yade-users team mailing list archive

[Anton Gladky <gladky.anton@xxxxxxxxx>]

Hi, Luc,

yes, I am using my own script for uniaxial tests (a simple one). Vaclav
recommended me somehow to use uniaxialstrainer, but I still use mein. I
know, I have to try the uniaxailstrainer.
That is why I did not compare.

I do not use friction forces for facets, so I do not think it is a big
difference between facets or spheres driving.

I have attached the screenshot from tension simulation. As I described
earlier, the specimen divided into 2 parts with different mask.

Cheers,
______________________________

Anton Gladkyy


2010/5/28 luc scholtes <lscholtes63@xxxxxxxxx>

> Hi Anton,
>
> I am a bit curious, but, finally, you did not use the uniaxial strainer but
> your own "test" with facets to perform uniaxial tests? Have you tried to
> compare the results for both methods (particles or facet driving)? I was
> thinking about doing such a test to see how boundary conditions affects the
> assembly behaviour but I am still struggling with other stuff...
>
> If you had any insights, it would be great.
>
> Luc
>
> 2010/5/26 Anton Gladky <gladky.anton@xxxxxxxxx>
>
> Thanks again for suggestion!
>>
>> I would like to share the way, how I have done tension test. Maybe, it
>> will be useful for somebody else.
>> I used very powerful "mask" parameter. One half of the cylinder I marked
>> with the mask 011, another one 101.
>> Then I created the facets: one with the mask 010, which affect the first
>> group of particle and doesn't with the second;
>> and another "fixed" facet with the mask 100, which affect only the second
>> group of spheres.
>>
>> Then I move one of facet and measure the resulting force. Sorry, for maybe
>> completeness, but I found "mask" parameter as a
>> very useful and flexible one.
>>
>> Cheers,
>>
>> Anton
>>
>>
>> 2010/5/6 Václav Šmilauer <eudoxos@xxxxxxxx>
>>
>> > One more question (hopefully, the last for this topic ;) ), do you
>>> > block boundary particles from another side of specimen from motion?
>>>
>>>
>>> https://www.yade-dem.org/sphinx/yade.wrapper.html#yade.wrapper.UniaxialStrainer.asymmetry
>>>
>>> So they are either blocked (in the sense as determined by
>>> blockDisplacement and blockRotations) or moved at half speed against the
>>> other end which also moves at half-speed.
>>>
>>> HTH, Vaclav
>>>
>>>
>>>
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>>
>>
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>
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Attachment: tension.jpg
Description: JPEG image