Towards a smoothed particle hydrodynamics algorithm for shocks through layered materials

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Abstract

Hypervelocity impacts (HVIs) are collisions at velocities greater than the target object’s speed of sound. Such impacts produce pressure waves that generate sharp and sudden changes in the density of the materials. These are propagated as shock waves. Previous computational research has given insight into this shock loading for the case of homogeneous materials. Shock-wave propagation through materials with discontinuous density distribution has not been considered in depth yet. Smoothed Particle Hydrodynamics (SPH) is a numerical technique, which has been extensively used for the simulation of HVIs. It is especially suitable for this purpose as it describes both the solid and fluid-like behavior effectively as well as the violent breakup of the material under impact. In previous studies on SPH, impact loading of composite materials was modeled by homogenization of the material, or under assumption of being a so-called functionally graded material (FGM). Both these models neglect the reflection-transmission effects on the interface between materials of different density. In this paper the shock loading of layered materials is studied. A modification to the standard SPH method is developed and tested, that incorporates materials with purely discontinuous density distribution. The developed method’s performance at simple shock loading cases is investigated; reflection-transmission patterns of shock-waves through layered materials are discussed, along with a parametric study of the governing parameters.
Original languageEnglish
Title of host publication2013 ASME Pressure Vessels & Piping Conference (Paris, France, July 14-18, 2013)
Place of PublicationNew York
PublisherAmerican Society of Mechanical Engineers
PagesPVP2013-97345-1/9
ISBN (Print)978-0-7918-5568-3
DOIs
Publication statusPublished - 2013
Event2013 ASME Pressure Vessels and Piping Conference (PVP 2013)
- Paris Marriott Rive Gauche Hotel & Conference Center, Paris, France
Duration: 14 Jul 201318 Jul 2013
http://www.asmeconferences.org/pvp2013/

Conference

Conference2013 ASME Pressure Vessels and Piping Conference (PVP 2013)
Abbreviated titlePVP 2013
Country/TerritoryFrance
CityParis
Period14/07/1318/07/13
Other
Internet address

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