Defining a 3D contour integral crack in ABAQUS

[@saqarseifollahi9084]

It was the best video I've seen for 3d cracks. Thanks a bunch. I am going to use it many times for my mastering project. So helpful and illuminating.

[@rockybalboa9198]

You have saved my life. Such a wonderful tutorial !

[@FaisalQayyum]

My pleasure 😊

[@thanhnguyen-zo6mm]

very helpful, thanks!

[@Dr_Mohsin_Sattar]

helpful

[@Aqsa_Qambrani]

Why do you circular partition on the predefined crack notch tip?

[@FaisalQayyum]

@@Aqsa_Qambrani because that's the way to have wedged elements at the crack tip and they help with the structured mesh around the crack tip for better convergence and reliable J Int. Value at the end.

[@Aqsa_Qambrani]

@FaisalQayyum Thanks 🙏

[@sunils1056]

Thank you for the nice video. Is there any reference limit to the smaller circle on the crack tip ? Also will it affect the results if the dimensions of these circles are changed ?

[@FaisalQayyum]

Good question. There are some norms. Best practice is to try to keep the aspect ratio of the elements close to 1.

[@sunils1056]

@@FaisalQayyum Thank you

[@antongoransson5484]

You are a saviour

[@FaisalQayyum]

Thank you :)

[@mh.momenii6931]

Tnx for the great video. Do you know how to simulate crack growth in hyperelastic models sir?

[@mohamedaminefaham3390]

Hello sir, Thank you for your videos, I'm working on a fatigue test on steel specimen and i want to visualize temperature in the crack tip during the propagation phase. Is that possible in abaqus? Thank's,

[@FaisalQayyum]

Hello, this would be a very interesting simulation. I have no experience with such model though.

[@narendrakumarjharesearchsc5159]

hi sir, can you say how will you draw a graph if we are comparing experimental data and numerical data if we are collecting experimental paper from other author because we dont have exptl data point only we r having is the numerical data..............please say

[@FaisalQayyum]

That is an interesting question, the contour integral approach yields J-Int or SIF on the crack tip and experimentally we obtain CMOD, crack length and applied force. This data is analytically processed and plotted together with a similar reference. Please take a look into my previous publications for more details: scholar.google.co.uk/citations?user=lXrpH_AAAAAJ&hl=en

[@dsflkvbndflvkndflomvpsdmvlkasd]

Dear, That was a great video. Can u make a similar video on XFEM crack in 3D? I also wanted to learn about the application of fatigue loading (using R, at Higher amplitude). Thanks.

[@FaisalQayyum]

I do not think that there is a problem there.

[@mumay2537]

How do wedge elements work in the crack field? I keep getting error

[@FaisalQayyum]

What's the error that you're getting ?

[@mumay2537]

@@FaisalQayyum ***ERROR: TRIANGLES, TETRAHEDRA, AND WEDGES MAY NOT BE USED IN A CONTOUR INTEGRAL REGION. ELEMENT 101761 INSTANCE PART-1-1 IS WITHIN A CONTOUR REGION

[@martind.6053]

Thanks !

[@FaisalQayyum]

Welcome!

[@mopidevimanichaitanya6847]

Why drawing the two circles

[@FaisalQayyum]

For spider meshing later

[@tomjerry9555]

thank you very much！