Impact Behavior of Recycled Aggregate Concrete Based on Split Hopkinson Pressure Bar Tests

A Note on Data Processing in the Split Hopkinson Pressure Bar Tests

netic energy in SHPB test, Davies and Hunter recommended an optimal length/ diameter ratio of specimen in order to provide minimal correction or error due to inertial effects as well as to minimize the problem due to interfacial friction^.^ Gong et al. used FFT technique to rehe Split Hopkinson Pressure Bar (SHPB), or Kolsky’s apparatus, has been widely used for the study of dynamic behaviors o...

Using the split Hopkinson pressure bar to validate material models.

This paper gives a discussion of the use of the split-Hopkinson bar with particular reference to the requirements of materials modelling at QinetiQ. This is to deploy validated material models for numerical simulations that are physically based and have as little characterization overhead as possible. In order to have confidence that the models have a wide range of applicability, this means, at...

Stress Equilibrium in the Split Hopkinson Pressure Bar Test

The compressive split Hopkinson pressure bar (SHPB) technique allows the stresses on each end of the specimen to be measured individually. Results are presented showing a large difference between these end pressures, depending on specimen length and loading rate. The mechanisms responsible are shown to be a combination of inertial forces and non-uniform deformation due to wave propagation. Impl...

Advancements in the Split Hopkinson Bar Test

Effect of structurally-induced lateral confinement on split Hopkinson pressure bar test specimens of concrete-like materials

In dynamic testing of concrete-like materials, there is a need in distinguishing structural effects from genuine strainrate effects. In this paper, this generic problem is studied by numerical simulations based on a phenomenological material model available in the commercial finite element (FE) code Abaqus. The numerical results show that the increase of the dynamic increase factor (DIF) with t...