How to get STRESS-STRAIN curve in ABAQUS using 3 Approaches

ABAQUS Tips and Tricks Series: This video shows detailed steps in generating stress-strain curves in ABAQUS using three approaches. These approaches are: (1) Localized approach (2) Volume-averaged approach and (3) Experimental equivalence approach.

The process is demonstrated using a dogbone specimen subjected to a tensile deformation, with a polypropylene material. The pros and cons of each approach are discussed and recommendations made on how best to compare experimental stress-strain data with numerical predictions.
#cmvideos #abaqustutorial #rve #stressstraincurve #pbcgen2D #montcarlgen2D #AbaqusTipsAndTricks

Time stamps
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You can quickly navigate through the videos using these chapters.

00:00 Intro
00:40 ABAQUS Setup of Tesnile specimen case study
01:40 Approach 1: Localized stress-strain plot
06:32 Approach 2: Volume-averaged stress-strain plot
10:32 Approach 3: Experimental equivalence stress-strain plot
13:57 Analysis of experimental equivalence approach simulation results
17:36 Comparison of stress-strain plots from the 3 approaches
19:26 Outro

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[MichaelOkereke]

Time stamps

You can quickly navigate through the videos using these chapters.

00:00 Intro
00:40 ABAQUS Setup of Tesnile specimen case study
01:40 Approach 1: Localized stress-strain plot
06:32 Approach 2: Volume-averaged stress-strain plot
10:32 Approach 3: Experimental equivalence stress-strain plot
13:57 Analysis of experimental equivalence approach simulation results
17:36 Comparison of stress-strain plots from the 3 approaches
19:26 Outro

[yunsongguo]

This is by far the best video I've seen on the stress-strain acquisition. It is very detailed, scientific, and systematic well-made

[志阳倪]

Great job! Thank you so much! Looking forward to seeing more wonderful works from you!

[HeidiQuintero-fo]

great job! best video I've ever seen about stress strain. Thank so much!

[ManishKumar-pepe]

Wonderful Explanation Sir, Thank you so much🙏

[ravindrasinghchahar]

Wonderful tutorial Prof. It is very useful for my research. Thank you so much

[nithurshanmylvaganam]

Great work! your videos are beneficial for my research work. Kind request you to post more.

[ihtishamkhan]

Your way of teaching is superb sir, i salute you from my core of heart. secondly, i wish if you got some time to record some videos related to crack propagation by using xfem and residual stress effects in crack propagations.

[HemantKumar-ycfk]

Your explanations regarding the tensile simulation are excellent. Could you please provide me with information regarding the strain rate or cross-speed utilized in the simulation?

[chidieberejames]

wonderful video Dr, pls can u make videos on thermal analysis of concrete under fire with stress and strain data extracted

[asdfghieow]

Great job Dr. Okereke! If I want to plot Force-displacement curve of a crimping stent test to compare it with the real experiment, would it change something with respect to the third approach you described? Because I am struggling to do it. Thanks in advance!

[nomis]

Hello Dr. Okereke, I am simulating a tensile test of CFRP using a shell element. In my first approach, I fixed one end and applied shell edge load on the other but I ran into a convergence issue. Because of that in my second approach, I applied shell edge load on both ends. I created history o/p and requested RF over the nodes on the two end edges but I got zero reaction forces although the Sim. ran successfully. Can you please advise me to follow the right approach? I also want to plot a Force vs Displ. curve
Best wishes

[muhamadfarahmand]

Dr first i want to send my regards for your comprehensive explanations and second i have a question.
How can i extract the stress on a surface middle of the model or RVE. To be exact think of a surface that is cutting the RVE or model into two parts now we want the average stress in this surface. Please help

[domingochangk]

That great work video really, would you how to create anchor, deviator with a saddle-shape on T-beams?

[dlwldmsdlwldma]

When simulating a simple tensile test in Abaqus, why does necking occur in an off-center location rather than at the center? The boundary conditions are symmetric, but no matter how I modify the setup, the necking phenomenon always appears to be biased toward one side.

[mariogalindoq]

Maybe you could compute the true stress - true strain curve from the experimental results. I think this new curve will fit very good with the others. Thank you. Nice video.

[AnuragGupta-opuz]

Very nice way of explaining the concept sir. Sir, can we extract directly the stress strain plot from the reference point without first extracting force displacement plot from the history output as explained in 3rd experimental equivalence approach? Also, is the first two plots are true stress strain plots and the last one approach( experimental equiavence) is engineering stress strain plot?

[MultiSaded]

Thank you for your explanation, I tried to draw the stress-strain curve of a representative volume element RVE in the elastoplastic state with the Comsol software, but I did not succeed, because this software is very different from the Abaqus software.

[eslingenastugart]

Great tutorial! I am wondering if you can share the Abaqus model to replicate yours.

[joshnyimakpo]

Hi Michael, Thank you for these brilliant work. I realised that in your experimental equivalence approach, when you combine the RF1/120 and U1/(30*10), your plot still comes out as Force vs Displacement. You didn't convert that to Stress vs Strain before combining them with the Localised and Volume Averaged Stress - Strain Plots. Is there any particular reason you didn't convert the Force vs Displacement for the ExptEquiv plot?