Numerical modelling of fracture intensity increase due to interacting blast waves in three-dimensional granitic rocks
| Dataset title | Numerical modelling of fracture intensity increase due to interacting blast waves in three-dimensional granitic rocks |
|---|---|
| Dataset creators | Adriana Paluszny, Imperial College London Robert Bird, Imperial College London Robin N. Thomas, Imperial College London |
| Dataset theme | Geoscientific Information |
| Dataset abstract |
This work presents a detailed three-dimensional finite element based model for wave propagation, combined with a postprocessing procedure to determine the fracture intensity caused by blasting. The data generated during this project includes output files of all simulations with detailed fields, geometries and meshes. The model incorporates the Johnson-Holmquist-2 constitutive model, which is designed for brittle materials undergoing high strain rates and high pressures and fracturing, and a tensile failure model. Material heterogeneity is introduced into the model through variation of the material properties at the element level, ensuring jumps in strain. The algorithm for the combined Johnson-Holmquist-2 and tensile failure model is presented and is demonstrated to be energy-conserving, with an open-source MATLAB implementation of the model. A range of sub-scale numerical experiments are performed to validate the modelling and postprocessing procedures, and a range of materials, explosive waves and geometries are considered to demonstrate the model's predictive capability quantitatively and qualitatively for fracture intensity. Fracture intensities on 2D planes and 3D volumes are presented. The mesh dependence of the method is explored, demonstrating that mesh density changes maintain similar results and improve with increasing mesh quality. Damage patterns in simulations are self-organising, forming thin, planar, fracture-like structures that closely match the observed fractures in the experiments. The presented model is an advancement in realism for continuum modelling of blasts as it enables fully three-dimensional wave interaction, handles damage due to both compression and tension, and relies only on measurable material properties. The uploaded data are the specific simulation outputs for four explosion models occurring on two different rock types, and the specific fracture patterns generated. |
| Dataset content dates | Jan 2021- Jan 2022 |
| Dataset spatial coverage | Not applicable |
| Dataset supply format | Geometry, meshes and property viasualisation files, as well as scripts and comma separated results and log files of simulations (*.3dm, *.vtk, *.txt, *.m, *.uns, *.tin) |
| Dataset language | English-United Kingdom |
| Dataset discovery metadata record | Discovery Link to the dataset's BGS Discovery Metadata record |
| Dataset publisher | NERC EDS National Geoscience Data Centre |
| Dataset publication date | 10/05/2023 |
| Dataset digital object identifier (DOI) | 10.5285/6665d60d-a516-4ff1-8e66-89f4a0685007 |
| Dataset citation text | Paluszny, A., Bird, R., Thomas, R.N. (2023). Numerical modelling of fracture intensity increase due to interacting blast waves in three-dimensional granitic rocks. NERC EDS National Geoscience Data Centre. (Dataset). https://doi.org/10.5285/6665d60d-a516-4ff1-8e66-89f4a0685007 |
| Constraints and terms of use | This data set is available under Open Government Licence, subject to the following acknowledgement accompanying any reproduced materials: "Contains data supplied by permission of the Natural Environment Research Council [YEAR]"./td> |
| Access the dataset | https://webapps.bgs.ac.uk/services/ngdc/accessions/index.html#item178806 |
| Further information | Corresponding paper |