Evolution and calibration of a numerical model for modelling of hybrid-fibre ECC panels under high-velocity impact

A material model for hybrid-fibre engineered cementitious composites (ECC) under impact loading is developed and calibrated in this paper, and size effect, appropriate erosion criteria and strain rate effect are investigated and accounted for in the model. Employing the new material model, a numerical model and modelling technique are developed to model the impact behaviour and impact process of hybrid-fibre ECC panels using LS-DYNA commercial software. The material model and the numerical model developed in this paper are validated against the experimental results.

► An appropriate material model for engineered cementitous composite (ECC) materials under dynamic loading is established. ► The size effect and strain rate on the dynamic material behaviour are investigated. ► Appropriate erosion criteria for impact analysis of hybrid-fibre ECC panels using LS-DYNA are established. ► Numerical simulation of high velocity impact behaviour of a hybrid-fibre ECC slab is carried out. ► The numerical simulation process and models are validated and demonstrated to be correct and effective.