Stress Wave in Gelatin from Temporary Cavity

Gen Lin Mo; Zhi Lin Wu

doi:10.4028/www.scientific.net/AMM.423-426.347

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 423-426Stress Wave in Gelatin from Temporary Cavity

Stress Wave in Gelatin from Temporary Cavity

Abstract:

To study the injury mechanism of stress wave from temporary cavity in gelatin, a stress wave propagation model is established. Based on experimental phenomena, gelatin around the trajectory is divided into fail region and elastic region. In the fail region, gelatin is considered to be incompressible and loop stress is zero. Gelatin in the elastic region is assumed to be plane-strain. Moving equations in the two regions are built. A 4.8 mm steel sphere is fired into gelatin at 720 m/s. Displacements of the temporary cavity are obtained from the experiment. By solving the moving equations with boundary conditions, amplitude of cavity pressure, radial stress distribution in gelatin are obtained. The theoretical results can be used to explain stress waves produced by temporary cavity.

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Periodical:

Applied Mechanics and Materials (Volumes 423-426)

Pages:

347-350

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.423-426.347

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Online since:

September 2013

Authors:

Gen Lin Mo, Zhi Lin Wu

Keywords:

Gelatin, Plane Strain, Stress Wave, Temporary Cavity

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