Mod-01 Lec-03 Introduction to Finite Element Method

[@andresyesidmorenovilla7888]

I understood from this Mr. In one hour, what I didn't understand from my professor in one semester

[@abhishekchakrabarty2930]

may be now your basic concept is strong now than you had during your semester classes

[@Akash-xw4wt]

@@abhishekchakrabarty2930 at 12:55 why we is doing (Ui-Uj)

[@abhishekchakrabarty2930]

@@Akash-xw4wt this is the net displacement of the nodes since 2 ends have different displacements,hence the net displacement has been taken into account

[@Akash-xw4wt]

@@abhishekchakrabarty2930 thank you so much.

[@abhishekchakrabarty2930]

@@Akash-xw4wt welcome

[@jessicasantosmartins7511]

Thank you very much for this lectures. I am from Brazil and it is helping me a lot.

[@zacharywangui7547]

Great

[@indikabatagoda94]

I was slightly sceptical of the quality of teaching in the video, but i was proven very wrong. I am a student in Australia and I was super happy with the way that the professor taught. Thank you very much for posting such videos for free.

[@andreasnilsson4861]

J

[@niks660097]

they are not free, but taken and posted here from a paid correspondence service/course..

[@jobinjoy8065]

Within the short span of time, Sir you have covered a lot of concepts very effectively. Your students are fortunate to have you as a mentor. Thank you, sir.

[@phani.05]

This lecture directly went into my brain , thank you sir, now i understand why IIT professors are so great.

[@dtbrough]

Explained in a way that's easy to understand and a pace thats easy to follow.

[@2aa22a]

Folks...He is professor at IIT - Premier institute in India. It is very coveted position in India and competition is fierce. Most of the time, these professors complete their PHDs in US and come back. I studied at IIT. Students from IITs go on to have very successful careers due to the solid foundation.

[@prathameshnavghare6682]

What is your Full name and in which IIT have you studied, which branch have you taken ?

[@DinkanFollower]

Boy he has mastered teaching. Every word he says is at its correct place.

[@rodrigodigaoi]

Great class ! Here from Brazil. It's helping me a lot. Congratulations to the Professor Dr. R. Krishnakumar and the NPTEL.

[@nabaatalb3126]

i wanna give u abig thanks , i have an exam and i have not understand any word from the teacher , u make it too simple to me ^ - ^

[@engineeringedu5437]

this is by far the simplest video for a very complicated topic in Engineering.. Hats off to you PRoff..

[@Sigvardr]

Greetings from Bulgaria! Great lecture series, thank you so much for sharing it!

[@miguelalfonsomendez2224]

Clear, comprehensive and easy-to-understand. Very nice job, thank you

[@Akash-xw4wt]

35:17 why they are doing k1+k2 at middle of matrix. pls explain

[@aaronherculanogonsalves7851]

@@Akash-xw4wt For getting a global stiffness matrix we add the local stiffness matrices

[@sigmarule5348]

First Nptel video jo samaj mai aagyi🙏🙏🙊

[@salem201188]

I really love Indians Profs...the best to explain well and in easy way...

[@eldoradodiago2553]

i like this guy ! better then my lazy technology orinetated lecturers half snoring as they sit down and click away on powerpoint.

[@xxtravisxxify]

Half snoring :D

[@allenli4831]

This dude speak best English in Indian lecture.:D

[@antoniosales3059]

Awsome didactic .... thk u nptel ... thk u ... governement of India for this attitude ..

[@lucasemerickfc]

Congrats on the outstanding way of teaching! Very noble professional

[@rzabayoglu2415]

Excellent lecture. I appreciate the effort put to explain the essence of the formulas rather than simply writing them down. Thanks a lot.

[@StricklyNoTomatoes]

this professor is really good

[@ashutoshacharya316]

If you write u1 and u2 instead of ui and uj, and write F1 and F2 instead of Fi, Fj, you can easily interpret the physical meaning that " kij is the force that has to be applied at j in order to have unit displacement at I"

[@dipangshusaha8566]

Sir, I have seen today first. Really good for anyone. I want to attain all of your lecture one by one.

[@sandipadhikari644]

Now he works in Deep Learnning .

[@rashmivanjare4114]

Thank you for the video. FIVE stars to this man he is the best teacher.....

