Fragment scattering of concrete specimen subjected to high speed loading and simulation using distinct element method

This paper proposes an experimental approaches on the fragment scattering behavior of concrete specimen subjected to about 2.0m/s velocity high speed loading, and analytical approaches on these behavior by using 3-dimentional distinct element method. First, the high speed loading experiment are carried out to the concrete specimens, which have different aggregate size and different water cement ratio. The fragment characteristics, i.e., shape, mass, and velocity are measured, and the kinetic energy conversion ratio is discussed. Secondly, the applicability and some modification of the distinct element method for this phenomena are discussed.