On the Fluidic Response of Structures in Hypervelocity Impacts

Abstract

In a hypervelocity impact (HVI) event, the shock pressures exceed the strength of common aerospace materials, and brief shockinduced temperature rises cause melting and vaporization of most structural bodies. Under these extreme conditions, the failure and deformation of solids can resemble fluid flow. By using meshless Lagrangian models in an explicit computational framework, this work identifies analogous fluidic interactions and further quantifies the role of shear and inertial forces in HVIs.