Sustained Loading Fracture and Strength of Concrete Modelled by Creep-Damage Interaction
The phenomenon creep fracture is well-known for concrete. In the present paper, the Material Failure Process Analysis (MFPA2D) model for concrete in the failure process is coupled in series with the time-dependence of the concrete damage and deformation. Further, the progressive creep failure of concrete specimens under constant tensile loading was numerically simulated and the typical time-dependent deformations: the transient creep, the steady-state creep and the accelerating creep were also represented. The numerical simulations indicate that the macroscopic creep failure is induced by clusters of micro-fractures on a mesocopic scale. The above numerical results offer us some theoretical indications and instructions to further investigate the instability failure mechanisms of engineering concrete structures in civil and hydraulic engineering.
M.H. Aliabadi, Qingfen Li, Li Li and F.-G. Buchholz
T. Xu et al., "Sustained Loading Fracture and Strength of Concrete Modelled by Creep-Damage Interaction ", Key Engineering Materials, Vols. 324-325, pp. 51-54, 2006