Numerical Study on Mixed-mode Fracture in Reinforced Concrete

Journal Article · Fri May 21 04:00:00 EDT 2010 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3452118· OSTI ID:21361956

Yu, Rena C; Saucedo, Luis; Ruiz, Gonzalo ^[1]

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1. University of Castilla-La Mancha, 13071 Ciudad Real (Spain)

The object of this work is to model the propagation of fracture in mixed-mode in lightly reinforced concrete beams. When a notched beam does not have enough shear reinforcement, fracture can initiate and propagate unstably and lead to failure through diagonal tension. In order to study this phenomenon numerically, a model capable of dealing with both static and dynamic crack propagation as well as the natural transition of those two regimes is necessary. We adopt a cohesive model for concrete fracture and an interface model for the deterioration between concrete and steel re-bar, both combined with an insertion algorithm. The static process is solved by dynamic relaxation (DR) method together with a modified technique to enhance convergence rate. The same DR method is used to detect a dynamic process and switch to a dynamic calculation. The numerically obtained load-displacement curves, load-CMOD curves and crack patterns fit reasonably well with their experimental counterparts, having in mind that we fed the calculations only with parameters measured experimentally.

• OSTI ID: 21361956
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1233; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALGORITHMS
ALLOYS
BUILDING MATERIALS
CALCULATION METHODS
CARBON ADDITIONS
COMPOSITE MATERIALS
CONCRETES
CONVERGENCE
CRACK PROPAGATION
CRACKS
FAILURES
FINITE ELEMENT METHOD
FRACTURE MECHANICS
FRACTURES
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS
MATHEMATICAL LOGIC
MATHEMATICAL SOLUTIONS
MATHEMATICS
MECHANICS
NUMERICAL ANALYSIS
NUMERICAL SOLUTION
REINFORCED CONCRETE
REINFORCED MATERIALS
STEELS
TRANSITION ELEMENT ALLOYS