Wave Dispersion and Attenuation in Viscoelastic Split Hopkinson Pressure Bar | Zendy

Zhijun Cheng | Zendy; Jeff R. Crandall | Zendy; W. D. Pilkey | Zendy

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Wave Dispersion and Attenuation in Viscoelastic Split Hopkinson Pressure Bar

Author(s) -

Zhijun Cheng,

Jeff R. Crandall,

W. D. Pilkey

Publication year - 1998

Publication title -

shock and vibration

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.418

H-Index - 45

eISSN - 1875-9203

pISSN - 1070-9622

DOI - 10.1155/1998/906291

Subject(s) - viscoelasticity , attenuation , split hopkinson pressure bar , bar (unit) , dispersion (optics) , materials science , acoustics , mechanics , wave propagation , strain rate , optics , composite material , physics , meteorology

A viscoelastic split Hopkinson pressure bar intended for testing soft materials with low acoustic impedance is studied. Using one-dimensional linear viscoelastic wave propagation theory, the basic equations have been established for the determination of the stress—strain—strain rate relationship for the tested material. A method, based on the spectral analysis of wave motion and using measured wave signals along the split Hopkinson pressure bar, is developed for the correction of the dispersion and attenuation of viscoelastic waves. Computational simulations are performed to show the feasibility of the method

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