am
- Forum: OpenSeesPy
- Topic: Eigenvalue analysis of a simple beam
- Replies: 4
- Views: 2488
Re: Eigenvalue analysis of a simple beam
Dear Professor Scott, It turns out that OpenSees had calculated the frequencies correctly all along! Upon further investigation, I discovered that I had meshed my model in Abaqus using B21 and B22 elements (2-node linear beam and 3-node quadratic beam), which resulted in similar results when using t...
- Thu Mar 16, 2023 5:19 am
- Forum: OpenSeesPy
- Topic: Eigenvalue analysis of a simple beam
- Replies: 4
- Views: 2488
Re: Eigenvalue analysis of a simple beam
The list of frequencies (Hz) provided by abaqus is 292.59, 516.88, 545.88, 776.87, etc. whereas the results provided by opensees is 516.87, 736.68, 1031.72, 1542.49, etc.!
- Wed Mar 15, 2023 11:07 pm
- Forum: OpenSeesPy
- Topic: Eigenvalue analysis of a simple beam
- Replies: 4
- Views: 2488
Eigenvalue analysis of a simple beam
Hi, I performed an eigen analysis on a 2D elastic beam with fixed BCs. But the results differ significantly from those of abaqus. Is there anything wrong with the following code? Best regards, import openseespy.opensees as ops import numpy as np ops.wipe() # Create model ops.model('basic', '-ndm', 2...
- Wed Mar 15, 2023 8:42 am
- Forum: OpenSeesPy
- Topic: 3D Elastic Beam Column Element
- Replies: 1
- Views: 1701
3D Elastic Beam Column Element
Hey guys,
In 3D Elastic Beam Column Element, the releasez and releasey, release Mz and My at the nodes in local coordinates?
element('elasticBeamColumn', eleTag, *eleNodes, secTag, transfTag, <'-mass', mass>, <'-cMass'> <'-releasez', releaseCode>, <'-releasey', releaseCode>)
In 3D Elastic Beam Column Element, the releasez and releasey, release Mz and My at the nodes in local coordinates?
element('elasticBeamColumn', eleTag, *eleNodes, secTag, transfTag, <'-mass', mass>, <'-cMass'> <'-releasez', releaseCode>, <'-releasey', releaseCode>)