Mohr Circle 2.MP4

[shrtman81]

Youtube Professors win again! Thanks for this video

[themrdaydreamer]

this vid is a life saver thanks

[alienodio]

thanks, my mechanics of materials teacher didn't explain any of this. 

[Mad21X]

u are simply god sent..... thanx a million

[aMammoth]

Wow this is great! My mechanics of Materials professor is absolutely terrible, but this helps soooo much.

[setare1369]

thank u it was really helpful

[ALXtheseventhson7]

hey amigo excelente video y muy buena manera de explicar apesar de que no domino muy bien el ingles entendi muy bien ja bien amigo sigue asi...:)

[unmentionables1]

thank you so much for this video. It was alot better than any text book explanation. your work has reached the Caribbean!

[gperaga]

Very helpful, thanks a lot!

[Kinnishian]

I've watched a few of the Mohr circle ones. I'm very grateful, it makes sense now. Thanks for making the videos! I intend on checking out more of them later. I think part of what helps is that everything is so clear on the board. I can take a screenshot and look at it later, and have enough information to understand everything that was going on while you were doing the problem. In other words, your videos are very clear.

[greenamatt1992]

Thank you very much!

[fa90lq]

All respect :)

[yogesh79pant]

You have done a great Job, Thanks a ton,

God Bless you with everything.

Regards

[prathamkapoor1992]

thanks a ton for posting that very helpful video..the way you explained it was fantastic..thanks once again for your very helpful video!! :D

[hockeyguy2814]

Sir I can't thank you enough for this video. You really helped me understand Mohr's circle. I have told all of my peers about this video and we will be looking to your channel for help in the future. Thanks again!

[nocebo348]

Sir, thank you kindly.

I tell my undergraduate students to look up your videos at home when and if they cannot contact me for a tutorial. It's been so successful that in most cases they don't require further explaination.

Regards, Masters of Civil / Structural Engineers Melbourne

[010200711]

เยี่ยม=Awesome

[mono7891]

Teaching is an art and you Sir, mastered it. Great video. It really helped.

[timtam124]

These videos are great, thanks very much for putting these together.

Mech undergrad from NZ

[timtam124]

These videos are great, thanks very much for putting these together.

Mech undergrad from NZ

[pgman1804]

so i have a test tomorrow and my teacher seems to love mohrs circle. you made more sense than he ever did. great job. thanks

[ollienewth]

Thanks very much for this, it was very helpful! Filled in some gaps that I didn't know were there.

Civil Engineering undergrad from UK

[guicapone2]

quick..what angle would i see maximum shear stress on the y face?

[pgman1804]

@guicapone2 beats me .

[roboticmehdi]

Today, after 3 hours i have strength final examination. he will defenetely be asking mohrs circle, you are my savior, thank you !! :D

[nunoV12]

Thank you from Portugal :D

[teflonboy12321]

Brilliant video! This was immensely helpful.

[mostafakazi]

Thanks .. Very helpful video

[CARFLANFLA]

este video en español seria muy bueno.......prolomenos con subtitulos.

[bergenstation]

Thank you very much!

[omogaju]

I can't believe I understand this...I never understood it during my undergrad and it hunted me. Now I am in a master's program and I I really need to study it...you just made my day.

[periodbludbruvas]

1. You are an amazing teacher

2. You make the indian lecturers on youtube look like common sex offenders

[dontgiveafluck]

Thank you for this video, really helped me to understand Mohr's circle. Have showed it to some of my classmates as well.

(Mechanical engineering in Ireland)

[juannito25]

muchas gracias:D

[hughcp]

Thanks, to you I've now understood what several weeks worth of lectures failed on, and am hoping your other videos on the channel cover some of the other topics I'm doing (haven't looked yet)

A Mechancial engineering undergraduate in the UK

[Mrzw19]

I subbed, very helpful videos on statics and deforms. 

[altontowers1]

Dear PurdueMet,

Thank you very much for your very helpful video, Just a quick question, Shouldn't the axis for the shear stress be other way around, down being positive??

Regards

[arrogantB]

Thanks so much for the video! I haven't checked out the others but I will definitely do so in the future. I'm a ME major and a fellow student recommended this to me. Cheers from Alaska!

