NONLOCAL CONTINUUM APPROACH TO STRAIN-SOFTENING AND DISTRIBUTED CRACKING IN CONCRETE STRUCTURES.

Zdenek P Bazant*, T. P. Chang

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The basic theory of nonlocal continuum and the finite element approximation is briefly outlined and various numerical applications are presented, both in statics and in wave propagation. It is shown that stable strain-softening zones of finite size are obtained with this model, and physically correct convergence properties at mesh refinement are achieved. Determination of the characteristic length of the material and relationship to nonlinear fracture mechanics are described and illustrated by examples. Finally, the question of step-by-step integration algorithm for strain-softening materials is analyzed and an effective new algorithm, called the exponential algorithm, is presented and illustrated. The formulation is also extended to materials which exhibit simultaneous progressive cracking (damage) and creep or plasticity.

Original languageEnglish (US)
Title of host publicationTransactions of the International Conference on Structural Mechanics in Reactor Technology
PublisherNorth-Holland
Pages51-56
Number of pages6
ISBN (Print)044486962X
StatePublished - Dec 1 1985

Publication series

NameTransactions of the International Conference on Structural Mechanics in Reactor Technology
VolumeH
ISSN (Print)0167-563X

ASJC Scopus subject areas

  • Engineering(all)

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