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Understanding Degrees of Freedom 

Lesics
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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.

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1 авг 2024

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Комментарии : 95   
@renuprakash9995
@renuprakash9995 8 лет назад
NOW I HAVE THE CONFIDENCE TO FACE THEORY OF MACHINES. YOUR EFFORT HAS MADE SO MUCH CHANGES IN MANY OF OUR MINDS. THANK YOU SOOOOO MUCH.
@pedropaisbarroso
@pedropaisbarroso 6 лет назад
03:45 you said 3 Lp but did the equation correctly. You helped me to understand it! Thanks
@themusicalhayes
@themusicalhayes 3 года назад
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!
@andjelatatarovic8309
@andjelatatarovic8309 8 лет назад
everything makes so much more sense to me now! thanks!
@Ahsan17687
@Ahsan17687 5 лет назад
U hav more videos?
@akilarajapaksha1332
@akilarajapaksha1332 4 года назад
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 😃
@prajaktapagar4119
@prajaktapagar4119 6 лет назад
Thanks sir. The video have cleared my concepts
@aking5469
@aking5469 6 лет назад
mastered it with this one video! Thanks!
@siddharthprakash8942
@siddharthprakash8942 8 лет назад
Brilliantly explained!!!
@fjskfjdkdksofk
@fjskfjdkdksofk 9 лет назад
thank you for damn good instruction
@lathikawathsara2649
@lathikawathsara2649 4 года назад
It's really very helpful. Thank you ✌️
@krshnakmt3490
@krshnakmt3490 5 лет назад
i couldnt understand why only rotational degree of freedom in a plane ... visualizing it makes it more understandable. great work!!
@MastarCheef1337
@MastarCheef1337 7 лет назад
Digibro sent me here. Good video man it really helped.
@ashutoshmaheshwari1714
@ashutoshmaheshwari1714 6 лет назад
how easily you explained mate...thanks
@nirvanabuddhism5491
@nirvanabuddhism5491 6 лет назад
thnk u for the video, it is really helpful
@tranducthien1987
@tranducthien1987 4 года назад
Thank you very much. It is very useful.
@vishalshah331
@vishalshah331 7 лет назад
Thank you sir... For this video
@That1NissanGuy
@That1NissanGuy 11 лет назад
my only complaint is, use a real person instead of microsoft bob
@Dr.Kraig_Ren
@Dr.Kraig_Ren 2 года назад
I guess it's accent problem. Better to listen good video from Bob than from an Indian Tutor lol.
@ganishk3568
@ganishk3568 2 года назад
@@Dr.Kraig_Ren 🤭🥲🤣
@tomriddle4038
@tomriddle4038 5 лет назад
That's some quality content.. keep up the work..
@albertduplantin
@albertduplantin 8 лет назад
Good morning by france, very beautiful and interresting, do you make kinematic diagrams ? Your accent is good for french people. Thanks
@mehran1384
@mehran1384 3 года назад
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.
@zehrakiraz6805
@zehrakiraz6805 5 лет назад
finally can find a playlist without accent
@pauls5745
@pauls5745 3 года назад
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
@atharrumanabdulkalam4892
@atharrumanabdulkalam4892 5 лет назад
Thank you this vedio is helpful
@alexmorsy4908
@alexmorsy4908 3 года назад
vedio
@flxmeyt8962
@flxmeyt8962 Год назад
THANK YOU SIR!!!!
@xerenityapexlegends3940
@xerenityapexlegends3940 2 года назад
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
@alexbourlis
@alexbourlis 5 лет назад
i founf 4 DOF ( 6(3-1)-5-3-1 = 4 , -1 being for the Ball-ground contact, -3 for the the arm rotating into the ground, -5 for the pair between the two arms) for the 3D exemple at the end, is it right?
