Modelling of spall damage in ductile materials and its application to the simulation of the plate impact on copper

Feng Guo Zhang; Hong Qiang Zhou; Jun Hu; Jian Li Shao; Guang Ca Zhang; Tao Hong; Bin He

doi:10.1088/1674-1056/21/9/094601

Modelling of spall damage in ductile materials and its application to the simulation of the plate impact on copper

Feng Guo Zhang^*, Hong Qiang Zhou, Jun Hu, Jian Li Shao, Guang Ca Zhang, Tao Hong, Bin He

^*Corresponding author for this work

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14 Citations (Scopus)

Abstract

A statistical model of dynamic spall damage due to void nucleation and growth is proposed for ductile materials under intense loading, which takes into account inertia, the elastic-plastic effect, and initial void size. To some extent, void interaction could be accounted for in this approach. Based on this model, the simulation of spall experiments for copper is performed by using the Lagrangian finite element method. The simulation results are in good agreement with experimental data for the free surface velocity profile, stress record behind copper target, final porosity, and void concentrations across the target. The influence of elastic-plastic effect upon the damage evolution is explored. The correlation between the damage evolution and the history of the stress near the spall plane is also analyzed.

Original language	English
Article number	094601
Journal	Chinese Physics B
Volume	21
Issue number	9
DOIs	https://doi.org/10.1088/1674-1056/21/9/094601
Publication status	Published - Sept 2012
Externally published	Yes

Keywords

ductile materials
free surface velocity
plate impact
spall damage

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10.1088/1674-1056/21/9/094601

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abstract = "A statistical model of dynamic spall damage due to void nucleation and growth is proposed for ductile materials under intense loading, which takes into account inertia, the elastic-plastic effect, and initial void size. To some extent, void interaction could be accounted for in this approach. Based on this model, the simulation of spall experiments for copper is performed by using the Lagrangian finite element method. The simulation results are in good agreement with experimental data for the free surface velocity profile, stress record behind copper target, final porosity, and void concentrations across the target. The influence of elastic-plastic effect upon the damage evolution is explored. The correlation between the damage evolution and the history of the stress near the spall plane is also analyzed.",

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AU - Zhang, Feng Guo

AU - Zhou, Hong Qiang

AU - Hu, Jun

AU - Shao, Jian Li

AU - Zhang, Guang Ca

AU - Hong, Tao

AU - He, Bin

PY - 2012/9

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AB - A statistical model of dynamic spall damage due to void nucleation and growth is proposed for ductile materials under intense loading, which takes into account inertia, the elastic-plastic effect, and initial void size. To some extent, void interaction could be accounted for in this approach. Based on this model, the simulation of spall experiments for copper is performed by using the Lagrangian finite element method. The simulation results are in good agreement with experimental data for the free surface velocity profile, stress record behind copper target, final porosity, and void concentrations across the target. The influence of elastic-plastic effect upon the damage evolution is explored. The correlation between the damage evolution and the history of the stress near the spall plane is also analyzed.

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Modelling of spall damage in ductile materials and its application to the simulation of the plate impact on copper

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Keywords

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