R-curve modeling of rate and size effects in quasibrittle fracture

@inproceedings{Bazant1993RcurveMO,
  title={R-curve modeling of rate and size effects in quasibrittle fracture},
  author={Zdenek P. Bazant and M. Jir{\'a}sek},
  year={1993}
}
The equivalent linear elastic fracture model based 0:;': an R-curve (a curve characterizing the variation of the critical energy release rate 'WIth the crack propagation length; IS generalized to describe both the rate effect and size effect observed in concrete. rock or other quasi brittle matenals. It is assumed that the crack propagation velocity depends on the ratio of the stress intensity factor to its criti~':!.l value based on the R-curve and that this dependence has the form of a power… CONTINUE READING
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