Impact Analysis of Ultra High Performance Fiber Reinforced Concrete using Finite Element Analysis

Abstract

With the advancement in technology, UHPFRC is invented which includes exceptionally high mechanical properties (stress, strain, toughness and energy absorption capacity) and durability properties (permeability, creep, fatigue and corrosion resistance). Therefore, it attracts the researchers to investigate it in depth. Due to the difficulty in performing the impact test over UHPFRC, finite element study is made with the help of a commercially available FEM software ANSYS. An attempt has been made to verify the finite element results with the experimental results obtained in the laboratory and then obtain various other critical parameters (toughness, energy absorption capacity, failure pattern, crack propagation) through ANSYS only. There is not any recommended procedure or standard code available to perform the impact test over concrete, because of which every other researcher have used different shape, size, and geometry of fiber and concrete specimen which result in variability of results obtained through experiments. Therefore, the model is drawn in “ANSYS workbench” and other properties are assigned in “ANSYS mechanical” along with the assignment of “8 nodded SOLID65” element, and “Hydrodynamic code” solver from LS-DYNA is used for obtaining the post processing results instead of the default “ANSYS AUTODYN” solver in ANSYS.