Search found 160 matches
- Sat May 30, 2020 7:28 am
- Forum: OpenSeesPy
- Topic: Example of RC column with mixed beam element using OpenSeePy
- Replies: 4
- Views: 4649
Re: Example of RC column with mixed beam element using OpenSeePy
Looks, there will be problem on sharing files in this platform as python is indent based program
- Sat May 30, 2020 3:43 am
- Forum: OpenSeesPy
- Topic: Example of RC column with mixed beam element using OpenSeePy
- Replies: 4
- Views: 4649
Example of RC column with mixed beam element using OpenSeePy
""" Created on Thu May 28 16:27:29 2020 @author: praf_malla@hotmail.com, Nepal @ Corona time, Lockdown :D :D """ # ============================================================================= # ANALYSIS OF RC COLUMN # ============================================================================= # U...
- Sun Mar 22, 2020 7:43 pm
- Forum: OpenSees.exe Users
- Topic: NEW WORKING WITH OPENSEES
- Replies: 1
- Views: 884
Re: NEW WORKING WITH OPENSEES
there are lot of working examples. you can either google it or search on different topic in this forum
- Wed Mar 18, 2020 8:48 am
- Forum: OpenSees.exe Users
- Topic: LAYERED SHELL ELEMENT
- Replies: 2
- Views: 3031
Re: LAYERED SHELL ELEMENT
the concrete material for layered shell element has problem specially after yield load. I faced the problem when I was working shear wall model with shell elemnt
- Wed Mar 18, 2020 8:40 am
- Forum: OpenSees.exe Users
- Topic: The model was fail by convergence
- Replies: 2
- Views: 1014
Re: The model was fail by convergence
modify and add this part according to your code set controlnode $IDctrlNode set loaddirection $IDctrlDOF set currentDisp 0.0 # cyclic analysis objects # Set up analysis parameters constraints Transformation ; numberer RCM ; system BandGeneral ; test EnergyIncr 1.e-6 25 0 ; algorithm Newton ; ; # det...
- Sat Mar 14, 2020 2:28 am
- Forum: OpenSees.exe Users
- Topic: Ground motion scaling factor in minor direction
- Replies: 1
- Views: 2137
Ground motion scaling factor in minor direction
I want to perform bi-direction dynamic analysis but I do not know how to calculate the scale factor of ground motion in minor direction. Suppose I want to use ELcentro earthquake gound motion in X major direction and Y minor direction. The maximum value of ground motion is 0.25g in X-diection and 0....
- Tue Mar 10, 2020 10:52 pm
- Forum: OpenSees.exe Users
- Topic: High Frequency noise in dynamic analysis
- Replies: 0
- Views: 1254
High Frequency noise in dynamic analysis
For a couple of months, I was working on dynamic analysis of shear wall building with bolted connection. Now, I find high frequency noise in the model. The model result is in good agreement with the shake table if I take damping ratio as high as 40%. Is it possible to remove high frequency noise in ...
- Sat Mar 07, 2020 3:53 am
- Forum: OpenSees.exe Users
- Topic: High frequency noise
- Replies: 9
- Views: 7091
Re: High frequency noise
Have you solved the problem. I am also facing same problem in my model high frequency noise
- Sat Feb 15, 2020 11:40 pm
- Forum: OpenSees.exe Users
- Topic: Wall Element using the Equivalent Frame Method
- Replies: 2
- Views: 988
Re: Wall Element using the Equivalent Frame Method
Recently, I was using column as a shear wall. Addition of shear greatly affects the time period. I have added the shear section and the time period changes from 0.0006 sec to 0.0031 sec. #units mm, MPa, sec, N wipe; # file mkdir Output; # model basic -ndm 2 -ndf 3; node 1 0 0; node 2 0 375; node 3 0...
- Mon Jan 20, 2020 12:49 am
- Forum: OpenSees.exe Users
- Topic: No of cycles in displacement graph higher in dynamic analysis then the experiment
- Replies: 2
- Views: 683
Re: No of cycles in displacement graph higher in dynamic analysis then the experiment
Because of Damping, now my curve matches with the experimental result but still I could not understand, why the experimental result is not similar to the model result. Check the fig. i.e., exp curve is smooth but my model has ups and down curve matching the fundamental frequency of building Fig is i...
- Sat Jan 18, 2020 11:25 pm
- Forum: OpenSees.exe Users
- Topic: No of cycles in displacement graph higher in dynamic analysis then the experiment
- Replies: 2
- Views: 683
Re: No of cycles in displacement graph higher in dynamic analysis then the experiment
Ok, the damping coefficient affects it. with increaing alpha for initial mode i.e., mass proportional, no . of frequency for displacement can be decreased but now, the amplitude is increasing
- Sat Jan 18, 2020 5:28 am
- Forum: OpenSees.exe Users
- Topic: No of cycles in displacement graph higher in dynamic analysis then the experiment
- Replies: 2
- Views: 683
No of cycles in displacement graph higher in dynamic analysis then the experiment
I am doing a dynamic analysis of building with bolted connection and comparing a result with the shake table test. The frequency of model matches with the experiment result and is 4Hz. but in the acceleration and displacement graph of model , no of cycles of acceleration and displacement equals to t...
- Tue Dec 10, 2019 6:56 pm
- Forum: OpenSees.exe Users
- Topic: Gravity and Dynamic problems
- Replies: 2
- Views: 1124
Re: Gravity and Dynamic problems
Some of your node might be free
- Wed Dec 04, 2019 11:40 pm
- Forum: OpenSees.exe Users
- Topic: Output acceleration is greater than the input acceleration
- Replies: 1
- Views: 570
Re: Output acceleration is greater than the input acceleration
The problem is due to non-convergence in the intermediate steps. When there is non-convergence in intermediate steps, it calculates unusual too Big value. Then in the next step, it again uses this unusual big value
- Wed Dec 04, 2019 12:38 am
- Forum: OpenSees.exe Users
- Topic: Output acceleration is greater than the input acceleration
- Replies: 1
- Views: 570
Output acceleration is greater than the input acceleration
The output accelearation is same as input for about 0.1g, but when I increase the input accel to 0.3g then the ouput accel becomes about 6g. What might be the reason for the increase in output acceleration at the node.