[@arunkamble5174]

YES IT IS MOST LIKELY TO HAVE YOUR LECTURE

[@Rujenz7]

Thanks , I 'm from Colombia and send you my regards.

[@saiteja7711]

46:30 Why the externally applied forces are considered, but not the Internally developed forces due to stresses? Please clarify.

[@AmbroseOpio]

Very interesting lecture

[@umeshav9]

Easy to understand FEA. Very good lecturing...

[@ErfanN29]

EXCELLENT, OUTSTANDING..........

[@cleisonarmandomanriqueagui9176]

the best ... spreading the last knowledge

[@nithishreddysomareddy9404]

Excellent explanation

[@kevin7dave]

Genius level teaching. Thank you

[@albert0017]

thanks for your teaching which helps me a lot~

[@himanshupant5370]

At 6:53 how did you combined both the Fi and Fj ?

[@Akash-xw4wt]

35:17 why they are doing k1+k2 at middle of matrix. pls explain

[@irfanhanief1147]

What an amazing teacher ❤

[@Ben2kool4school]

Heck of a lot better than my prof :p

[@YassirAsiri]

Greetings from ksa ! Great lecture series, thank you so much for sharing it!

[@omerdogan85234]

Excellent, clear, step by step lecture

[@isnotimportant6587]

Out standing explanation 🙌🙌

[@rajeshwariumashankar8556]

Fantastic teaching !

[@mohammedqaiseruddin3775]

very clear and in a lucid manner.

[@WojciechP915]

I'm just here for that sweet sitar music. In all seriousness, this man is a very good lecturer.

[@kumarsatyam3314]

But when we took an element we considered the forces acting on that element, then why in the end while forming matrices we took F2 = 0 (why we take only external forces, while when were analyzing we had considered the forced on single element????)

[@nagaaddagalla9236]

Ui & Uj have taken based on one end fixed condition - @ 11:50 And @13:20, professor took a force matrix, for stepped shaft and told the above forces to be super positioned, If we apply super position principle Ui & Uj have to take positive as they are not resistive displacements. Can anyone please explain clearly? Thanks

[@rohitbankar1063]

Sorry I can't explain.

[@Mayuri1994ify]

practical , simple well explaineed

[@AJ-et3vf]

Awesome video! Thank you!

[@pablomartinez8601]

What he did first is the stiffness method to resolve hiperstatic estructures?

[@sreehariacharya9090]

At 10:20, F(i)=-F(j), which means opposite in direction, then why in the diagram both F(i) and F(j) in same direction.

[@AchiragChiragg]

The Fj he showed by arrow is the force on the node 2 by the element. But the Fj he mentions is the reaction force by the wall on the node 2 (opposite direction)

[@AnjanShrestha1988]

can anyone help me understand why he omitted the first row just because u1=0 at 45:14

[@SAINIVEDH]

if u multiply the row and column becomes zero so he removed them

[@S24KP6]

How? Can you elaborate - When you multiply row 1 , you get k1*0 + -k1*u2 + 0*u3= F1 which implies F1=-k1*u2

[@marikagabbianelli]

there are no external forces applied at nodes 1 or 2 - fr this reason f1 and f2 will both be 0. the only external force is applied at node 3 which is why f3=p

[@akshay6135]

Anjan: see the figure.. In the fig there are 3 node .. the nod 1 is at fixed end .. so the displacement at the fixed end become zero{u1=o}

[@lionprinceashanti7912]

Very well explained. Thank you.

[@engineeringstudy2960]

What if we apply body force with the given problem, how to solve that

[@vasanthkali05]

I could not understand the k1 k2 ui uj soooo confusing. Can any one help me in understanding.

[@Mhandisi2008]

Very interesting.

[@jonhouck4981]

I'm tackling this subject on my own efforts..its brutal

[@stephanosphilippou1300]

Question : at the end of the day isnt the fixed point just having an equivalent force to the opposite side of the force ? Why can't we put the force there ?

[@janakamohotti]

because there is no displacement at the fixed point. F=ku. when u is zero, the force there will be zero as well

[@janakamohotti]

He clearly stated that only the external forces are considered in the force matrix. (bcz internal forces are created and balanced itself by the system)

[@shiladityamajumdar7215]

I am facing a problem in assembly. If we add then won't the force F2 double?

