Journal of Materials Science

, Volume 29, Issue 9, pp 2335–2340 | Cite as

R curves for energy dissipative materials



This paper focuses on the theoretical simulation of fracture and stable crack growth of specimens with non-local damage. The first law of thermodynamics allows the identification or definition of appropriate crack-driving forces. The results are compared with recent ideas on defining tearing resistance for uncontained yield through the energy dissipation rate. A hypothesis regarding the conversion of mechanical into thermal energies within the non-local damage region is formulated to model the fracture behaviour of energy dissipative materials with rising crack resistance characteristics. The material's capacity to develop non-local damage is assumed to decrease with the actual damage level. This decrease relates linearly with the remaining resources of the material in dissipating energy. The hypothesis, which proposes a square root function for theoretical J-R curves, is verified by the regression analysis of experimental data regarding a European round-robin test of different steels.


Energy Dissipation Thermal Energy Dissipation Rate Fracture Behaviour Damage Level 
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Copyright information

© Chapman & Hall 1994

Authors and Affiliations

  • P. Will
    • 1
  1. 1.Department of Electrical EngineeringCollege for Technology and EconomicsMittweidaGermany

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