Johnson Cook Damage Parameters
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- Опубліковано 24 січ 2025
- I have shown the calculation and need of the Johnson-Cook (JC) damage material model. And also explained through Excel sheet.
The source code for calculating the D1, D2, D3 damage parameters is available in following Git-Hub repository link.
github.com/abh...
References:
Wuertemberger, L. and Palazotto, A.N., 2016. Evaluation of flow and failure properties of treated 4130 steel. Journal of Dynamic Behavior of Materials, 2(2), pp.207-222.
Wang, J., Guo, W., Guo, J., Wang, Z. and Lu, S., 2016. The effects of stress triaxiality, temperature and strain rate on the fracture characteristics of a nickel-base superalloy. Journal of Materials Engineering and Performance, 25(5), pp.2043-2052.
Murugesan, M. and Jung, D.W., 2019. Johnson Cook material and failure model parameters estimation of AISI-1045 medium carbon steel for metal forming applications. Materials, 12(4), p.609.
Thank you, ma'am！ this is the best explanation I have ever watched about how to calculate material parameters from test data. I anticipate more of your videos about similar topics. thank you lot!
Thank you so much
@@scienceandtechnologybygaya3535 hi ma'am, I have a little question here after I watched the video: how to choose the reference parameters, such as reference temperature, reference strain rate?
Why we are multiplying all the terms in j c model.
Because it shows coupled effect.
@scienceandtechnologybygaya3535 Thanks 🙏
thanks for your detailed explanation
Thank you for your clear explanation...
Thank you so much
Thanks for giving valuable concepts
Thank you
It's great. Thank you very much.
Thank you
what should be the value of n for concave upward curve
Thank you for watching my video. For that you have to go in mathematics and check how the graph will be looking by changing the power. You can also check through excel by putting trendline.
Very nice explanation.
Glad you liked it
Yes madam. I an seriously thinking of including this in my mechanics of structural impact course.
Very useful information tq for sharing👍👍
Thank you so much
Please help me to model HJC in abaqus with parameter
Do you have parameters
Yes i have
@@KCloudEduKIENTHUCTONGHOP then I can tell you, how to do analysis in Abaqus
That explained really well ma'am. Can you please make a video on how to write the Matlab code for the damage model to find the effective fracture strain, if possible?
very good explanantion!
Thank you
please
make videos on how to write the UMAT codes for this type of models
I need your help. In optimization of johnshon cook model
.. If please can you help Me
Please Check discription, I have uploaded code for optimization which I used.
Could you make a video about the Cowper Symond model for dynamic analysis?
ua-cam.com/video/hue0xLuq0i4/v-deo.html
ua-cam.com/video/hue0xLuq0i4/v-deo.html
Super explanation Madam
Thank you so much
very usefull. i have a question if we need to use for example use cowper-symonds or some strength model like jc model, Is there a book to help us how to find parameter for that strength model?
Thank you very much. I have also used cowper-symonds material model for cross check the analysis. Mostly I have preferred only papers. I can ask to my senior about books and I will let you know.
@@scienceandtechnologybygaya3535 thanks
Ma'am, can I implement the same for compression samples? I am having data for samples tested under compression
Thank you for watching my video. Yes, you can implement for compression samples.
Hello, Mam. I have a reinforcing steel stress-strain relationship that is temperature-dependent. with this data, can I make a Johnson Cook damage model?
Thank you very much for watching my video. Sorry for late reply. what Johnson cook material model explained in the video, is used for only ductile material. And you are asking for ductile and brittle both. Reinforcing steel means, using steel rod for strengthening the concrete. You have to use Holmquist-Johnson-Cook constitutive model.
Good explanation. can u please explain about Concrete Damage Plasticity model also? Thank you.
Thank you for watching my video. I will try to make the video for same.
Mam, can you make a video on how the initial stress strain values should take for Johnson cook model
I have explained it. There are five JC parameters A, B, n, C, m. A, B, n can find from Quasi static process. You get Stress strain value for Quasi static process through tensile test by using Universal tensile Machine.
hello,madam,i'm doing the turning simulation based on ABAQUS recently. In the simulation process, i need to use J-C damage model.The material is titanium alloy TC11.I have read the relevant papers,but there is no J-C damage parameter. Moreover, i have a week knowledge of materials. Can you help me find the J-C damage parameters of TC11?be deeply grateful.
You can search through the papers only. And also you should check that strain rate requirements in your work should match with the paper. then only you can use the JC parameters of the paper.
@@scienceandtechnologybygaya3535 Thank you,madam. I'll think about it again.
Great video! Thank you madam! I would like to ask if it is possible for madam to create a video on Drucker Prager model parameters? Thank you very much.
I will try the same.
Thank you so much
Hi Mam….. can you please create a video on extended drucker prager model parameters..thanks
Wanted to know how to Fit the curve for D1 D2 AND D3
I have given a link in description box. You can use that. If not able to fit by using that algorithm. Please let me know.
Can you send Johnson cook assisted XL file. It is useful to change the value fo beginners
It is not allowed to me to send the file. If you are having any data please share with me, I can show how to calculate these parameters. Thank you
Give your mail id
I don't know about how to install Jupyter notebook and I can't find my D1 D2, D3 . Can you help me
@@scienceandtechnologybygaya3535 Thank you. Can you send your mail id and youtube link for derivation of principle plane equation
I've been waiting for long time to preform my thesis about FEA. Thank you so much. I'd like to inquire you, If I have only tensile test raw data. Can I calculate D1,D2,D3?
Hi, Will you please give more detail about tensile test data? Have you done the experiments for notched and un notched specimens both and have failure strain for all specimens. Then you can calculate the triaxiality factor for each specimen and make a graph between Triaxiality stress factor vs corresponding failure strain. If you are having this data points then Yes, You can find the parameters D1, D2, D3. I have given a link of source code for finding D1, D2, D3 parameters after putting above data point. This source code is available in Git-Hub Repository. And thank you for asking the questions.
@@scienceandtechnologybygaya3535 Right now I'm studying all information about JC-Model. 1.JC material model>> Understanding from your explanation. 2.JC damage model - Not clearly about the specimens prepare notched or unnotched(Standard?). How many specimens I have to perform? I'm conducting the experiments(A356 T6 aluminum alloy ) to correspond with AstmE8/E8M(Specimens). If you don't mind, I'd like to send an email to you for inquire further information.
Yes sure, I have already given you my email id. You can mail me.
My email id is gayatri.uiet@gmail.com
Would you like to collaborate?
Which type of collaboration?