[@Adwaith007]

A very informative lecture.

[@tuanohuu3996]

Thank so much Dr. Could you more clearly explain the position that you add the second stiffness matrix into the first stiffness matrix?

[@subashariharan8150]

i understood in the case of 2/2 matrix but not understand in the case of 3/3 matrix, means applying of third element

[@wasimshaikh1665]

How to make sure that convergence is maintained in FEM analysis ?

[@Akash-xw4wt]

@ why they are doing k1+k2 at middle of matrix. pls explain

[@Akash-xw4wt]

35:17 why they are doing k1+k2 at middle of matrix. pls explain

[@shubhamvashistha4421]

Thank you sir 🙏🏻❤️

[@MightyTechGuy]

Thank you sir for this invaluable lecture

[@prathameshmore1738]

Very Nice Lec.

[@anAlokDubey]

Well explained. Thank you

[@shettyd87]

please can you help to find out extreme value of the function for a given equation

[@nessasima8996]

This video is giving me PTSD. FEA was the hardest class i ever took.

[@usharanimude9404]

Thank you...nice explanation

[@mostafahamido9368]

good lecture, very useful. I just need to download it with the english words of what you say, like it's on the youtube. how can i do this?

[@praveshyadav4544]

+MOSTAFA HAMIDO please use freemake video downloader.

[@helloJack22]

Excellent !!

[@shamaxle1]

good lecture i understant alot

[@praveshyadav4544]

I would like to give 10-15 more likes if possible. om shanti.... thank you very much

[@kaffysandhu2452]

how to handle the uniform loading in FEA

[@wasimshaikh1665]

komal deep may be you already know this but you can integrate the shape function

[@fabioemolumento8981]

Sorry all, i know my question doesn´t fit FEM matter but what is the name of the song at the beginning?. My Indian Yoga teacher was used to sing it at the beginning and at the end of all lesson.

[@abhideepkumar1848]

+Fabio Emolumento it is prayer for peace in the world.

[@darshankirankkkk8595]

Nice information

[@mintesnotminalu3769]

very intersting tutorial

[@thanks1God.]

Désolé mais je ne comprends pas l'anglais. Y'a t'il des autres cours en français ??

[@raviteja.kammela1606]

thanks for your lecture sir..

[@iks_justice]

Amazing, thank you so much!

[@Akash-xw4wt]

35:17 why they are doing k1+k2 at middle of matrix. pls explain

[@Honey-tf2ox]

thanx alot well explained

[@lsrinivasan242]

why did he consider only the external forces?

[@omkarmadhekar7349]

very well explained

[@khodora6752]

very good lecture

[@adibfahmi1671]

nice video.....

[@johnwilliamsgt]

Our Lord and savior

[@womenincomputerscience6211]

nice i am from somali i keen on this teacher

[@Somalciviltechinsightsf9695]

From somaliland 👋

[@thinkingman6784]

please anyone how het got k1+k2 term in the stifness matrix?

[@abhijeetsalkar7557]

I havent too understood how he got the matrix after the two elements were added . Can anyone explain?

[@alfredevbade9957]

Excellent

[@darksoul4721]

Can anybody tell how he eliminated the row

[@stephanosphilippou1300]

I believe thats the way the matrix works out by mathematics. If you try to multiply the matrix they will result to be zero.

[@lsrinivasan242]

@@stephanosphilippou1300 why did he consider only the external forces?

[@siddharthvinocha3073]

best. thanks sir

[@ravigautam8685]

last few sentences were very important

[@ravindragehlot7783]

how 1st row and 1st column get cancelled for u1 = 0

[@SiriusBlack-qo3xi]

It affects other equation (ie for F2 and F3) in no way....each time the u1=0 will make its term zero.

[@bvk9686]

Because node 1 was fixed so there could be zero displacement in position of node 1. So displacement u becomes 0 and when u solve the matrix 1st row and column do get multiplied with 0 that gives the ans 0 only. So to save time we just eliminate the row n column as it's no use to continue with them

[@lsrinivasan242]

@@bvk9686 why did he consider only the external forces?

[@otiskiraklaotis]

GOOD JOBS

[@thebizzle2605]

thank you very much sir

[@sunilpaul5333]

very simple

[@Manoj_r712]

Super

[@ss_2939]

19:00

[@bipul2138]

nice