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Re: [Question #258401]: ForceRecorder Unit

 

Question #258401 on Yade changed:
https://answers.launchpad.net/yade/+question/258401

    Status: Open => Answered

Jan Stránský proposed the following answer:
Hi Luis,
could you give the script + .stl files somewhere on the internet such that
we can download them and examine your example?
Thanks
Jan


2014-11-29 20:01 GMT+01:00 Luis Barbosa <
question258401@xxxxxxxxxxxxxxxxxxxxx>:

> Question #258401 on Yade changed:
> https://answers.launchpad.net/yade/+question/258401
>
>     Status: Answered => Open
>
> Luis Barbosa is still having a problem:
> Hi Jan,
> Thanks for while,
> Let me describe a little bit my experiment:
>
> I've constructed:
> A small "soil bin": width:0.2m length:0.2m hight:0.3m
> 3 types of tip to a penetrometer: 1- cone with 90 degrees; 2- cone with 30
> degrees and 3- flat tip
> 4 types of granular material: micro spheres of glass, polystyrene, steel
> and sand.
> The soil bin was filled each time with a different material;
>
> Using an Instron (universal testing machine), I've done the penetration
> test for each tip, at 0,005 m/s in all materials.
> The main aim is get the energy x depth as done by [1].
> My first idea was use ForceRecorder to make a direct comparison with
> results from Instron.
>
> Simulations:
>
> I've imported to yade, all penetrometers and soil bin as .stl;
> Created a cloud of spheres with initial porosity; (There is an open
> question mine, about voxelporosity)
> After the gravity deposition the penetrometer starts to travel and the
> results are acquired.
> I'm using PWaveTimeStep instead of GlobalStiffnessTimeStepper.
>
> Best regards.
> Luis
>
>
> [1] Asaf.Z, Rubinstein D., Shmulevich I. Determination of discrete element
> model parameters required for soil tillage. Soil and tillage Research, 2007.
>
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