A review on the strain rate dependency of the dynamic viscoplastic response of FCC metals

Francisco Salvado, Filipe Teixeira-Dias, Stephen Walley, Lewis Lea, João B. Cardoso

Research output: Contribution to journalReview articlepeer-review

59 Citations (Scopus)

Abstract

The response of structures and materials subject to impulsive loads remains a field of intense research. The dynamic loading and temperature increase affect the material's mechanical/failure response. For example, strains due to explosive blast will increase at rates from 102 to 104 s−1, leading to regimes of elastic/plastic wave propagation, plane stress and adiabatic deformations. Few constitutive models consider high strain rate effects, however some constitutive approaches that were developed and tested at low strain rate regimes will also be addressed here due to their relevance. Specific reference will be made to strain rate regimes close to 104 s−1, where shock waves may develop. The paper focuses on constitutive models for polycrystalline face-centred-cubic (FCC) metals since their behaviour under high strain rate regimes is not yet fully understood mostly due to path loading dependency. Reference is also made to aluminium alloys since they are widely used in virtually all fields of industry and in armour and protective structures and systems. A basic review of the main theoretical aspects that constitute the basis for most of the constitutive models described is also presented and the main features of each model are thoroughly discussed.

Original languageEnglish
Pages (from-to)186-231
Number of pages46
JournalProgress in Materials Science
Volume88
DOIs
Publication statusPublished - Jul 2017

Keywords

  • Constitutive models
  • Dynamic loading
  • FCC metals
  • High strain rate
  • Modelling
  • Viscoplastic behaviour

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