Understanding Degrees of Freedom

Concept of DoF is well explained in this video lecture with help of animation of mechanisms. This video covers topic of higher pair, lower pair and mobility equation. Degrees of freedom of 4 bar linkage, cam and follower mechanism and 5 bar linkage are worked out here.

[renuprakash]

NOW I HAVE THE CONFIDENCE TO FACE THEORY OF MACHINES. YOUR EFFORT HAS MADE SO MUCH CHANGES IN MANY OF OUR MINDS. THANK YOU MUCH.

[themusicalhayes]

This channel is pretty good at explaining things. I really feel that if the channel owner were to hire a voice actor to narrate the video scripts, this channel would really flourish!

[pedropaisbarroso]

03:45 you said 3 Lp but did the equation correctly. You helped me to understand it! Thanks

[andjelatatarovic]

everything makes so much more sense to me now! thanks!

[ThatNissanGuy]

my only complaint is, use a real person instead of microsoft bob

[akilarajapaksha]

It's just a five minute video.. But i learnt so much from this video that i couldn't understand by self-studying for several hours... So, Thank you, who ever uploaded this video😍😍😍😍.... The voice was not a problem for me 😃

[xerenityapexlegends]

2:40 to nitpick, the animation implies 2DOF as it is a cylinder joint that can rotate and still has space to slide along the rod

[krshnakmt]

i couldnt understand why only rotational degree of freedom in a plane ... visualizing it makes it more understandable. great work!!

[thewakakeboarder]

@3:46 should say 4 links AND 4 LOWER PAIRS

[emreyilmaz]

1:40 why would each link would have three degrees of freedom if they were not connected? If they were not connected they could rotate around the vertical axis and translate along the horizontal axis, what is the third one?

[pauls]

more recent clarification for advanced students! - a rigid body can also have an additional DOF in that temperature or pressure can deform it's alignment or dimensions, so in some cases it can 7 DOF. we must take in to account it's environment which may without translation or rotation, incorporate any various twisting deformation in 3 planes

[prajaktapagar]

Thanks sir.
The video have cleared my concepts

[buttiraviteja]

In slider crank mechanism, one crank angle is sufficient to define the position. So DOF of slider crank is one.

[BurgerKingNationalist]

Digibro sent me here. Good video man it really helped.

[creativesisters]

4:11 how is the slider link 5 a lower pair? it has surface contact why then? could someone elaborate

[lathikawathsara]

It's really very helpful. Thank you ✌️

[mehran]

Thank you for the great video. Just a small correction: DOF is the MINIMUM number of INDEPENDENT variables dad describes the position of every point in the system.

[lorenzoparrabbi]

What's the name of the structure on the left at the beginning of the video?

[Troynjk]

How many degrees of freedom an object can have at the same time? For example, a sphere is spinning clockwise and moving forward at the same time, i.e. it’s using 2 out of 6 degrees of freedom, can it have more?

[ashutoshmaheshwari]

how easily you explained mate...thanks