tensile crack are not generating while using TSSR

Hello Shiv,

Since Yade relies on this forum as a knowledge base, please avoid using links when possible. Especially when they reference scripts. Links have the tendency to break with time and even if they don't break, the keywords contained within are not searchable by launchpad search engine. So please, post your MWE's to the forum. Thank you for understanding :-).

The question is unclear to me. Is the slope not failing at all? If so, are the bonds all failing in shear? What methods have you already tried? Surely you could cause some tensile failures by reducing the tensile strength of the bonds. Have you tried that? Or you could increase the number of times you factor the strengths. Have you tried that?

Cheers,

Robert

Hi Robert,

Thanks for helping me out. I will keep in my mind whatever you have suggested to me and I will try not to post reference scripts in the link.

the slope is falling while execution of my script but at the very steady rate. I am not aware of all the bonds are failing in shear or not. But I have attached an image of my model after executing it finally.

link:https://drive.google.com/file/d/1vhLhBI_-Pg2NOt6UdotxrNSoVXVRiN0i/view?usp=sharing

So you can see that in my slope is falling but it has fallen down only a little bit.

Till now I have used the only TSSR method as I want to calculate the factor of safety of rock slope. I am not sure about this "surely you could cause some tensile failures by reducing the tensile strength of the bonds" because I am using definite properties of the rock. I have n't tried this method yet

Also, I have tried increasing the number of times I factor the strengths by reducing the Iterations period in the following right

"O.engines=O.engines+[PyRunner(iterPeriod=500,command='reduceStrength()',label='strength reduction')]"

But the plot which I have obtained after executing this changes in my script is like this
Link: https://drive.google.com/open?id=1gSiaEHr-G1jana7xX0J7Wh4anZqoPvCF

I don't understand why it has grown instantly and then become again constant.

>>
I am not aware of all the bonds are failing in shear or not
>>

Is it worth investigating?

>>
because I am using definite properties of the rock.
>>

Have you calibrated your DEM microproperties? DEM microproperties should be calibrated so that the macroproperties match the correct rock properties.

>>
I don't understand why it has grown instantly and then become again constant.
>>

So you are observing tensile cracks? Presumably, you have 5 tensile cracks occur between iteration 0.7e4-0.8e4. nbTensCracks is giving you the total number of tensile cracks. At iteration 0.8e4 the total number of tensile cracks does not change in your model. This is why it grows and then stays constant.

>>
Is it worth investigating?
>>
How can I investigate that bonds are failing in shear or not?

I have n't calibrated DEM micro properties. So I think I should focus on Calibrating micro properties of the rock. So can you suggest me important test which I should consider while Calibration?

And till now I am not able to understand why my rock slope is collapsing till a stage then it stops collapsing even though there are iterations left. Can it possible that I have n't calibrated micro properties of DEM that's why such thing is occurring while running my model

>>
How can I investigate that bonds are failing in shear or not?
>>

I would suggest using nbShearCracks or visualizing them with VTKRecorder.

I am happy to answer off topic questions in dedicated threads :-)

It is generating the same graph which I have obtained earlier. But thanks for the help