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Title of Article

WAVE DISPERSION IN SPLIT HOPKINSON PRESSURE BARS IN DYNAMIC TESTING OF BRITTLE MATERIALS


Issue
6
Date
 2011

Article type
 scientific article
UDC
539.3
Pages
158-162
Keywords
wave dispersion, numerical simulation, Kolsky method, brittle materials


Authors
Bragov Anatoliy Mikhaylovich
NII mekhaniki Nizhegorodskogo gosuniversiteta im. N.I. Lobachevskogo

Konstantinov Aleksandr Yurevich
NII mekhaniki Nizhegorodskogo gosuniversiteta im. N.I. Lobachevskogo

Medvedkina Marina Valentinovna
NII mekhaniki Nizhegorodskogo gosuniversiteta im. N.I. Lobachevskogo


Abstract
Numerical simulation results are given of dynamic tensile testing of brittle materials using the Kolsky method and the software package LS-DYNA. An algorithm and a numerical technique to restore true power and temporal characteristics of the fracture process of a brittle material sample are proposed. A comparison is made of the pulse calculated with the account of the dispersion correction and the pulse obtained by LS-DYNA numerical simulation.

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