Question about dynamic timescale

Hi,

I have been trying to simulate particle breaking in triaxial test using different ways. As we know, there are two methods for simulating particle breaking, one is multigenerationl approach, in which single element break and are replaced by a new generation of smaller grains, previously non-existent in the simulation. But the problem is that a new generation of spherical particles dose not fit into the volume of the lost particle, which means mass conservation can't be satisfied.

Recently, I read an article from Ben Nun[1] that using PFC to simulate particle breaking. The article describes the following:

We conserve the mass by involving two phases. During the first phase the fragments are prescribed and randomly rotated, without conserving the mass, as illustrated in figure 6. However, a rapid linear expansion is then introduced in the second phase to gain back the overall solid mass.
Our mass conservation strategy is supported by the identification of two distinct dynamic timescales during crushing: (i) the local timescale, through the rapid rearrangement of the fragments that occurs immediately after a particle splits and (ii) the global timescale, from the dynamics of the boundary conditions (here, the moving walls).

My questions is :
Can Yade complete the above two processes? If yes, which example can help me to simulate, if not, can you give me some suggestions.

[1]The role of self-organization during confined comminution of granular materials. http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.662.5312&rep=rep1&type=pdf

Thanks,
Cloud