Cohesive Soil

Asked by Hossein

Hi everybody
I'm going to model clay-silt soil, so I have to take cohesive contact law. There are a majority of the contact law in the literature, however it seems that Hertz Mindlin or Lundig contact law would be a good choice.

Does any body have any idea about the differences between Hertz Minlin and Lundig contact law?
In general what would be your suggestion in terms of contact law for Clay-Silt soil?

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Jan Stránský (honzik) said :
#1

Just a note, it is Luding, not Lundig

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Robert Caulk (rcaulk) said :
#2

Hello,

In an attempt to elicit empathy and perhaps help you formulate a better question, I would like to give you an answer that is equally ambiguous to the question.

>>In general what would be your suggestion in terms of contact law for Clay-Silt soil?

I suggest you use a contact law that fits your scale of interest.

Cheers,

Robert

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Hossein (hossein75) said :
#4

First of all, Thanks for recommendation Robert,

Second of all, I have searched to get information about some contact laws such as Hertz Mindlin or Luding.

I could find a few soil simulations according to the Hertz Mindlin, while I didn't find any soil simulation with Luding contact law.

 So, I wonder if, it would be acceptable in the literature to pick Luding contact for a soil??

I will appreciate that if any one can give some more information about capability of the Luding contact law to model the soil.

Best Regard,

Hossein

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Jan Stránský (honzik) said :
#5

> I could find a few soil simulations according to the Hertz Mindlin, while I didn't find any soil simulation with Luding contact law.

what is "simulation"?
Yade script?
General modeling approach?
Usage in journal articles?
... ?

Anyway, you have reference to literature in the documentation [2] and usage in yade example scripts [3]

> So, I wonder if, it would be acceptable in the literature to pick Luding contact for a soil??

What is "the literature"?
Why would not it be acceptable?

> I will appreciate that if any one can give some more information about capability of the Luding contact law to model the soil.

We will appreciate that if you can give some more information about what is "the soil" and what is "to model".
Where "some more information" = much much more information.

Cheers
Jan

[1] https://www.yade-dem.org/wiki/Howtoask
[2] https://yade-dem.org/doc/yade.wrapper.html#yade.wrapper.LudingMat
[3] https://gitlab.com/yade-dev/trunk/-/tree/master/examples/LudingPM

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Hossein (hossein75) said :
#6

Ok
Thanks