Data from: The retard-boost effect of fragmentation in rock avalanches

This study presents a micro-mechanical numerical investigation into the fundamental aspects of progressive fragmentation and its effects on rock avalanche dynamics. The simulations involve breakable rock assemblies that are released along an inclined plane and subsequently collide onto a horizontal surface. A discrete-continuous numerical model is adopted to effectively capture progressive particle breakage and complex interparticle interactions. By incorporating variations in fracture mechanics parameters, the model systematically evaluates the influence of progressive grain fragmentation on rock avalanche dynamics. A multi-layer analysis method and the interlayer transmitting coefficient is proposed to analyze the temporal and spatial kinematics, stress distribution and the ongoing particle size reduction process. The results indicate that grain fragmentation significantly influences rock avalanche motion, identified as the \"retard-boost\" effect in this study. At low fragmentation deg..., This includes results of the numerical investigation into the fundamental aspects of progressive fragmentations within rock avalanches. This model is developed based on the platform of the commercial software ABAQUS. This link includes dataset of figures in this manuscript., , # Data from: The retard-boost effect of fragmentation in rock avalanches

[https://doi.org/10.5061/dryad.m905qfv9x](https://doi.org/10.5061/dryad.m905qfv9x)

## Description of the data and file structure

This dataset includes the results of a numerical investigation into the fundamental aspects of progressive fragmentation within rock avalanches. This model is developed based on the platform of the commercial software ABAQUS. The data supports the figures in the associated manuscript, providing detailed information on velocity distributions, stress evolution, energy dissipation, and particle dynamics. This link includes dataset of figures in this manuscript.

### Files and variables

#### File: Dataset.xlsx

**Overview**

The dataset is organized into an Excel file, where each sheet corresponds to a specific figure in the manuscript. Each sheet contains the raw or processed data used to generate the respective figure. Below is a detailed description of the data in each sheet.

**Sheet ...