Shows how to numerically find the natural frequencies of a building using Mathcad. This is a very simple analysis assuming only one degree of freedom at each story level.
Thank you for your thorough explanation, very helpful! I am using MATLAB and I'm sure it is pretty much the same thing as mathcad, could you also update the code used for this video? That would be great
Hello again.. i have asked the same doubt in your previous video, i am asking again... I have made a physical model of the same frame that you have considered in the video.. Mass of each storey equal so is stiffness. My main question is, while calculating lateral stiffness of each floor or storey, u considered 24EI/L^3 since there are 2 columns (and 2D figure), but in actual 3D model it would have 4 Columns so should i still consider 24EI/L^3 or go for 48EI/L^3?? would really appreciate your assistance...
@@Lado93 thanks for the help... I have practically calculated natural frequency as well with the help of an accelerometer and compared with theoretical one like in this video.... By considering 2 columns in calculation i found the ans similar to the one i calculated from accelerometer... By considering 4 columns the ans came double 😂
The process is exactly the same, just use 6x6 matrices for your mass and stiffness matrices. All other syntax is the same and you will get all six frequencies and mode shapes at once.
Your 3:40 min video helped me as a 2-3 hours seminar! Thank you!
Great video! gladly to be your 1000 subscriber :D
Thank you for your thorough explanation, very helpful! I am using MATLAB and I'm sure it is pretty much the same thing as mathcad, could you also update the code used for this video? That would be great
Thanks You! Excelent explain!
Hello again.. i have asked the same doubt in your previous video, i am asking again... I have made a physical model of the same frame that you have considered in the video.. Mass of each storey equal so is stiffness. My main question is, while calculating lateral stiffness of each floor or storey, u considered 24EI/L^3 since there are 2 columns (and 2D figure), but in actual 3D model it would have 4 Columns so should i still consider 24EI/L^3 or go for 48EI/L^3?? would really appreciate your assistance...
No, you are using 2 columns in calculation because you're calculating natural frequencies of one row (column, floor)
@@Lado93 thanks for the help... I have practically calculated natural frequency as well with the help of an accelerometer and compared with theoretical one like in this video....
By considering 2 columns in calculation i found the ans similar to the one i calculated from accelerometer... By considering 4 columns the ans came double 😂
thank you! very great help!
How to solve 6*6 matrices to find eigenvalues in mathcad???
The process is exactly the same, just use 6x6 matrices for your mass and stiffness matrices. All other syntax is the same and you will get all six frequencies and mode shapes at once.
@@WisconsinEngineerUWP thank you Sir.