On the response of rubbers at high strain rates. Page: 3 of 149
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On the Response of
Rubbers at High Strain Rates
Johnathan Greenberg Niemczura
University of Texas-Austin
Campus Executive Fellow
Sandia National Laboratories
Computational Structural Mechanics and Applications
P.O. Box 5800
Albuquerque, New Mexico 87185-0372
In this report, we examine the propagation of tensile waves of finite deformation in
rubbers through experiments and analysis. Attention is focused on the propagation of
one-dimensional dispersive and shock waves in strips of latex and nitrile rubber.
Tensile wave propagation experiments were conducted at high strain-rates by holding
one end fixed and displacing the other end at a constant velocity. A high-speed video
camera was used to monitor the motion and to determine the evolution of strain and
particle velocity in the rubber strips. Analysis of the response through the theory of
finite waves and quantitative matching between the experimental observations and
analytical predictions was used to determine an appropriate instantaneous elastic
response for the rubbers. This analysis also yields the tensile shock adiabat for rubber.
Dispersive waves as well as shock waves are also observed in free-retraction
experiments; these are used to quantify hysteretic effects in rubber.
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Niemczura, Johnathan Greenberg (University of Texas-Austin). On the response of rubbers at high strain rates., report, February 1, 2010; United States. (digital.library.unt.edu/ark:/67531/metadc926871/m1/3/: accessed October 23, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.