Original Articles: 2014 Vol: 6 Issue: 7
The study on steel fiber reinforced concrete under dynamic compression by damage mechanics method
Abstract
Generally, steel fiber reinforced concrete (SFRC) during the few past decades has been found to possess many excellent dynamic performances such as high resistance to explosion and penetration, which has now attained acknowledgment in numerous engineering applications since it has several advantages. The randomly distributed short fibers can be utilized to improve the physical properties of reinforced concrete structures due to the resistance from crack initiation to crack propagation. Most of the steel fiber reinforced concrete research just to solve a specific problem, and little information available concerning the structure performance degradation of SFRC in certain circumstances. In current paper, a formulation to model the mechanical behavior of high performance fiber reinforced cement composites with arbitrarily oriented short fibers. The formulation can be considered as a two scale approach, in which the macroscopic model, at the structural level, takes into account the microstructural phenomenon associated with the fiber-matrix interface bond/slip process. Based on ANASYS software platform, the numerical study on SFRC durability by damage mechanics method is carried out. Furthermore, waveforms from dynamic compression and dynamic stress-strain curves for SFRC under different strain rate will be analyzed. Numerical results can provide some reliable basis for SFRC durability design.