[BlackRockMac]

G'day m8...You saved me a few months back on a statics and dynamics test, and u've gone a long way to helpin me with this Strengths of Materials test i got comin up, once again thanks from the land down under...U r a legend

[0508gabriel]

Muchas gracias por el aporte , saludos desde Perú

[juanfe9210]

@purdueMET I'm a student of Civil Engineering and this video help me a lot!! to understand the concept of the mohr circle. Thanks

Regards from Colombia

[MsMechengineer]

Very helpful, thanks for taking the time to do this!

[purdueMET]

@MsMechengineer I'm glad the video helped. There are dozens of others as well on this channel. Where are you?

[Efhiya]

Yes. And actually I'm a student from Maldives studying in Turkey. :)) The world is small. Cheers! Keep it up Sir!

[Efhiya]

My lecturer really failed to simply it as much as you did here and now I've no doubts..

I like the videos about strength of materials, din't check others.

[purdueMET]

@Efhiya Wonderful. If you like these videos, please tell your friends. I really like the thought that I'm helping teach students in Turkey :-)

[SHOPAH0LIC]

@purdueMET Not only Turkey, but Kuwait too!

[purdueMET]

@Mikey13780 I'm glad the video helped. How did you find it?

[Efhiya]

Thank you this is really helpful..From Turkey

[purdueMET]

@Efhiya Wonderful. How did you find this video?

[agfsp1]

Excellent explanation on how to plot Mohr's circle. However, just like my first introduction to Mohr's Circle (20+ years ago), It lacks an example of a practical application to bring this into the real world. I'm a structural engineer and I deal with members in axial (normal), shear, and bending stress (also normal) all day long, I would love to see an example that ties Mohr's Circle and it's implications into an everyday design problem.

[zsj45]

Spanish subtitles please

[Toaster361]

Excellent videos! I'm taking a course where I need to know this. Yet I took Mechanics of Materials over two years ago. In barely 20 minutes I learned this again. Thank you so much.

[chutterdude14]

what if you want the x face to see sigma max? would the angle be 180deg - 2phi?

[chutterdude14]

thanks so much

[MrArdah]

thank you .....

[farshadguitar]

thumbs up if you believe this guy deserves the noble prize !

[purdueMET]

Hi Folks, I'm very glad this video is helping you study and I most appreciate your thanks.

RMF

[gcass02]

@purdueMET

Very helpful series of videos on Mohr's Circles.

Currently in Statics class and it would be much more difficult without your videos.

Your are probably busy with research, but Is it possible you could do a video on

Mohr's Circle for strain

and/or

The Elastic Curve/Beam Design

Thanks

Go Blue!

[ryanevius]

@purdueMET Great explanation. A tough thing I've also noticed people having is being able to tell whether or not a shear (tau xy or tau yx) is positive or negative if the sign is not given.

[arunaraj01]

thank u sir.............

[arunaraj01]

tahnks alot sir...

[maximus318i]

thanks allot sir your away better than our chairman ......... :)

[Hatimoooo]

Thanks a lot Sir !

I really hoped u were in my university !

Thanks again

[sxymichael4u3030]

Yes sir. A 3D would be nice. I appreciate you taking the time to get back to me. However, I understand your busy and may not have the time since you have other classes you are attending too.

[sxymichael4u3030]

Professor, your videos have really helped... A LOT. Is there any way you can do one dealing with pricipal stress in the x,y,and(z) directions, along with Txy. Most problems I do have only sigma x,y and Txy. I would be very grateful.

Thank You

[sxymichael4u3030]

Hey you videos have really helped A LOT. Is there any way you can do one dealing with pricipal stress in the x,y,and(z) directions, along with Txy. Most problems I do have only sigma x,y and Txy. I would be very grateful.

Thank You

[purdueMET]

@sxymichael4u3030  I'm glad the videos have helped. I'm not sure if I will get time to do a 3D problem (not teaching strength of materials this semester). However, several people have asked. I probably should do one.

[jfkljdflklskad]

why did the angle equal 2 phi?

is the equation 2 phi + 2 phi prime = 90 a rule?

how are phi and phi prime related.

and for the shear stress, is clock wise induced rotation positive, and counterclockwise induced rotation negative?

[imaginaruis]

Very nicely explained and very relaxing for the viewer. Really a pleasure to watch! Thank you very much!

