Perforation Dynamics of Projectiles

We develop a new method to calculate impact forces of a thin target and of a projectile at normal perforation of a cone-nose rigid projectile by means of a 3-dimensional finite-element method (FEM) code DYNA 3 D. We use a new fracture condition (strain fracture condition that depends on pressure) an...

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Bibliographic Details
Published inTransactions of the Japan Society of Mechanical Engineers Series A Vol. 58; no. 555; pp. 2212 - 2218
Main Author ASADA, Kazuo
Format Journal Article
LanguageJapanese
Published The Japan Society of Mechanical Engineers 25.11.1992
Subjects
FEM Code
Forward Ballistic Experiment
Fracture Condition
Impact Force
Normal Perforation
Projectile
Reverse Ballistic Experiment
Target
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Summary:We develop a new method to calculate impact forces of a thin target and of a projectile at normal perforation of a cone-nose rigid projectile by means of a 3-dimensional finite-element method (FEM) code DYNA 3 D. We use a new fracture condition (strain fracture condition that depends on pressure) and a small hole target model at perforation calculation. Impact forces calculated by the FEM code are compared with impact forces of 2-type experiments ; target force in a forward ballistic experiment (Yoshida) and projectile force in a reverse ballistic experiment (Arajs). Target forces by calculation have a high frequency mode and have good maximum values compared with Yoshida's experimental forces. Futhermore, projectile forces determined by calculation are in good agreement with Arajs's experimental forces.
ISSN:0387-5008
1884-8338
DOI:10.1299/kikaia.58.2212