Experimental Research on Fracture of Metal Case under Loading at High Strain Rate

doi:10.3969/j.issn.1000-1093.2016.01.012

Abstract

Abstract: A new Dopple detection system (DPS) array and a high-speed framing camera are used to test the surface dynamics and local velocity profiles of the expansion, fracture propagation and rupture of TC4 case initiated by high explosive for the research on complex dynamic response of metal case at high-strain rate. The engineering strain at the moment of surface crack initiation and explosion product leakage is estimated through comparative analysis, and the surface crack mode and the influence of crack initiation on velocity profiles are observed. Furthermore, The fracture property of metal case is confirmed from the fracture morphologies of recovered fragments.

Key words: explosive mechanics, metal case, shear fracture, DPS array, framing

CLC Number:

O38
O346.1

REN Guo-wu, GUO Zhao-liang, TANG Tie-gang, SU Hong-mei, WEN Shang-jie, JIN Shan. Experimental Research on Fracture of Metal Case under Loading at High Strain Rate[J]. Acta Armamentarii, 2016, 37(1): 77-82.

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