@peter_castle
@peter_castle 10 лет назад
This video was very nice i did know about DOF but i didn't know there was that fantastic equation
@belol69
@belol69 7 лет назад
Peter Castle it's degree of freedom
@subhranildas5077
@subhranildas5077 7 лет назад
I have read the lowest no of links required to form a mechanism is 4, but here we can see a 3 link mechanism, can somebody explain?
@buttiraviteja5351
@buttiraviteja5351 2 года назад
In slider crank mechanism, one crank angle is sufficient to define the position. So DOF of slider crank is one.
@pratikbose4399
@pratikbose4399 7 лет назад
Thank you very much for such an wonderful video....I have a doubt....We all know that superstructure has a negative degree of freedom....But could you please tell me the physical significance of the same or site an example??????
@simhishh
@simhishh 7 лет назад
what kind of significance brother the more the increase in negativity the more the blockage to its motion , thats why almost all the airports have curved structure with pillars having -80 degree of freedom.
@haimanotamare6178
@haimanotamare6178 7 лет назад
it is agreat explanation
@vimlendukumar3200
@vimlendukumar3200 9 лет назад
Good and beautiful.very useful.
@zakirshah5060
@zakirshah5060 6 лет назад
superb
@emreyilmaz9384
@emreyilmaz9384 3 года назад
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?
@akifa9635
@akifa9635 7 лет назад
for the third example, why is there 5 lower pairs? Why shouldn't it be higher pair?
@NUPUR-t3e
@NUPUR-t3e 2 года назад
Plz make a video on how to calculate DOF for 3D space mechanisms.....
@sumanthraogs
@sumanthraogs 7 лет назад
hello I am trying to find solution for packing of incense sticks , I need a solution to make a batch of 1000 sticks kind request as share information if you have any
@Troynjk
@Troynjk Год назад
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?
@lorenzoparrabbi5055
@lorenzoparrabbi5055 Год назад
What's the name of the structure on the left at the beginning of the video?
@Jay_Verma
@Jay_Verma 8 лет назад
did you use TTS for voice?
@Addy94T
@Addy94T 7 лет назад
I was wondering about the same.
@2creativesisters266
@2creativesisters266 2 года назад
4:11 how is the slider link 5 a lower pair? it has surface contact why then? could someone elaborate
@thewakakeboarder
@thewakakeboarder 9 лет назад
@3:46 should say 4 links AND 4 LOWER PAIRS
@user-jz7dd5oz6k
@user-jz7dd5oz6k 9 лет назад
I have a question..... if one rigid bar in space(3D) with one end fix than how many degree of freedom
@arunm9859
@arunm9859 8 лет назад
+hiren kachhadiya it's zero , because you fixed the bar. so it cannot be moved. you have constrained all the dof of the bar by fixng one end.
@krzemian
@krzemian 8 лет назад
+Arun M unless by fixed he means fixed in position but able to rotate (like the base of a crane), then it's 2 DOF
@arunm9859
@arunm9859 8 лет назад
There are two cases.. one you can fix one end. Which means no degree of freedom is permitted. Or you can pin one end. In that case it will be having rotational degre of fredom
@whatruwaiting4859
@whatruwaiting4859 5 лет назад
yes 3:44 he is saying 4 3
@elearn2957
@elearn2957 5 лет назад
Number of degrees of freedom of two particles connected by a rigid rod moving freely in plane_____________?
@pankajgupta9884
@pankajgupta9884 4 года назад
Please make more video of TOM
@weitian1504
@weitian1504 5 лет назад
good!
@tithimazumder6138
@tithimazumder6138 2 года назад
I couldn't get the 3rd no. what is the physical meaning, as we can see the wheel can rotate in a rotatory axis. On the other hand, the body is moving towards the z-axis. we have found 2 degrees of freedom, but the calculation is saying there is 1. What's wrong am I doing? But the video was tremendous, the level of thinking of the creator is beyond the expectation.
