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Updated: Jul 13, 2025
09:12
A Method for Studying the Temperature Dependence of Dynamic Fracture and Fragmentation
Published on: June 28, 2015
8.6K
Universal behavior in fragmenting brittle, isotropic solids across material properties
Joel T Clemmer1, Mark O Robbins2
1Sandia National Laboratories, Albuquerque, New Mexico 87185, USA.
Physical Review. E
|October 18, 2023
Summary
This study reveals how material properties influence brittle solid fragmentation. Key findings show grain size distributions and internal friction depend on strain rate and material characteristics.
Area of Science:
- Solid Mechanics
- Materials Science
- Computational Physics
Background:
- Understanding fragmentation in brittle solids is crucial for predicting material failure.
- Material properties significantly influence fragmentation dynamics, but systematic studies are limited.
Purpose of the Study:
- To investigate the impact of varying material properties on the critical behavior of brittle solids during fragmentation.
- To develop a model that calibrates elastic moduli and fracture toughnesses by incorporating particle interactions.
Main Methods:
- Utilized a bonded particle model with breakable two- and three-body particle interactions.
- Analyzed fragmentation in quasistatic and high-rate limits.
- Employed a scaling description to characterize grain mass distributions across different rates and system sizes.
Main Results:
- Fragmentation yields power-law grain size distributions, truncated by system size or strain rate.
- Consistent scaling of mean-square grain mass observed across all material properties.
- Poisson's ratio affects grain production, influencing evolving granular structure and rheology.
Conclusions:
- Material properties critically govern fragmentation behavior in brittle solids.
- A unique rheology emerges, with internal friction decaying logarithmically with strain rate and decreasing with strain.
- The findings provide insights into the relationship between material properties, fragmentation, and macroscopic mechanical response.
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