ENERGY ABSORPTION CHARACTERISTICS OF ALUMINUM PLATES SUBJECTED TO PROJECTILE IMPACT
AbstractTHIS PAPER PRESENTS A DETAILED INVESTIGATION OF ENERGY ABSORPTION CHARACTERISTICS OF THIN SINGLE AS WELL AS LAYERED IN-CONTACT ALUMINUM TARGET PLATES OF DIFFERENT THICKNESSES IMPACTED BY BLUNT, OGIVE AND HEMISPHERICAL NOSED STEEL PROJECTILES. INFLUENCE OF VARIOUS PARAMETERSA AFFECTING THE ENERGY ABSORPTION CAPACITY OF THE TARGET, SUCH AS KINETIC ENERGY OF THE IMPACTING PROJECTILE AND ITS NOSE SHAPE, CONÂ¯GURATION OF THE TARGET PLATE, ITS MODE OF FAILURE AS WELL AS THICKNESS OF THE TARGET PLATE WAS STUDIED. THE EXTENT OF ENERGY ABSORPTION OF THE TARGET PLATE WAS FOUND TO BE HIGHLY INFLUENCED BY ITS FAILURE MECHANISM. IT OFFERED HIGHER PERFORATION RESISTANCE WHEN THE FAILURE OCCURRED THROUGH ''BENDING'' AND ''TENSILE STRETCHING'' THAN WHEN IT FAILED THROUGH 'SHEAR PLUGGING'. EFFECT OF TARGET CONFIGURATION WAS STUDIED BY VARYING THE NUMBER OF LAYERS AND INDIVIDUAL PLATE THICKNESS KEEPING A GIVEN CONSTANT OVERALL TARGET THICKNESS. THE ABSORBED ENERGY WAS FOUND TO DECREASE WITH AN INCREASE IN THE NUMBER OF LAYERS, WHICH REVEALED THAT THE MONOLITHIC TARGET PLATE OFFERED HIGHEST RESISTANCE AGAINST PROJECTILE PERFORATION. THE EXPERIMENTAL FINDINGS WERE ALSO VERIFIED WITH THE NUMERICAL SIMULATIONS CARRIED OUT USING FINITE ELEMENT CODE ABAQUS. ENERGY ABSORPTION CAPACITY OF THE TARGET PLATES OBTAINED FROM THE NUMERICAL ANALYSIS WAS FOUND IN GOOD AGREEMENT WITH THE EXPERIMENTAL OBSERVATIONS.
Authors who publish with this journal agree to the following terms:
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License [CC BY] that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).