[VANASUTRA]

Thanks a Million on the video. Very clearly explained my 7 pages of hell in a simple manner.

Regards,

Aeronautical and Aerospace Tech Singapore

Kanesh

[VANASUTRA]

Thanks a Million on the video. Very clearly explained my 7 pages of hell in a simple manner.

Regards,

Aeronautical and Aerospace Tech Singapore

Kanesh

[jackysew]

I'm totally appreciate it! Just a question, my lecturer thought us the y-axis arrow (shear stress) pointing downwards. Is it wrong for me if i use upwards like u?

[s2174031]

Thankyou for your video contribution , its amazing how a short video explained clearly can provides the core understanding of a topic that overstated textbooks and fancy notation fail to do.

Regard civil eng undergraduate from Australia

[purdueMET]

@s2174031 You're most welcome.  I'm glad the videos are doing the job for you (mate).

[qh25]

You should make a video on 3D Mohr's Circle... Great vids...

[trueskill425]

I'm taking a summer crash course in Mechanics of Materials at the University of South Alabama. You're videos on the Mohr circle are clear and precise. I'm positive I'm going to ace the quize tommorow thanks to you :-)

[purdueMET]

@trueskill425 I hope your quiz went well.

[crazyman12346]

@trueskill425 did u fail the test or what

[trueskill425]

@crazyman12346 I did great

[crazyman12346]

@trueskill425

[purdueMET]

There are too many comments for me to respond to all of them. I'm glad you are all findng the videos helpful.  I'm planning more videos during this summer.

[lilcrazyfuzzy]

@purdueMET Thanks for your engagement, as an engineering student in germany, i found your video helpful to refresh my memory (an certainly more appealing than digging the info in books)

Thanks

[purdueMET]

@lilcrazyfuzzy I'm glad the video helps. Good luck with your studies.

[hiney1]

awesome. helped me heaps thanx!

[bhol056]

You the man! So simple, clarified everything... good to know there are at least some good lecturers out there.

[tyfa3]

Thanks so much !

[djspincycle]

Perfectly paced explanation. Its so easy now that I can even explain it to my class mates! (though I still direct them to your video!! ) Great job!!

[purdueMET]

@djspincycle I'm glad the videos help. Thanks for directing your friends to the videos. Sounds like you asre finding out that you learn a lot about a subject by trying to explain it to others. Well done young Jedi ;-)

[purdueMET]

You're welcome. I'm glad the video helped.

[indoscythian]

thanx a lot sir

no more fear of mohr's circle lol

[purdueMET]

@addernoir01 You have it right. Remember that the angle on Mohr's circle is twice the angle you have to rotate in real life. Mohr's circle is drawn using stress axes rather than geometrix axes.

[sjacques64]

life saver!!! also have an exam monday lmao

[purdueMET]

@sjacques64 Best of luck to you.

[sjacques64]

@purdueMET thanks. I wish teachers would suggest youtube as a way of learning. I only found out about this through a friend. very helpfull though.

[purdueMET]

@sjacques64 Thanks. If you like the videos, tell your friends.

[sakkarugzo]

Great video. Very clear and straight forward. Thanks a lot.

[purdueMET]

@sakkarugzo You're most welcome. More videos in the works.

[arthurstraizhys]

thanks a million - that is make sense for me just and leave no questions about mohr's circle!

and more - this is first time when I found it is interesting in solving stress transformations problems!:)

[purdueMET]

@arthurstraizhys Excellent. I'm glad the video helped you.

[1timbob]

Thanks alot, thats really cleared it up for me, exam monday!!

[purdueMET]

@1timbob Good luck on the exam!

[SaSheTToS]

thank u very much!!!

[purdueMET]

@SaSheTToS You are most welcome. I'm glad the videos are helping you.

[rsimzer]

Thank you very much!

While my instructor did a great job at explaining this concept in our lecture, I didn't seem to fully understand the concept; this video has helped me understand (and helped me understand how to apply it for my test coming up).

Cheers,

BCIT, Canada

[purdueMET]

@rsimzer Super. I like the idea of people being able to augment a good classroom lecture with my videos.

[ena875]

Thank you sooooo much!! This helped a lot, exams in 3 weeks! Liverpool University...

[purdueMET]

@ena875 You're welcome. Best of luck with your exams.

