飛翔体の貫通解析

概要

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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.
社団法人日本機械学会の論文
1992-11-25