@@Nick-gj9my High stress triaxiality is known to influence void growth and nucleation leading to ductile failure. These, I would say, are advanced topics. My focus would be to emphasize on the fundamentals of solid mechanics
Hi, could you please elaborate more on differences between flow and hardening rule? I'm confused by the fact that hardening laws (power, voce, etc.) describe flow stress curves of true stress vs eff plastic strain, but doesnt that sound like flow rule? So in the context of yield surface, if hardening rule expands/contracts/displaces a yield surface, what does flow rule do? Thanks a bunch!
Let me explain my thoughts : As you said hardening law signifies the change of the yield "locus" with loading, Physically it represents the evolution of the yield strength ( material hardens or softens), which is a property of the material. The yield locus just states if the material is elastically loaded or plasticity loaded, it does not give the magnitude of plastic strain.Flow rule does that ! Flow rule, gives a relation to find the magnitude of the plastic strain given the " applied stress" (There is an assumed condition of normality). Say, if you are in elastic loading regime, you have a plastic strain of Zero. And, Yes, it is very confusing. Both are closely tied to each other. Keep thinking about it...
Very good video. I have a couple of doubts. 1. Does the initial yield means upper yield limit? 2. The second doubt is what is the actual starting point of elasto plastic region- Elastic limit or yield?
Thanks Subhash. 1. Initial yield is the point beyond the elastic limit where the material first starts yielding. Only few materials like mild steel have an upper and lower yield point which is due to interstitial atom- dislocation interactions, others have only one initial yield. 2. Either, Elastic limit & yield are one and the same.
Sir, what is the value of yield strength and tangent modulus for Aluminium 2024-T351 under Bilinear isotropic hardening in plasticity can you please help me
Dear Prithivi, honestly such an excellent video. Could you please refers me more descriptive reading material on plasticity as simple as you've explained. Or any notes etc. Thanks and any email ID to contact you? Regards
You can look at the following resources : 1) Continuum mechanics and plasticity by Han-Chin Wu 2) Introduction to Computational Plasticity by FPE Dunne 3) ruclips.net/video/XO4FdwEwjG0/видео.html
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Here is a video on Isotropic and Kinematic hardening ( Bauschinger's effect) : ruclips.net/video/_fzj3mu8Xec/видео.html
can you provide some details about the stress traxiality and strain rate effect on material failure
@@Nick-gj9my High stress triaxiality is known to influence void growth and nucleation leading to ductile failure.
These, I would say, are advanced topics. My focus would be to emphasize on the fundamentals of solid mechanics
@@solidmechanicsclassroom3224 OK..it would be helpful if you make some video on that topic...as your way of explanation is very good
Dude, it was a very helpful video! You start with WHY and explain with well organized structure and order. Thank you very much!
Good description, but you missed the consistency condition
Finally ... This video unlocked my brain to accept the real concept.... Thanks bro..
6 minutes is equivalent to lifelong understanding of Plasticity .! Great work sir
Thank you :)
Thank you so much for this video.
I used to wonder what plastic strains cause in a material, now I understand it.
Just Awesome
wonderful coverage and simple explanation. Thank you so much
Extremely helpful video. Thank you very much.
Thank you so much for your video.
Sir, your presentation is very good! I am waiting for detail explanation about Flow Rule.
Very nicely explained sir thanks a lot
This is great content! Thanks.
Nice video. It is very helpful. Keep posting such new videos. Thank You.
very helpful
Helpfull video
Can you explain the behaviour of Stress-strain curve for the plastic materials
Amazing video, thanks so much!!
Great work Prithivi!
Great lesson
Excellent Work
very nice video. thank you
my lord -excellent lecture--please suggest a book --simple book available in market --thank u my lord
Great explanation, thank you
thank you for the wonderful video bro
Hi, could you please elaborate more on differences between flow and hardening rule? I'm confused by the fact that hardening laws (power, voce, etc.) describe flow stress curves of true stress vs eff plastic strain, but doesnt that sound like flow rule? So in the context of yield surface, if hardening rule expands/contracts/displaces a yield surface, what does flow rule do? Thanks a bunch!
Let me explain my thoughts :
As you said hardening law signifies the change of the yield "locus" with loading, Physically it represents the evolution of the yield strength ( material hardens or softens), which is a property of the material. The yield locus just states if the material is elastically loaded or plasticity loaded, it does not give the magnitude of plastic strain.Flow rule does that !
Flow rule, gives a relation to find the magnitude of the plastic strain given the " applied stress" (There is an assumed condition of normality). Say, if you are in elastic loading regime, you have a plastic strain of Zero.
And, Yes, it is very confusing. Both are closely tied to each other. Keep thinking about it...
Very good video. I have a couple of doubts.
1. Does the initial yield means upper yield limit?
2. The second doubt is what is the actual starting point of elasto plastic region- Elastic limit or yield?
Thanks Subhash.
1. Initial yield is the point beyond the elastic limit where the material first starts yielding. Only few materials like mild steel have an upper and lower yield point which is due to interstitial atom- dislocation interactions, others have only one initial yield.
2. Either, Elastic limit & yield are one and the same.
Hi, Thank You for the explanation.
Can you please explain the Von-Mises curve?
Please check this link : ruclips.net/video/AAUBV50hiv4/видео.html
Thank you sir!
Thank you, sir!
Superb!
Show how does the UTS vary with plastic strain?
It doesn't
UTS is a property and is fixed for a material
Sir, what is the value of yield strength and tangent modulus for Aluminium 2024-T351 under Bilinear isotropic hardening in plasticity can you please help me
Helping video thanks
Very well done!
Thanks very much Professor !
brilliant !!
fatigue failure is in brittle mode even though material is ductile...
Respected Sir, I want to write material matrix for hardening isotropic material, please suggest any useful information for that... thank you so much
Dear Prithivi, honestly such an excellent video. Could you please refers me more descriptive reading material on plasticity as simple as you've explained. Or any notes etc. Thanks and any email ID to contact you? Regards
You can look at the following resources :
1) Continuum mechanics and plasticity by Han-Chin Wu
2) Introduction to Computational Plasticity by FPE Dunne
3) ruclips.net/video/XO4FdwEwjG0/видео.html
hello. In druger pracker yield criterion, can we assume internal friction angle is equal to dilatation angle? what is dilattion angle?
I wish I had known pressure dependent plasticity to answer your question but I don't :(
Thanks a lot Sir
Could you inform me of any real-life applications for deformation of a thin plate/membrane and/or linear elasticity
this is so confusing, i want lecturers to teach like students are 7 years old thanks
i'm in the wrong place 0,0