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Numerical Modeling of Contact Instability between Colliding Metal Plates Based on the Baer–Nunziato Model.

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Title: Numerical Modeling of Contact Instability between Colliding Metal Plates Based on the Baer–Nunziato Model.
Authors: Fortova, S. V.1 (AUTHOR) sfortova@mail.ru, Chuprov, P. A.1 (AUTHOR) petchu@mail.ru, Vasil'ev, A. E.1 (AUTHOR) vasilev.ae@phystech.edu
Source: Computational Mathematics & Mathematical Physics. Jun2026, Vol. 66 Issue 6, p1082-1095. 14p.
Subjects: Shock waves, Explosive welding, Hydrodynamics, Multiphase flow, Computer simulation
Abstract: The high-speed collision of metal plates with a disturbance in the shape of their interface is numerically modeled. In the course of the plate interaction, an initially small disturbance increases and its shape changes. This phenomenon is known from experimental studies and is widely encountered in explosion welding, which motivates interest in studying its characteristics. Numerical modeling is performed in the hydrodynamic approximation, since the initial stage of the process is addressed, in which the stresses arising in the plates significantly exceed the yield strength of the metals. The problem is studied numerically using a multiphase hydrodynamic model based on the system of Baer–Nunziato equations. The paper confirms the existence of mechanisms for the growth of interface disturbances based on the complex interaction of material flows generated by shock wave processes. [ABSTRACT FROM AUTHOR]
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Database: Engineering Source
Description
Abstract:The high-speed collision of metal plates with a disturbance in the shape of their interface is numerically modeled. In the course of the plate interaction, an initially small disturbance increases and its shape changes. This phenomenon is known from experimental studies and is widely encountered in explosion welding, which motivates interest in studying its characteristics. Numerical modeling is performed in the hydrodynamic approximation, since the initial stage of the process is addressed, in which the stresses arising in the plates significantly exceed the yield strength of the metals. The problem is studied numerically using a multiphase hydrodynamic model based on the system of Baer–Nunziato equations. The paper confirms the existence of mechanisms for the growth of interface disturbances based on the complex interaction of material flows generated by shock wave processes. [ABSTRACT FROM AUTHOR]
ISSN:09655425
DOI:10.1134/S0965542526700430