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Re: [Question #707888]: Why do particles in the concrete cube compression test disperse directly?

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From: Karol Brzezinski <question707888@xxxxxxxxxxxxxxxxxxxxx>
Date: Mon, 11 Sep 2023 18:30:32 -0000
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Question #707888 on Yade changed:
https://answers.launchpad.net/yade/+question/707888

    Status: Open => Answered

Karol Brzezinski proposed the following answer:
Hi Antonia,

1) Macro behavior is a result of microparameters, particle size, and
shape, constitutive laws, etc. For example, rock may have a stiffness of
70 GPa, while a sand sample has a stiffness of around 150 MPa.
Calibration is the best solution [1].

2) Timestep is overestimated for this model, although I am not sure why.
Please change dtSafety  to 0.1

Cheers,
Karol


[1] https://yade-dem.org/doc/formulation.html?highlight=calibration#normal-stiffness

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