Application of the Crystallo-Calorific Hardening approach to the constitutive modeling of the dynamic yield behavior of various metals with different crystalline structures

Charles Francart, Yaël Demarty, Nadia Bahlouli, Said Ahzi

Research output: Contribution to journalArticle


The Crystallo-Calorific Hardening (CCH) constitutive approach, aims to formulate the yield behavior of metals by taking into account different lattice structures (FCC, BCC and HCP). Such physically-based models have been developed to provide accurate predictive tools over wide ranges of temperatures and strain rates and especially for impact applications. In this work, these models are numerically implemented for application to numerous industrial well-known metals with different lattice structures (Cu-a1 copper, pure Molybdenum, AZ31B-O magnesium alloy, Ti-6Al-4V titanium alloy and 36-NiCrMo-16 (AISI4340) austenitic steel). To identify the models parameters and to compare our predicted results to experimental ones, we also performed experimental tests, namely uniaxial compression tests under both quasi-static and dynamic loadings rates. The determined unique sets of parameters of the CCH models are provided in this paper for each considered material. The modeling of each considered material is carefully explained and the comparisons between experimental results and CCH model predictions are thoroughly discussed.

Original languageEnglish
Pages (from-to)52-66
Number of pages15
JournalInternational Journal of Impact Engineering
Publication statusPublished - 1 Nov 2017
Externally publishedYes



  • Constitutive modeling
  • Crystallo-Calorific Hardening
  • Crystallographic structure
  • Dynamic yield behavior
  • High strain rate
  • Metals

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Automotive Engineering
  • Aerospace Engineering
  • Safety, Risk, Reliability and Quality
  • Ocean Engineering
  • Mechanics of Materials
  • Mechanical Engineering

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