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Wave propagation in ballistic gelatine
Srinivasan S Naarayan1, Ghatu Subhash1
1Mechanical and Aerospace Engineering, University of Florida, Gainesville, FL 32611, USA.
Journal of the Mechanical Behavior of Biomedical Materials
|February 1, 2017
Summary
This study models wave propagation in ballistic gelatine using hyperelastic models. The findings accurately predict how wave velocity changes with gelatine prestress, validated by experiments.
Area of Science:
- Materials Science
- Solid Mechanics
- Wave Propagation Physics
Background:
- Ballistic gelatine is a crucial material for impact and penetration studies.
- Understanding wave propagation in soft materials is essential for dynamic analysis.
Purpose of the Study:
- To investigate wave propagation characteristics in ballistic gelatine.
- To develop and validate a hyperelastic constitutive model for gelatine under dynamic loading.
Main Methods:
- Utilized high-speed digital photography to capture transient deformations.
- Employed strain-rate-dependent Mooney-Rivlin parameters for constitutive modeling.
- Performed finite element analysis (FEA) to simulate wave propagation.
Main Results:
- Derived wave propagation velocity as a function of gelatine prestress and stretch.
- The developed model effectively captured experimentally observed wave propagation behavior.
- Mooney-Rivlin parameters were determined by matching stress-strain responses across various strain rates.
Conclusions:
- The study successfully models wave propagation in ballistic gelatine.
- The validated hyperelastic model provides a robust tool for predicting dynamic responses in gelatine.
- Findings contribute to a better understanding of material behavior under high-strain-rate impact conditions.
Keywords:
Ballistic gelatinDynamic responseMooney-Rivlin modelNeo-Hookean modelPolymer Hopkinson barWave propagationMore Related Videos
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