@IDS: Thank you for the explanation. I was trying to understand the value of XL YL and ZL more.
Based on the data shown, I tried to find the value of XL YL and ZL.
You included the values of 2 end points, and the rotation in radian in your excel spreadsheet is gamma (1.047197551)?
So I do...
@Ytyus: yes, the transformation matrix the one I looked for is the one that is used in K=T'.k.T. For planar transformation is a 4x4 matrix from using 2D rotation matrix for x and y component of force and displacement :)
@IDS: thanks much for this reference. Do you know any reference how to...
Hi all,
I have been searching transformation matrix for 3D frame element here and there, but could not find it.
Does anyone know what is the transformation matrix for 3D frame element in the direct stiffness matrix approach.
For the 2D beam it looks like this...
Hi all
If I have interconnected frames, when using stiffness matrix for frame I can find the reaction at each node of the space frame.
So now I have these reaction forces at each node.
Then lets say there is this node A connecting 3 frame elements a, b and c.
I know the reaction force at A...
