Large-scale fluid-structure interaction simulation of viscoplastic and fracturing thin shells subjected to shocks and detonations

Cirak, Fehmi, Deiterding, Ralf and Mauch, Sean P. (2007) Large-scale fluid-structure interaction simulation of viscoplastic and fracturing thin shells subjected to shocks and detonations. [in special issue: Fourth MIT Conference on Computational Fluid and Solid Mechanics] Computers & Structures, 85 (11-14), 1049-1065. (doi:10.1016/j.compstruc.2006.11.014).

Record type: Article

Abstract

The fluid–structure interaction simulation of shock- and detonation-loaded thin-walled structures requires numerical methods that can cope with large deformations as well as local topology changes. We present a robust level-set-based approach that integrates a Lagrangian thin-shell finite element solver with fracture and fragmentation capabilities and an Eulerian Cartesian fluid solver with optional dynamic mesh adaptation. As computational applications, we consider the plastic deformation of a copper plate impacted by a strong piston-induced pressure wave inside a water pipe; and the induction of large plastic deformations and rupture of thin aluminum tubes due to the passage of ethylene–oxygen detonations.

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