FINITE ELEMENT FRACTURE ANALYSIS OF STEEL-CONCRETE BOND By

a. Makes any warranty or representation, express or implied, with respect to the accuracy, completeness, or usefulness of the infortnation contained in this report, or that the use of any apparatus, method, or process disclosed in this report may not infringe third party rights; or b. Assumes any liability with respect to the use of, or for damages resulting from the use of, any information, apparatus, method, or process disclosed in this report. c. Makes any endorsement, recommendation or preference of specific commercial products, commodities or services which may be referenced in this report. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of the National Science Foundation. FINITE ELEMENT FRACTURE ANALYSIS OF STEEL-CONCRETE BOND The effect of deformation pattern on bond strength is studied using a finite element model of a beam-end specimen. The model includes concrete, steel, and transverse reinforcement substructures. A splitting crack is assumed to occur along the specimen center line, and only one-half of the specimen is modeled. Splitting concrete is modeled using the nonlinear fractur