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Dynamic Characterization of Soft Materials

  • Weinong W. Chen
  • Bo Song
Chapter

Abstract

Soft materials, such as elastomers, foams, gels, and biological tissues, possess low stiffness, yield strength, and wave speeds. These characteristics pose challenges in experiment design to obtain the dynamic properties of soft materials at high rates of loading. The low wave speeds delay the stress equilibrium in the specimen. Low strength and stiffness require highly sensitive load detection system. Low strength also makes inertia effects significant. This chapter illustrates these challenges as they are encountered in high-rate experiments using Kolsky bars. Experimental solutions designed to overcome these difficulties are then introduced and demonstrated.

Keywords

Soft materials High strain-rates Split Hopkinson bar Pulse shaping Dynamic equilibrium High-rate responses 

Notes

Acknowledgements

Sandia is a multiprogram laboratory operated by Sandia Corporation, a Lockheed Martin Company, for the United States Department of Energy under Contract DE-ACO4–94AL85000.

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Copyright information

© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  • Weinong W. Chen
    • 1
  • Bo Song
    • 2
  1. 1.Purdue UniversityWest LafayetteUSA
  2. 2.Sandia National LaboratoriesLivermoreUSA

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