@pukkhandeviprajapati498
@pukkhandeviprajapati498 5 лет назад
Thanks
@krishnavardhanchary509
@krishnavardhanchary509 7 лет назад
make a video on gyroscope plz
@SantaWithGuns
@SantaWithGuns 7 лет назад
Is it really hard to find a microphone to talk into this day and age?
@iracingtf5051
@iracingtf5051 5 лет назад
Its a translator voice...
@krishnavardhanchary509
@krishnavardhanchary509 7 лет назад
can you please upload about gyroscopes plz?
@dougedmunds
@dougedmunds 11 месяцев назад
It's the voice of Paul bot
@saranias9957
@saranias9957 6 лет назад
Define static force analysis
@stephenalcaide1778
@stephenalcaide1778 4 года назад
Whoah!!! I walked into the wrong room. lol
@BrokenHeart-nw5fu
@BrokenHeart-nw5fu 7 лет назад
i didn't understand why he has taken in equation 2lowerpair and 1 higherpair i.e in 3(N-1)-2Lp-Hp
@ShauriePvs
@ShauriePvs 7 лет назад
2lp doesn't mean 2 lower pairs...'lp' represents no. of lower pairs and '2' represents that it restricts 2 degrees of freedom
@BrokenHeart-nw5fu
@BrokenHeart-nw5fu 7 лет назад
Shaurie Pvs thanks and why there is 3(N-1) why can't be like 3(N-1)/3(N-3)or only (N-1)
@subhranildas5077
@subhranildas5077 7 лет назад
I have read the lowest no of links required to form a mechanism is 4, but here we can see a 3 link mechanism, can somebody explain?
@ylaronedo8540
@ylaronedo8540 6 лет назад
That is a requirement to applie grashof law (s+l p + q) you would need for bars
@ylaronedo8540
@ylaronedo8540 6 лет назад
*four
@snake1625b
@snake1625b 3 года назад
It's this similar to the statistics population
@sunilkumarkushwaha7557
@sunilkumarkushwaha7557 7 лет назад
gear of defnition
@mehdirostaee2828
@mehdirostaee2828 5 лет назад
in last animation i think DoF is one because all of another variables depend on rotation of first variable if the first variable rotate another variables should rotate so they are limited! who can help me understand the concept without formula thanks.
@mehdirostaee2828
@mehdirostaee2828 5 лет назад
maybe Middle triangle doesnt depend on first joint so its depend on what? in last animation!
@TheStrelok7
@TheStrelok7 3 года назад
in 4:12 i think its 4 LP and 1 HP
@Angi4851
@Angi4851 3 года назад
Wow
@akhil999in
@akhil999in Год назад
would be much better if the geometry is accompanied by mathematical expressions and derivations. figures give only an impression, do not give a feeling of proof.
@oghk2000
@oghk2000 11 лет назад
And just what is the next video?
@MolotovWithLux
@MolotovWithLux 4 года назад
#accesstoenergy
@edwineduardohernandeznunez5102
wow
@user-dj5zc8xp4g
@user-dj5zc8xp4g 5 лет назад
No subtitles
@miholju
@miholju 4 года назад
Robot voice
@beniajisubekti6515
@beniajisubekti6515 2 года назад
I don't understand
@rishikracha8213
@rishikracha8213 5 лет назад
Pink sheep!!
@BrettRyder
@BrettRyder 5 лет назад
*E*
@pankajgupta9884
@pankajgupta9884 4 года назад
Make video in hindi
@scientium8770
@scientium8770 11 месяцев назад
I sincerely recommend everyone to not learn anything from this video. Believe me, the information provided is skewed and misses out on many things. Read a book; the information is much clearer in a book.
@krishanudebnath1959
@krishanudebnath1959 3 года назад
This man is totally confusing things and dictating things the individual bodies must have 6 degree of freedom how is he telling that it has 3 dof
@edgewaterz
@edgewaterz 5 лет назад
Great video. Horrible voice. Please let go of the computerized voices...
@zameelvisharathodi7859
@zameelvisharathodi7859 4 года назад
Thanks
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