Abstract
The flexural failure of plain concrete beam occurs along with development of flexural crack on beam. In this paper by using ABAQUS, mechanism failure of plain concrete beam under three steps have been simulated. The cracking moment has been analytically calculated and applied on the both sides of the fixed beam, and flexural crack has been simulated on beam. Displacement, von Mises, load reaction, displacementcrack length, von Mises-crack length and von Mises-displacement of beams have been graphical depicted. Results indicated that, the flexural crack governs beam mechanism failure and its effects on beam resistance failure. It has been found that the flexural crack in initial stage it developed slowly and changes to be fast at the final stage of collapsing beam due to reduction of the flexural resistance of beam. Increasing mechanical properties of concrete, collapse displacement is reduced.
Highlights
The fracture mechanics concerns the crack development in materials during load applying in any directions
The tensile strength has directly related to the fracture resistance and the stress was distributed according to length of crack
It has been observed that the crack develops with stress transfer and effect on stress, von Mises, load reaction, displacement and length of crack
Summary
The fracture mechanics concerns the crack development in materials during load applying in any directions. For brittle solids material, such as plain concrete, it leads to rapid crack development if applied load is higher than fracture resistance and toughness, subsequently resulting in a failure of the structural elements and/or whole structure. The ABAQUS has been used to characterize flexural failure mechanism of beam subjected to the cracking moment and to understand stress transfer in plain concrete during crack development.
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