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

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, leadin...

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Bibliographic Details
Published inProgress in materials science Vol. 88; pp. 186 - 231
Main Authors Salvado, Francisco C., Teixeira-Dias, F., Walley, Stephen M., Lea, Lewis J., Cardoso, João B.
Format Journal Article
LanguageEnglish
Published Oxford Elsevier BV 01.07.2017
Subjects
Adiabatic flow
Aluminum base alloys
Armor
Blasting (explosive)
Constitutive models
Deformation effects
Elastic deformation
Explosions
Face centered cubic lattice
FCC metals
High strain rate
Materials science
Mathematical models
Plane stress
Propagation
Protective structures
Shock waves
Strain rate
Stress propagation
Wave propagation
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ISSN0079-6425
1873-2208
DOI10.1016/j.pmatsci.2017.04.004

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Summary: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
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ISSN:0079-6425
1873-2208
DOI:10.1016/j.pmatsci.2017.04.004