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Archive of Applied Mechanics

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04-07-2018 | Original

Interface instability of an inelastic normal collision

Authors: P. F. Pelz, M. M. G. Kuhr

Published in: Archive of Applied Mechanics | Issue 11/2018

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Abstract

The interface of two normal colliding media is always unstable. This is true even for both media showing the same density. The common precondition for a Rayleigh–Taylor instability “the lighter medium pushes the heavier” is generalised for the case that two media experience different accelerations in a short period after colliding. The arithmetic average of the accelerations determines the evolution of the wavy interface shape. The theory is applicable for various technologies of impact welding, such as explosion and magnetic pulse welding.

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Title: Interface instability of an inelastic normal collision
Authors: P. F. Pelz
M. M. G. Kuhr
Publication date: 04-07-2018
Publisher: Springer Berlin Heidelberg
Published in: Archive of Applied Mechanics / Issue 11/2018
Print ISSN: 0939-1533
Electronic ISSN: 1432-0681
DOI: https://doi.org/10.1007/s00419-018-1420-8

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