FE analysis of ultra high performance fiber reinforced concrete

FEM in combination with an appropriate material model may serve as a suitable tool to analyze the structural performance of UHPFRC. Some reported constitutive models considering the effect of steel fibers are installed into the 3D FE program. The comparisons between the numerical and the experimental results are performed to confirm the applicability of the proposed models from the view point of structural performance. Moreover, a sensibility analysis is conducted to evaluate the effect of the material parameters on shear behavior of beams with UHPFRC. A new concept for a combination of the constitutive models in FEM is introduced in the present study. In the analysis, the constitutive laws are varied for different fiber directions in a numerical specimen following the phenomenal fact that orientation number differs for different considering directions in 3D space. Finally, the advantage of simulation by the proposed technique compared with current FE methods and test results are demonstrated on the structural level.