Continuum damage response of a center-cracked plain concrete panel in tension
✍ Scribed by E.P. Chen
- Publisher
- Elsevier Science
- Year
- 1991
- Tongue
- English
- Weight
- 569 KB
- Volume
- 39
- Category
- Article
- ISSN
- 0013-7944
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✦ Synopsis
A continue damage theory which accounts for the degradation of material strength under quasi-static loading conditions is applied in this investigation to determine the response of a center-cracked concrete panel under tension. The theory is isotropic in nature in that the damage measure is taken to be a scalar. The damage mechanism in this theory is the interaction and growth of subscale cracks which pre-exist randomly in the material. These cracks are activated by the maximum principal tensile strain and the density of activated cracks are described by a Weibull statistical distribution. In the global scale, the activation of the subscale cracks contributes to the degradation of the material moduh. The model has been impl~ent~ into a finite element code SANTOS to obtain the solution to the problem. Qualitative features such as the development of a fracture process zone, damage localization and strain softening phenomenon have been observed. Quantitative failure prediction based on the observed global strain softening of the specimen is also discussed.