Engineering model for impact of blunt projectiles on metallic sheets
conference paper
At TNO mind sized engineering models are created for specific penetration conditions. The models are energy based and calculate the energy absorbed by target deformation (strain energy) and displacement (kinetic energy). The input parameters are restricted to basic target material properties (density, Young’s modulus), impact velocity, mass and the dimensions of projectile and target. In this paper an engineering model for impact of blunt projectiles on metallic sheets is presented. During blunt projectile impact a shock phase precedes the global deformation of the target. It results in increasing membrane and shear deformation of the target, while the projectile deforms and is retarded. These effects are included in the model. When the conditions for shear- and/or tensile failure of the target material are met, the target fails and is penetrated. Calculation results on projectile deformation and penetration behavior are compared with experimental results.
Topics
TNO Identifier
515585
Source title
28th International Symposium on Ballistics, Atlanta, GA, USA, 22-26 September 2014
Collation
11 p.
Pages
1276-1286
Files
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