[chuffinawker]

Got to say a massive thank you for these videos, fantastic explanations, they've saved me for my 3rd year structural geology course! (University of Glasgow, Scotland)

[purdueMET]

@chuffinawker Extremely cool. Glad they helped.

[bbarbe5]

Your video's are extremely helpful! I was wondering if you could post an eccentric axial loading problem?

THANKS

[wrenthereaper]

this saved me for my machine design final. i was soooo rusty on Mohr's circle! (University of Portland)

[purdueMET]

@wrenthereaper Glad it helped!

[Dickman000]

Can you please move to Australia and be our lecturer :) So much more straight forward. Keep up the good work

[purdueMET]

@Dickman000 Well Mate, it's a bit of a commute. Actually, if I could find a gig there, I'd be tempted.

[marenggaze]

i really appreciate these videos. i find it easy to learn from your teaching, i really hope you continue your work. on my internet search for videos about these problems, this is the best i've found so far.

[purdueMET]

@marenggaze I most appreciate you taking time comment. Definitely more videos on the way.

[jose6914]

Thank You! (Colorado School of Mines)

[purdueMET]

@jose6914 You're most welcome. I hope the videos help.

RMF

[jose6914]

THANKS! (Colorado School of Mines!)

[darko411]

also a 3rd year mech eng student from Australia (Monash, woo!)

your lectures are straightforward and easy to follow, cheers dude.

[purdueMET]

@darko411 Thanks for the encouragement. I'm glad the videos help.

[purdueMET]

@darko411 Thanks much.  Cool to hear from someone in Melbourne!

[ssnhm]

Great Stuff. I am a undergraduate in Mech Engg from India and right now trying to get Engineering licesnse in Canada. To get my license i need to pass exams and on eof them is SOM. your video has helped me to absorb Mohrs circle concept in 15 minutes. Your video was more helpful for me than the text book. Thanks a lot and please keep up the good work.

[purdueMET]

@ssnhm Goo luck with your exams. I'm glad the videos helped. I am planning more.

[bryanmadtha]

thanks a lot for da video on mohr circle.helped a lot!!!

[clintz967]

i myself am from australia, im actually in 3rd year engineering. However my question is very different to the one you've evaluated. I am supposed to draw mohr's circle, determine all stresses on an element, find principal stresses AFTER the element has been rotated 30 degrees clockwise. Its very confusing lol

[clintz967]

Hello sir,

Just wondering if you could make a video about mohr's circle with a rotation? Im meant to be doing this question but with a 30 degree counter clockwise rotation, and Im asked to find principal stresses and "stresses on an element".. and im really clueless. Please help?

[purdueMET]

No problem. I just did a video showing how to calculate rotation angles and principle stresses. I hope it helps.

Where are writing from?

[coryddollanganger]

this video helped me to remember the mohr circle for my FE exam! thanks a lot.

[rkhkkk]

thnx mate..... Its really understanding....

[purdueMET]

I'm glad it helps. Where are you?

[rkhkkk]

Well... Im Rameez a civil engg student and m doing a case study on mohr's circle... Im from pakistan....

[rkhkkk]

If u dnt mind can i have ur yahoo ID ?

[DAWMPHF]

finally I understand the Mohr's cirlce, thanks so much, it's really helpful.

Saudi Arabia

[purdueMET]

You're most welcome. I'm glad the video was helpful to you. There will be more videos this semester.

[j2460howard]

can you show an example where you have to draw 3 circles to determine max Txy, P1,P2, Pz

[jeovi07]

This video really really helped me, specially 'cause you used stresses with differents signs than the ones you used in the first video... I guess my professor should see this...

Really, you made a good explanation, thanks!!

[clouduos]

thanks alot my exam is about to start now ^^ hope ill pass

thanks alot ^^

[purdueMET]

Good Luck!

[bunt011]

thanx a lot!!! that was very helpfull...if u cud also explain bending moment, shear stress n torsion, bending of beams....i know its to much :P:P:P i will pass my exam!!!

[osse0005]

Thank you, this was very helpful

[Cryyl0]

Thank you, this was very usefull!

Greeting from Argentina :)

[purdueMET]

You are most welcome. I'm glad it helps you.

I'll be posting more, so check back occasionally.

Is there a topic you would like to see?

RMF