This video shows you how I assemble a stiffness matrix. I'm a visual learner and this works really well for me. Enjoy.

To follow up on the video of assembling an element stiffness matrix, I do an example on how to assemble a stiffness matrix for a frame. It's a fun and totally unrehearsed educational video! Enjoy. Don't forget to visit courses.silviasbrainery.com for more tutorial videos.

This video picks up where part 1 left off. In this video I now look at two types of condensation of the stiffness matrix, in one part I partition between the free and the restrained DOFs, in the second I do a static condensation between dynamic DOFsand static DOFs. These videos are unscripted, showing that I think it's better to understand concepts than memorize them. Enjoy!

In this video I show you how to determine all the coefficients of the 12x12 stiffness matrix for a portal frame. I didn't get to my final objective of condensing the matrix, I will create a follow-up to this video. I did this work off the cuff (not sure if this is the right expression!), so let me know if you find any inconsistencies! For more stuff, visit my web site: https://www.silviasbrainery.com/