MICROPLANE MODEL M4 FOR CONCRETE. II: ALGORITHM AND CALIBRATION

This paper presents Part II of a two-part study in which a new improved version of the microplane constitutive model for damage-plastic behavior of concrete in three dimensions is developed. In Part II, an explicit numerical algorithm for model M4 is formulated, the material parameters of model M4 are calibrated by optimum fitting of the basic test data available in the literature, and the model is verified by comparisons with these data. The data in which strain localization must have occurred are delocalized, and the size effect is filtered out from the data where necessary. Although model M4 contains many material parameters, all but four have fixed values for all types of concretes. Thus the user needs to adjust only four free material parameters to the data for a given concrete, for which a simple sequential identification procedure is developed. If the user's data consist only of the standard compression strength and the strain at uniaxial stress peak, the adjustment is explicit and immediate. Good agreement with an unusually broad range of material test data is achieved.

  • Availability:
  • Supplemental Notes:
    • Funding was provided to author Bazant by the U.S. Army Engineer Waterways Experiment Station, Vicksburg, Mississippi, under contract number DACA39-94-C-0025 with Northwestern University, and to author Caner by the National Science Foundation under grant CMS-9713944 to Northwestern University.
  • Corporate Authors:

    American Society of Civil Engineers

    1801 Alexander Bell Drive
    Reston, VA  United States  20191-4400
  • Authors:
    • Caner, F C
    • Bazant, Z P
  • Publication Date: 2000-9

Language

  • English

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00798482
  • Record Type: Publication
  • Contract Numbers: DACA39-94-C-0025, CMS-9713944, CMS-9732791
  • Files: TRIS
  • Created Date: Sep 20 2000 12:00AM