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Computational Mechanics
Erschienen in: Computational Mechanics 3/2017

15.05.2017 | Original Paper

A density-adaptive SPH method with kernel gradient correction for modeling explosive welding

verfasst von: M. B. Liu, Z. L. Zhang, D. L. Feng

Erschienen in: Computational Mechanics | Ausgabe 3/2017

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Abstract

Explosive welding involves processes like the detonation of explosive, impact of metal structures and strong fluid–structure interaction, while the whole process of explosive welding has not been well modeled before. In this paper, a novel smoothed particle hydrodynamics (SPH) model is developed to simulate explosive welding. In the SPH model, a kernel gradient correction algorithm is used to achieve better computational accuracy. A density adapting technique which can effectively treat large density ratio is also proposed. The developed SPH model is firstly validated by simulating a benchmark problem of one-dimensional TNT detonation and an impact welding problem. The SPH model is then successfully applied to simulate the whole process of explosive welding. It is demonstrated that the presented SPH method can capture typical physics in explosive welding including explosion wave, welding surface morphology, jet flow and acceleration of the flyer plate. The welding angle obtained from the SPH simulation agrees well with that from a kinematic analysis.
Vorheriger Artikel Consistent treatment and automation of the incremental Mori–Tanaka scheme for elasto-plastic composites

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Metadaten
Titel
A density-adaptive SPH method with kernel gradient correction for modeling explosive welding
verfasst von
M. B. Liu
Z. L. Zhang
D. L. Feng
Publikationsdatum
15.05.2017
Verlag
Springer Berlin Heidelberg
Erschienen in
Computational Mechanics / Ausgabe 3/2017
Print ISSN: 0178-7675
Elektronische ISSN: 1432-0924
DOI
https://doi.org/10.1007/s00466-017-1420-5

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