Consider a 2D simply supported beam with one end Knife edge and other with roller support. It has FFR at one end (Knife edge) and RFR at another end (Roller Edge). Hence the total DOF is 3 for a Simply Supported Beam. Am I correct?
It really depends on whether you're dealing with a 2D or 3D model as well as how closely you want to simulate reality. If your structure is in the 2D X-Y plane then you probably don't want Z-axis translation, but this can also be the case in 3D if you're considering an ideal support.
I remember receiving engineering lessons from Sam back in the day. Great memories! Good luck guys on continued success :)
Taking a Finite Element (NASTRAN) class this final semester, this helped. Cheers!
No worries WJ, hope this helps!
Thank you so much Sam! UA-cam recommended that I watch your video today, 11 May, 2020.
Thanks Mitchell - glad you enjoyed it :)
well explained. We use constrained and unconstrained. Dof= f-r will tell you the number of dof.
Good stuff 👍
basic concepts and informative, thanks.
Consider a 2D simply supported beam with one end Knife edge and other with roller support. It has FFR at one end (Knife edge) and RFR at another end (Roller Edge). Hence the total DOF is 3 for a Simply Supported Beam. Am I correct?
I am doing FEM analysis and in input file it shows total DOFs 7. It is a composite beam and slab plate. I wonder which is 7th DOF?
Thank You Sir 🌺
how in roller support translation about z axis is not allowed?
Can u upload lesson on microstran as well?
Nitpick: Translation is movement *parallel to" an axis.
Agreed, but “along” is more intuitive
@@mayam3072 Like I said, it was a nitpick, but if you want accuracy, you say parallel.
what is the kinematic indeterminacy of a cantilever beam with & without axial deformation.
can u make the video for degree of freedom for redundant link or how ro calculate the degree of freedom in plane mechNism
that could be very helpful.
so informative
^^Really informative! thank you
In roller support why is the "Z translation " fixed ? Shouldn't it be "R" because it would allow translation in z axis. :/
Same question. why is z transition fixed for the roller support?
It really depends on whether you're dealing with a 2D or 3D model as well as how closely you want to simulate reality. If your structure is in the 2D X-Y plane then you probably don't want Z-axis translation, but this can also be the case in 3D if you're considering an ideal support.
so if we are considering ideal 3D model we can take Z translation as R in above case
??
thank you
Wouldn't the roller be RFFFFF? The roller only allows translation in the x direction.
Hi Walt. A roller does not restrain the rotations. So the last 3 would be RRR.
@@SkyCiv Why the roller end not translating in z direction?
finally, a non-indian person on youtube
The accent is hell-a-hard to understand when your trying to learn new concepts :D
I know right. I am indian and I am fed up with tutorials full of indian accent 😂
wao
corr
Why is Sam so hot? Haha.
I know right? ughhh