Hello everyone,
I would like to ask a question about particle scaling.
I have the particle size distribution data of crushed sand particles. However, the fragment size is too small which will significantly influence the computational efficiency. Therefore, I scaled up the fragment size and used BPM to model a sand particle with a diameter of 1.5mm (D50). After I had done it, the time step was still small (10^-9 s).
Considering the critical time-step is dependent on the smallest mass and stiffness, so then I scaled the stiffness and density, and then the time step increased to 10^-7 s.
But this would change its mechanical response behaviour. I would like to ask if there is any way to scale including fragment size, material properties such as mass and stiffness, and be able to make the mechanical behaviour of modeled particles close to the behaviour of real sand.
Kind regards,
Chao
Scaling in the context of particle behavior simulation in discrete element methods (DEM) involves balancing the computational efficiency with accurately representing real-world particle interactions. In your case, you're aiming to scale up the particle size and adjust material properties while retaining the mechanical behavior of real sand particles.
Here are a few considerations and strategies:
The goal is to strike a balance between computational efficiency and representing the real-world mechanical behavior of sand particles. It may involve a compromise and iterative adjustments to achieve a satisfactory outcome.
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