Abstract
To solve the deformation problem of Gelatin Bird Projectiles (GBPs) in impact tests, the present study considers enhancement mechanisms for supporting GBPs internally. The engineering motion equation of the GBP is established and a finite-element model of an unsupported cylindrical GBP is established. Cruciform and cylindrical support structures are designed, and their reinforcement mechanisms are analyzed. The internal supproted GBPs are validated that they improve the acceleration and separation of the GBP. The support structures are effective at blocking and alleviating the propagation of elastoplastic waves in the interior of the GBP, and enable them resist deformation during acceleration process.
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