Great !! Tutorial on Modeling of XFEM fatigue crack propagation in ABAQUS using Direct Cyclic approach

Thank you for sharing this video Faisal! Much appreciated for the explanation of the steps and why we should do it, not just uploading a video. Subscribed! and looking forward to see more videos from you :)

@FaisalQayyum

3 жыл бұрын

Thank you very much for the appreciation :)

hi thanks for the video. I would like to konw how to set the amp-for pin in the edit boundary concidtion part ?

Very helpful video

Is there any way to track the forward displacement of the crack tip?

Nice video

How can i determine the rate of crack growth as a function of time or load?

thank you for your video. i have a question, what is the amp-for pin??(at the boundary condition)

@FaisalQayyum

5 ай бұрын

I think it was just defines but not actually used in the simulation

I am working on mixed mode fracture in concrete using XFEM method. For that the crack would propagate at some angle not straight like in your case, and that is because the fracture energies are different for different modes and hence their contribution vary as the crack propagates with time. I am curious about the fact that how one would know which region and to what extend one has to select to make sure that the crack propagate in that region. I mean how you new that you crack will propagate along that straight line, it could have, practically, gone anywhere in that plate.

@MegaMirza75

Жыл бұрын

do you have the answer for this? Cuz im also curious 😆

Hi, Thanks for the video. Have you ever tried to modify the keywords to apply the direct cyclic by defining c1,c2,c3 and c4?

@FaisalQayyum

3 жыл бұрын

Not yet

@ShubhamMishra-ed7mb

Жыл бұрын

Hi Esra, were you able to define it?

thank you for the video.please share us rolling contact fatigue analysis on train wheel- rail using abaqus

@FaisalQayyum

3 жыл бұрын

Have not simulated that before. It is tricky problem as the strain accumulates in the material over time due to rolling contact fatigue and results in material hardening and eventual failure.

Great!

@FaisalQayyum

3 жыл бұрын

Thank you :)

Great

@FaisalQayyum

3 жыл бұрын

Thank you

great Video! but how to deal with these outputs? Furthermore, does direct cycling not define crack growth criteria?thanks a lot

@FaisalQayyum

2 жыл бұрын

How to deal with what outputs? No, there is no crack growth criterion in direct cycling step

How to find fracture energy..?

Hi, for some reason I cannot see the crack growth when my model. Can you share the file?

Sir, what is the mesh and element type used? For me it gives the error that "output strain request is not available for selected element type"

@FaisalQayyum

8 ай бұрын

I am not sure why are you encountering that error. You can send me an email at fysalqayyum@yahoo.com and I can send you the files for deeper analysis

Hi Faisal, Where do I get the properties for Ti64 material?

@FaisalQayyum

7 күн бұрын

Not sure, maybe from a research paper

Hi, can you please tell what is the amplitude for pin for this video

@FaisalQayyum

3 жыл бұрын

Which pin ?

I need your help in my research work and My research topic is Fatigue behaviour of stud shear connectors in steel concrete composite beams

@FaisalQayyum

6 ай бұрын

I can provide paid consultancy, please contact me at fysalqayyum@yahoo.com

Would you like to share a tutorial for Concrete smeared cracking I hope it will help a lot to many people?

@FaisalQayyum

3 жыл бұрын

I have not worked on that before, if you have an example case, i would love to collaborate and share the video for public reference

Great! Could you please send me the values of Fraction Criterion (type=fatigue) that you have used (c1,c2,..,G)?

@FaisalQayyum

3 жыл бұрын

I can share the files with you if you can send me a request on my email address, fysalqayyum@yahoo.com

@MegaMirza75

11 ай бұрын

HI, do you know how to define Fraction Criterion (type=fatigue) in Abaqus? i couldnt find one. i find the one in interaction property manager, but it only shows VCCT and enhanched VCCT

Hi! Can I use the same approach on a 3D CT specimen? I have been trying this approach for the past couple of days but can't get the simulation started as I can't understand how to define debond conditions in order to use Paris Law constants

@FaisalQayyum

3 жыл бұрын

It would be great if you can please explain the issue in detail. I cannot suggest anything from the information you have shared

@NikitaKaminskyy

3 жыл бұрын

@@FaisalQayyum thank you for getting back so fast! Basically I have to simulate crack propagation on a 3D CT specimen subjected to fatigue with R=0.1. This crack growth must be done using XFEM and fatigue criterion must follow Paris Law with VCCT constants (c1, c2, c3, c4, delta G ,etc..) that I already have. After simulating crack propagation I have to take from Abaqus a da/dN curve and compare it with experimental results. I would be glad if you could help me to the best of your ability. If its easier for you, we can talk by email

@FaisalQayyum

3 жыл бұрын

@@NikitaKaminskyy I have never done exactly this kind of research work before, but seems doable. I have a lot to do these days so will not be able to respond in detail, but, you can contact me on fysalqayyum@yahoo.com for any specific issues and I would try to help to the best of my knowledge.

