Study of expanding fracture behavior of a copper cylinder under hollow explosive loading.
ORAL
Abstract
We study the expanding fracture behavior of a copper cylinder under hollow explosive loading. Besides the tensile fracture along the circumferential direction, spall fracture along radial direction occurs, which is evidenced by the step-like behavior with three velocity jumps in the free surface velocity curves and microstructure study of the soft recovered fragments. After considering the spall fracture mechanism, a numerical simulation is carried our and the result shows good agreement with the experiment data.
*This work was supported by the National Natural Science Foundation of China (Grants No. 11172279)
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