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Metadata Files

Data Publication

Numerical modelling of fracture intensity increase due to interacting blast waves in three-dimensional granitic rocks

Paluszny, Adriana | Bird, Robert | Thomas, Robin N.

NERC EDS National Geoscience Data Centre

(2023)

Descriptions

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.

Keywords


Originally assigned keywords
rock blasting
three-dimensional
finite element
fracture growth
wave propagation
fracture intensity
Johnson-Holmquist-2
constitutive model
elastoplastic
damage
elastoplastic-damage
tensile
heterogeneity
crack
crack growth
energy-conserving
MATLAB
sub-scale numerical experiments
materials
explosive waves
explosion
dynamic
dynamic deformation
geometry
evolving geometry
predictive model
mesh
evolving mesh
self-organizing
damage patterns
fracture patterns
continuum modeling
compression
tension
material properties

Corresponding MSL vocabulary keywords
intragranular cracking
intragranular crack

MSL enriched keywords
Inferred deformation behavior
microphysical deformation mechanism
intragranular cracking
Analyzed feature
deformation microstructure
brittle microstructure
intragranular crack
igneous rock - intrusive
acidic intrusive
granite
Measured property
strain
Measured property
strain

MSL enriched sub domains i

rock and melt physics
microscopy and tomography
analogue modelling of geologic processes

Source

https://www2.bgs.ac.uk/nationalgeosciencedatacentre/citedData/catalogue/6665d60d-a516-4ff1-8e66-89f4a0685007.html

Source publisher

NERC EDS National Geoscience Data Centre


DOI

10.5285/6665d60d-a516-4ff1-8e66-89f4a0685007


Creators

Paluszny, Adriana

Imperial College London

Bird, Robert

Imperial College London

Thomas, Robin N.

Imperial College London


Citation

Paluszny, A., Bird, R., & Thomas, R. N. (2023). Numerical modelling of fracture intensity increase due to interacting blast waves in three-dimensional granitic rocks [Data set]. NERC EDS National Geoscience Data Centre. https://doi.org/10.5285/6665D60D-A516-4FF1-8E66-89F4A0685007


Dates

Issued:

2023