A breakage model for particulate solids under impact loading

Li Ge Wang*, Jian Fei Chen, Jin Y. Ooi

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


This paper presents a breakage model of particulate solids under impact loading based on a mechanical approach. Existing breakage models are assessed using the experimental data from single particle impact tests, indicating a more general breakage model is required. Indentation fracture mechanics is used to account for surface damage under dynamic loading. The effect of impact angle is considered in the model, which rationalizes the contributions of both the normal and tangential impact velocity. A unified curve of breakage propensity is constructed using the equivalent velocity under oblique impact based on the experimental data from this study and the literature. This model provides a basis to evaluate breakage propensity of brittle/semi-brittle particles subject to oblique impact and the proposed equivalent velocity has a potential to improve the description of impact energy spectra for milling processes where oblique impact of particle is common and typically ignored.

Original languageEnglish
Pages (from-to)669-684
Number of pages16
JournalPowder Technology
Early online date19 Aug 2021
Publication statusPublished - Dec 2021


  • Breakage model
  • Equivalent velocity
  • Impact angle
  • Impact loading
  • Indentation fracture
  • Particulate solid


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