Update parameter at every time step
Moderators: silvia, selimgunay, Moderators
Update parameter at every time step
Dear all,
I am doing time history analysis on a building with friction isolators (modeled with singleFPBearing element). However, since the isolators I want to simulate have variable curvature based on the displacement (the sliding surface is not spherical and its curvature is variable) I have to update the "R" parameter of singleFPBearing element at every time step of time history analysis and after the R value is updated based on the displacement at that step, then go to the next step.
I tried doing that using a loop and updated the R value at every step of analysis but the problem is that when I update the R value I have to define a new singleFPBearing element and replace with the old one. Doing this makes the analysis start from the beginning while the isolator has a displacement and a velocity at that step. What I need is to continue analysis from the last step. Somebody please guide how can I do this.
Regards,
I am doing time history analysis on a building with friction isolators (modeled with singleFPBearing element). However, since the isolators I want to simulate have variable curvature based on the displacement (the sliding surface is not spherical and its curvature is variable) I have to update the "R" parameter of singleFPBearing element at every time step of time history analysis and after the R value is updated based on the displacement at that step, then go to the next step.
I tried doing that using a loop and updated the R value at every step of analysis but the problem is that when I update the R value I have to define a new singleFPBearing element and replace with the old one. Doing this makes the analysis start from the beginning while the isolator has a displacement and a velocity at that step. What I need is to continue analysis from the last step. Somebody please guide how can I do this.
Regards,
Re: Update parameter at every time step
You can use updateParameter inside the loop, but it looks like these functions aren't implemented for this element. I can add the functions and it will be available in the next release.
Re: Update parameter at every time step
Added the methods so that R or Reff can be treated as a parameter
https://github.com/OpenSees/OpenSees/pull/635/files
https://github.com/OpenSees/OpenSees/pull/635/files
Re: Update parameter at every time step
Dear mhscott,
Great thanks for the immediate replies and actions. I should wait for the next release of Opensees to see the changes or I can get them earlier? Please guide.
Regards,
Great thanks for the immediate replies and actions. I should wait for the next release of Opensees to see the changes or I can get them earlier? Please guide.
Regards,