Results 31 to 40 of about 594,528 (216)

Polypropylene foam behaviour under dynamic loadings: Strain rate, density and microstructure effects [PDF]

, 2009
Expanded polypropylene foams (EPP) can be used to absorb shock energy. The performance of these foams has to be studied as a function of several parameters such as density, microstructure and also the strain rate imposed during dynamic loading.
LATAILLADE, Jean-Luc, BOUIX, Rémy, VIOT, Philippe   +2 more
core   +1 more source

Development of “Dropkinson” Bar for Intermediate Strain-rate Testing

EPJ Web of Conferences, 2018
A new apparatus – “Dropkinson Bar” – has been successfully developed for material property characterization at intermediate strain rates. This Dropkinson bar combines a drop table and a Hopkinson bar.
Song Bo, Sanborn Brett, Heister Jack, Everett Randy, Martinez Thomas, Groves Gary, Johnson Evan, Kenney Dennis, Knight Marlene, Spletzer Matthew   +9 more
doaj   +1 more source

Manual of GUI Program Governing ABAQUS Simulations of Bar Impact Test for Calibrating Bar Properties, Measured Strain, and Impact Velocity

Data, 2023
Bar impact instruments, such as the (split) Hopkinson bars and direct impact Hopkinson bars, measure blast/impact waves or mechanical properties of materials at high strain rates.
Hyunho Shin
doaj   +1 more source

gauge_factor.py - A Python algorithm for calculating the gauge factor of the input bar for split-Hopkinson pressure bar experiments.

, 2023
DESCRIPTION: Uses the recorded signals from the strain gauges of the input bar to calculate the gauge factor for split-Hopkinson pressure bar experiments. PYTHON SOFTWARE: Van Lerberghe, A., Li, K. S. O. (2023) gauge_factor.py - A Python algorithm for
Kin Shing Oswald Li (9687425), Arthur Van Lerberghe (9687044)   +1 more
core   +1 more source

The Direct Impact Method for Studying Dynamic Behavior of ‎Viscoplastic Materials [PDF]

Journal of Applied and Computational Mechanics, 2022
This work is devoted to the direct impact method for determining the deformation diagrams of viscoplastic materials at high strain rates. As the conventional Split Hopkinson Pressure Bar method, the direct impact method is based on the measuring bar ...
Artem Basalin, Aleksandr Konstantinov, Leonid Igumnov, Alexandr Belov, Anatoliy Bragov, Victor Eremeev   +5 more
doaj   +1 more source

First application of the 3D-MHB on dynamic compressive behavior of UHPC

EPJ Web of Conferences, 2015
In order to study the dynamic behaviour of material in confined conditions a new machine was conceived and called 3D-Modified Hopkinson Bar (3D-MHB). It is a Modified Hopkinson Bar apparatus designed to apply dynamic loading in materials having a tri ...
Cadoni Ezio, Dotta Matteo, Forni Daniele, Riganti Gianmario, Albertini Carlo   +4 more
doaj   +1 more source

Mechanical Response of HPFRCC in Tension and Compression at High Strain Rate and High Temperature

Engineering Transactions, 2014
The mechanical response of High Performance Fibre-Reinforced Cementitious Composite (HPFRCC) has been analyzed at high strain rates and high temperature.
E. CADONI, A. M. BRAGOV, A. CAVERZAN, M. DI PRISCO, A. KONSTANTINOV, A. LOMUNOV   +5 more
doaj   +1 more source

Templates for Calibrating Sound Speed and Poisson's Ratio of (Split) Hopkinson Bar via Dispersion Correction of Elastic Wave

, 2022
The Excel and Matlab templates herein can be used for calibrating the sound speed and Poisson’s ratio of (split) Hopkinson bar and direct impact Hopkinson bar via the iterative dispersion correction of an elastic wave.
Hyunho Shin
core   +1 more source

Large scale high strain-rate tests of concrete

EPJ Web of Conferences, 2012
This work presents the stages of development of some innovative equipment, based on Hopkinson bar techniques, for performing large scale dynamic tests of concrete specimens.
Kiefer R., Magonette G., Viaccoz B., Solomos G., Peroni M.   +4 more
doaj   +1 more source

A dynamic calibration method of free-field pressure sensor based on Hopkinson bar

AIP Advances, 2020
This paper presents a dynamic calibration method for the dynamic sensitivity coefficient of a free-field pressure sensor working in liquid. In this method, an oil-filled auxiliary tool has been designed and the free-field pressure sensor sealed in the ...
Wen Liang, Rong Chen, Yuwu Zhang
doaj   +1 more source