@FaisalQayyum

3 жыл бұрын

kzread.info/dash/bejne/eJl8tJOOmrqfps4.html made a new video on 3D cracks, maybe it will help

@lauraaboltina4390

2 жыл бұрын

@@NikitaKaminskyy your question is very similar to what I am now trying to figure out. Have you succeeded in finding the answer and creating such a model?

Did you use c1,c2,c3,c4?

@FaisalQayyum

8 ай бұрын

Yes. I can send you the files if you send me an email at fysalqayyum@yahoo.com

Can we do fatigue analysis using static general by mentioning amplitudes instead of direct cyclic approach....

@liyanashirin6208

Ай бұрын

Did you got the answer

Thanks for this video. What amplitude you have used for fixed boundary conditions? And If you have any reference for the value(42200) that you have used as fracture energy please share.

@FaisalQayyum

3 жыл бұрын

I did not use any amplitude for the fixed boundary condition. This is just an example video and 42200 was just an exemplary value which I used here.

@barman5186

3 жыл бұрын

@@FaisalQayyum thanks for you quick reply. I followed each steps, shown in this video. But crack is not propagating. Can you send me the cae and njl file? It will be helpful for me. kittusubrata@gmail.com.

@FaisalQayyum

3 жыл бұрын

@@barman5186 yes I can if you write me an email at fysalqayyum@yahoo.com

@barman5186

3 жыл бұрын

@@FaisalQayyum ok thanks 🙏

How to track the crack length of each cycle??

@FaisalQayyum

3 жыл бұрын

I think you will have to measure it manually using available post processing tools. If you want to learn more about that please refer to my video : studio.kzread.infozCVkfmAmwAM

Size of crack and plate do not seem to be compatible. Can you plz share the geometric details?

@FaisalQayyum

3 жыл бұрын

Yes, you are right, they are not compatible. I scaled up the simulation results in this case for better visualization of the phenomenon occurring.

hi can you make video on composite material

@FaisalQayyum

3 жыл бұрын

Hello, Thank you for the comment. There are many types of composites and each would have a varying modeling technique. Which one are you specifically talking about?

@narendrakumarjharesearchsc5159

3 жыл бұрын

@@FaisalQayyum polymer composite where matrix may be thermosetting or thermoplastic polymer and reinforcement may be glass fiber,carbon fiber carbon nano tube(cnt) etc and may or may not be filler material

Sir, could you please send me the cae file, followed your steps but not not able to get the same results.

@FaisalQayyum

3 жыл бұрын

Yes I can, please share your email address

@piyushchopda1906

3 жыл бұрын

Thanks in advance

Can you explain what data we can get from that simulation for the next video ?

@FaisalQayyum

3 жыл бұрын

Sure, can be done... Thank you for your suggestion.

@fiandicky1998

3 жыл бұрын

@@FaisalQayyum can you find crack length using that simulation?

@FaisalQayyum

3 жыл бұрын

Yes sure we can. By measuring the crack length using 'querry' option.

@fiandicky1998

3 жыл бұрын

@@FaisalQayyum I followed the steps you showed but it didn't work, i dont know why. want you sent cae file , please ?. fianace21@gmail.com

@FaisalQayyum

3 жыл бұрын

Yes I can share the cae files. Hopefully next week as I'm on holidays these days

why crack propagation is showing not available in direct cycling method to me

@ketankhamgaonkar4344

3 жыл бұрын

if anyone has idea please let me know

@FaisalQayyum

3 жыл бұрын

I'm not sure why

@suryaprasanthmuddana7038

2 жыл бұрын

I am also unable to get crack propagation in direct cyclic but using static general I got...

@MegaMirza75

11 ай бұрын

same for me, do you have the answer already?

Please guide me to carryout fatigue delamination growth simulation in DCB specimen

@FaisalQayyum

3 жыл бұрын

Heyyy, Can you please explain your problem more ?? It will be great if you can please share it a bit more specifically on email.

@FaisalQayyum

3 жыл бұрын

Do you want to run a simulation model similar to what has been shown in this simulation? onlinelibrary.wiley.com/doi/full/10.1111/ffe.12566

@lubnamalik3769

3 жыл бұрын

I want to simulate the fatigue delamination growth resistance in presence of fiber bridging

@lubnamalik3769

3 жыл бұрын

2D and 3D model done. 3D model have z pins. Now fatigue to be applied for 100 cycles

@lubnamalik3769

3 жыл бұрын

Please guide and support

Salaam Faisal sb , I am Himmat from taxila "Modeling XFEM fatigue crack propagation in ABAQUS using Direct Cyclic approach" I have tried to simulate this model but crack did not ove farward Can you share the file?

@FaisalQayyum

Жыл бұрын

Yes I can. Write me an email at fysalqayyum@yahoo.com

@himmatali1872

Жыл бұрын

@@FaisalQayyum THANKS FOR REPLY I HAVE SENT YOU AN EMAIL ALREADY

@FaisalQayyum

Жыл бұрын

I did not receive your email

Hello dr i have sent u on your yahoo mail , thanks in advance