Finite Element Modeling of Crack Band Propagation
| Autor: | Zdenek P. Baiant, Luigi Cedolin |
|---|---|
| Rok vydání: | 1983 |
| Předmět: |
Work (thermodynamics)
Materials science business.industry Mechanical Engineering Skew Building and Construction Structural engineering Physics::Classical Physics Finite element method Mechanics of Materials Orientation (geometry) Ultimate tensile strength Fracture (geology) General Materials Science Polygon mesh business Asymptotic expansion Civil and Structural Engineering |
| Zdroj: | Journal of Structural Engineering. 109:69-92 |
| ISSN: | 1943-541X 0733-9445 |
| DOI: | 10.1061/(asce)0733-9445(1983)109:1(69) |
| Popis: | The propagation of blunt smeared crack bands through a finite element mesh in plain or reinforced concrete. structures is studied. A previous work, which demonstrated (approximate) independence of results from the chosen mesh size, is extended by demonstrating the same for the changes in mesh orientation with regard to the crack band and to the steel bars. Bond slip of bars must also be considered. This is satisfactorily accomplished by extending the previously proposed concept of free bond slip length for the cases of skew meshes and skew bars. In the presence of reinforcement, the previous formula for the equivalent strength giving approximately the same results as the energy criterion must be expanded by a term which corresponds to the third term of the asymptotic expansion of displacements near the tip of a sharp crack. The energy criterion is shown to give consistent results for different types of fracture specimens. However, the equivalent strength calibrated for the center‐cracked tensile specimen ... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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