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Discovering OpenSees: Force-based Element vs. Displacement-based Element


 


Discovering OpenSees Series: “Force-based Element vs. Displacement-based Element"

December 14th & 15th

The next seminar in the web-based Discovering OpenSees: Surfing the Waves of OpenSees learning series will occur on December 14 & 15.  The session will be broadcast twice at times that will allow users in all time zones around the world to participate.

This 1-hour session is titled "Force-based Element vs. Displacement-based Element"  and will occur on December 14 at 9:00 am Pacific Time & on December 15 at 4:30 pm Pacific Time. This seminar will discuss the two most commonly used OpenSees elements for modeling beam-column elements: force-based element (FBE) and displacement-based element (DBE).  Although OpenSees command for defining these two elements has the same arguments, a beam-column element needs to be modeled differently using these two elements to achieve a comparable level of accuracy. The intent of this seminar is to show users how to properly model beam-column elements with both FBE and DBE. The theory behind these two elements along with two examples will be presented to users to enhance their understanding of the elements and assure their correct application.  The session agenda will include:

  • Introduction
  • Theory of force-based element
  • Theory of displacement-based element
  • Example 1 - steel beam (made up configuration that highlights modeling differences between FBE and DBE elements)
  • Example 2 - practical example (bridge RC column)
  • Summary and conclusions
  • Q&A with web participants

This seminar is intended for beginning and intermediate users but may be of benefit for users of all levels.


How can I join the seminar?
Register for the seminar on December 14 at 9:00 AM Pacific Time
Register for the seminar on December 15 at 4:30 PM Pacific Time

Once registered, you will receive a confirmation email with instructions for joining the meeting.  Prior to the event, the presentation slides will be posted at the Discovering OpenSees Wiki page.

After the seminar, please complete the short evaluation form to give OpenSees feedback and to suggest future seminar topics.


More information about this seminar topic
After an OpenSees analysis there is no output unless it is requested. There are several ways of getting output from OpenSees analysis. OpenSees commands along with Tcl commands can be combined to create different types of outputs.  In this web-based seminar, the various ways of creating output in OpenSees will be discussed and the primary use of each method will be demonstrated.  In addition, OpenSees commands for creating graphical images of OpenSees models are going to be demonstrated.  With proper use of the output options, users will find that their speed will be enhanced when checking their model's accuracy and processing data of interest after an analysis.


What’s next in the Discovering OpenSees Series?
The next Discovering OpenSees sessions will be on the following dates about the topics listed below.   Mark them on your calendar!

"Implementing Your Own Material in OpenSees"
January 25 at 9:00 am PT & January 26 at 4:30 pm PT

"Utilizing Parallel and Parameter Tools in OpenSeesLab tool to utilize HPC resources"
February 22 at 9:00 am PT & February 23 at 4:30 pm PT 

Past Discovering OpenSees Seminars – how to find past seminar recordings


For more information about the Discovering OpenSees Series including previous presentation slides, video recordings, and topics, visit the Discovering OpenSees Wiki page.

For more information about OpenSees, visit: http://opensees.berkeley.edu/