Mechanics-based statistics of failure risk of quasibrittle structures and size effect on safety factors.

  title={Mechanics-based statistics of failure risk of quasibrittle structures and size effect on safety factors.},
  author={Zdenek P. Bazant and S. Pang},
  journal={Proceedings of the National Academy of Sciences of the United States of America},
  volume={103 25},
In mechanical design as well as protection from various natural hazards, one must ensure an extremely low failure probability such as 10(-6). How to achieve that goal is adequately understood only for the limiting cases of brittle or ductile structures. Here we present a theory to do that for the transitional class of quasibrittle structures, having brittle constituents and characterized by nonnegligible size of material inhomogeneities. We show that the probability distribution of strength of… CONTINUE READING
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