Modelling the dynamic response of concrete with the damage plasticity model CDPM2

Combinations of damage mechanics and the theory of plasticity have shown to be suitable for modelling concrete’s quasi-brittle response in tension and low-confined compression, as well as the ductile response in confined compression. In this work, the recently proposed damage-plasticity constitutive model CDPM2 has been extended to the modelling of plain and reinforced concrete subjected to dynamic loading by making the damage part dependent on the strain rate. The approach is then applied to a dynamic compact tension test and a slab subjected to air blast loading for both of which experimental results have been reported in the literature.

[1]  Len Schwer.  MODELING REBAR: THE FORGOTTEN SISTER IN REINFORCED CONCRETE MODELING , 2014 .

[2]  Milan Jirásek,et al.  Numerical aspects of the crack band approach , 2012 .

[3]  K. Willam,et al.  Triaxial failure criterion for concrete and its generalization , 1995 .

[4]  G. Cusatis.  Strain-rate effects on concrete behavior , 2011 .

[5]  Morgan Johansson,et al.  On the Numerical Modelling of Bond for the Failure Analysis of Reinforced Concrete , 2017 .

[6]  Ganesh Thiagarajan,et al.  Experimental Behavior of Reinforced Concrete Slabs Subjected to Shock Loading , 2014 .

[7]  Zenon Mróz,et al.  Finite element analysis of deformation of strain‐softening materials , 1981 .

[8]  Peter Grassl,et al.  CDPM2: A damage-plasticity approach to modelling the failure of concrete , 2013, 1307.6998.

[9]  L. Sluys,et al.  A numerical study on crack branching in quasi-brittle materials with a new effective rate-dependent nonlocal damage model , 2017 .

[10]  G. R. Johnson,et al.  Fracture characteristics of three metals subjected to various strains, strain rates, temperatures and pressures , 1985 .

[11]  Z. Bažant,et al.  Crack band theory for fracture of concrete , 1983 .

[12]  P. Grassl,et al.  Modelling the failure of reinforced concrete with nonlocal and crack band approaches using the damage-plasticity model CDPM2 , 2016 .

[13]  Joško Ožbolt,et al.  Dynamic fracture of concrete compact tension specimen: Experimental and numerical study , 2013 .

[14]  D. C. Franco,et al.  Measurement of fracture energy of concrete at high strain rates , 2018 .

[15]  Joško Ožbolt,et al.  Tensile behavior of concrete under high loading rates , 2014 .

[16]  Peter Grassl,et al.  A damage-plasticity model for the dynamic failure of concrete , 2011 .