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Maximum Principal Stress Theory - Theories of Elastic Failure - Strength of Materials
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- เผยแพร่เมื่อ 4 ส.ค. 2016
- Subject - Strength of Materials
Video Name - Maximum Principal Stress Theory
Chapter - Theories of Elastic Failure
Faculty - Prof. Zafar Shaikh
Watch the video lecture on Topic Maximum Principal Stress Theory of Subject Strength of Materials by Professor Zafar Shaikh. Watch the Complete lecture on Engineering Academics with Ekeeda.
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Your app is shit
please rectify the yield stress is not what you said in the video.
Sir for ductile material you've consider ultimate stress as yield stress plss... Explain...
I'm sure not many people notice it, but there's a ton of editing done here. Impressive
when we hear from headphone,there is always one side of headphone is not working in your videos......please try to fix it.
yes
No bro both are working in this vdo ..
i think u are confused with the yield stress .u said for ductile material failure point is ultimate stress .
Nice video but i think max value of stress to be considered for ductile material is the UTS not the yield point(in the video it seems UTS is confused with yield point.Yield point comes below the UTS in stress-strain curve.) and the max value of stress to be considered for brittle material is the yield point.(as it breaks soon after the yield point.)
depend on your application
You are absolutely right
Sir,I was also thinking the same,but yield stress point from "Ductile graph" is not shown in this video,see the curve from A to B,yield stress point(upper yield stress point) is at the highest ordinate(Y axis) on that curve (curve from A to B),the equation is right,yes,we consider" yield point","AFTER YIELD POINT ON STRESS STRAIN CURVE PLASTIC REGION STARTS"suppose a ceiling fan designer designs a shaft of fan,he doesn't want the shaft to even expand linearly,he practically designs it so that the "shaft remains in elastic region",imagine what would happen if he designs considering "point D""Breaking stress point",will anyone purchase a fan whose shaft expands,isn't it risky for a person who sleeps in that room,i hope its crystal clear now
@@shraddhapatil7466 yes thank you Shraddha
@@ammarelsheikh5335 no ! Yielding point is taken in most design. You don't want material to deform in plastic limit where it doesn't regain its shape
More importantly this theory can not be used for a Ductile Material, because for a Ductile material the failure criteria is Yielding not UTS and in ductile materials failure can also occur due to shear, but this theory does not say anything about the Shear stress, so It CAN NOT be used for Ductile material
Go to school and teach pupils. 7 min of failure of my life
finally a video that is not in hindi
I am not doing any tuitions just because of u sir....Thank youuu so much
Explanation is very nice sir
yield stress is taken as failure criteria for ductile materials..and max stress and yield stress are along different points in stress strain diagram
Good presentation
Thanks for your videos, am following up. I want to design a machine.
sir thank you for your explanation
I like your videos
they are very useful
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sir please solve the queries of those below viewers for better understood of new viewers.
Little confusing, Point A is the proportional limit, just above Point A before Point B is the yield stress, and point D is the ultimate stress or more commonly known as ultimate tensile stress. However, in this video he keeps calling the ultimate tensile stress the yield stress and it is wrong. My machine Design book by Norton, even states that it is Sut which stands for Sigma Ultimate Tensile. This guy needs to stop calling it yield as he does in all his videos
Nice explanation sir tq so much
sir,why we taked about shear at the end of the lecture and in this thory case is only about compression and tension.then why we used shear for applicability of material ahich is ductile and brittle?
U r telling that uts as yield strength
Sir maximum stress is not yield stress in ductile material. That is sir mistake in basics. If material is beyond stress stain proportionality limit it is at its yield strength.
Those who liked, not have idea about stress strain curve. Yield point he is talking wrong
Nice sirji
is it so simple? why i didnt see mohr circle with ur analysis? is it enough to just consider the stress in one dimension?
thank u sir
Here failure means permanent deformation not breaking.
I think u r confused
nice. presentation
Nice information sir ty...but maximum stress should be ultimate stress not yield stress I think so. ..btw because u of interest in som is generated inside me
Thank you Rohit . You can give us review on Google .
@@Ekeeda okay how can I give it sir?
Click here - m.facebook.com/Ekeeda/reviews/?ref=page_internal&mt_nav=0#_=_
@@Ekeeda done sir
Thanks Rohit
Sir... This video is soundless infact your some videos have no sound and I could not learn from this ... plz try to solve this issue 🙏
NICE SIR
this is a nyc videoo loved it..
Sumeet Anbhavane Thank You. Stay tuned with ekeeda channel for more videos.
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Nice
A sir small error you swapped yield and ultimate stress.
Sir maximum principal of strain theory Bta do. I requested sir
Sir please upload the numerical problem of maximum shear stress theory
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Your teaching medhod toooooo good that's great I like too much your teaching style
sir upload some numerical problem
In simple testing machine permanent deformation consider as failure of material so yield point consider as maximum stress
So you are wrong Sr
Sound issue
No sound :(
🙏 please sir
My right ear felt alone...
Bakwaaas , you are pointing max stress as yield stress at the end 😂, you are very good example for students how to score marks and make disasters when it comes to real environment, please do delete the Video
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hindi me lecture banaya karo
Wrong information