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EXPERIMENTAL STUDY AND NUMERICAL ANALYSIS OF DYNAMIC FRACTURE IN DUCTILE SOLIDS

Zheng Jian;Wang Zeping, LNM, Institute of Mechanics, Chinese Academy of Sciences  
Spall tests in pure copper and LY12 aluminum alloy are performed. The mechanism of the nucleation, growth and coalescence of micro-voids is observed by means of microscopic observation of the recovered specimens. The model presented in Ref. [4] is incorporated in a hydrodynamic one-dimensional finite-difference computer code to simulate the processes of spallation in pure copper and LY12 aluminum alloy specimens. This model can satisfactorily describe the processes of spallation.
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